A multi-split air conditioner temperature control processing method and device

Abstract

This invention provides a method and apparatus for controlling the temperature reach of a multi-split air conditioner. The method includes: when it is detected that the current ambient temperature of a target indoor unit in the multi-split air conditioner system has not reached a set temperature after a target operating time period, controlling the opening of the electronic expansion valve used to control refrigerant flow in the target indoor unit based on the temperature difference between the current ambient temperature and the set temperature, so that the current ambient temperature corresponding to the target indoor unit reaches the set temperature; when it is detected that the current ambient temperature corresponding to all target indoor units has reached the corresponding set temperature, controlling the outdoor unit of the multi-split air conditioner system to enter a low-frequency operating state to reach the set temperature. The multi-split air conditioner temperature reach control method provided by this invention can effectively improve the accuracy and efficiency of temperature reach control processing in multi-split air conditioners, quickly controlling the multi-split air conditioner to enter a low-frequency operating state to reach the set temperature, thereby saving energy consumption.

Description

Technical Field

[0001] This invention relates to the field of air conditioning equipment technology, and in particular to a method and apparatus for controlling the temperature of a multi-split air conditioner. It also relates to an electronic device, a non-transitory computer-readable storage medium, and a computer program product. Background Technology

[0002] In recent years, with the rapid development of computer technology, multi-split air conditioning systems have become increasingly widely used in people's daily lives. Currently, in the operation of multi-split air conditioning systems, different indoor units are typically installed in different rooms. When the indoor units of a multi-split air conditioning system are set to different temperatures, after most rooms reach the set temperature, at least one room may struggle to reach the desired temperature due to thermal imbalance, or it may take a very long time to do so. This prevents the outdoor unit from entering a low-frequency operating state to reach the set temperature, leading to increased power consumption and energy waste. However, existing multi-split air conditioning temperature control solutions generally have significant limitations and poor control accuracy and effectiveness. Therefore, providing a more efficient multi-split air conditioning temperature control solution has become an urgent problem to be solved. Summary of the Invention

[0003] This invention provides a method for controlling the temperature of a multi-split air conditioner, which solves the problem that existing multi-split air conditioner temperature control solutions are generally limited, resulting in poor control accuracy and effect.

[0004] This invention provides a method for controlling the temperature of a multi-split air conditioner, comprising: If the current ambient temperature in a multi-split air conditioning system does not reach the set temperature after a target indoor unit has been operating for a target period of time, the opening of the electronic expansion valve used to control the refrigerant flow in the target indoor unit is controlled according to the temperature difference between the current ambient temperature and the set temperature, so that the current ambient temperature corresponding to the target indoor unit reaches the set temperature; wherein, the target indoor unit includes at least one indoor unit in the multi-split air conditioning system. When the ambient temperature corresponding to the target indoor unit is detected to have reached the corresponding set temperature, the outdoor unit of the multi-split air conditioning system is controlled to enter the low-frequency operation state at the set temperature.

[0005] According to the multi-split air conditioner temperature control processing method provided by the present invention, when it is detected that the current ambient temperature of a target indoor unit in the multi-split air conditioner system has not reached the set temperature after a target operating time period, the opening degree of the electronic expansion valve used to control the refrigerant flow in the target indoor unit is controlled according to the temperature difference between the current ambient temperature and the set temperature, so that the current ambient temperature corresponding to the target indoor unit reaches the set temperature, specifically including: If the ambient temperature in a multi-split air conditioning system does not reach the set temperature after the target indoor unit has been running for a target period of time, the set temperature of the target indoor unit and the current ambient temperature corresponding to the target indoor unit are obtained; the temperature difference between the set temperature of the target indoor unit and the current ambient temperature corresponding to the target indoor unit is determined. The opening adjustment ratio of the electronic expansion valve is determined based on the temperature difference. The opening degree of the electronic expansion valve used to control the refrigerant flow in the target indoor unit is controlled according to the opening degree adjustment ratio, so that the current ambient temperature corresponding to the target indoor unit reaches the set temperature.

[0006] According to the multi-split air conditioner temperature control processing method provided by the present invention, the step of determining the opening adjustment ratio of the electronic expansion valve based on the temperature difference specifically includes: The system performs a matching search based on the temperature difference value and a preset electronic expansion valve opening adjustment strategy to find the opening adjustment ratio corresponding to the temperature difference value from the electronic expansion valve opening adjustment strategy; wherein, the electronic expansion valve opening adjustment strategy includes the correspondence between each temperature difference value and the opening adjustment ratio of each electronic expansion valve; the magnitude of the temperature difference value and the magnitude of the opening adjustment ratio of the electronic expansion valve are directly proportional.

[0007] According to the multi-split air conditioner temperature control processing method provided by the present invention, before controlling the opening degree of the electronic expansion valve used to control the refrigerant flow in the target indoor unit based on the temperature difference between the current ambient temperature and the set temperature when it is detected that the current ambient temperature of the target indoor unit in the multi-split air conditioner system has not reached the set temperature after the target operating time period, the method further includes: When the multi-split air conditioning system is detected to have started and been running for the target time, the set temperature of each indoor unit in the multi-split air conditioning system and the current ambient temperature corresponding to each indoor unit are obtained. The temperature comparison analysis results are obtained by comparing and analyzing the set temperature of each indoor unit with the current ambient temperature corresponding to each indoor unit. Based on the temperature comparison analysis results, it is determined whether there is a situation in the multi-split air conditioning system where the current ambient temperature after the target indoor unit has been running for the target time period has not reached the set temperature.

[0008] According to the multi-split air conditioner temperature control processing method provided by the present invention, the step of determining whether there is a situation in the multi-split air conditioner system where the current ambient temperature after the target indoor unit has been operating for a target time period has not reached the set temperature based on the temperature comparison analysis results specifically includes: If the temperature comparison analysis result shows that the current ambient temperature corresponding to at least one indoor unit is lower than the corresponding set temperature, it is determined that there is a situation in the multi-split air conditioning system where the current ambient temperature after the target indoor unit has been running for a target time period has not reached the set temperature. If the temperature comparison analysis results show that the current ambient temperature of all indoor units is greater than or equal to the corresponding set temperature, it is determined that there is no situation in the multi-split air conditioning system where the current ambient temperature of the target indoor unit after the target operating time period has not reached the set temperature.

[0009] According to the multi-split air conditioner temperature control processing method provided by the present invention, when it is detected that the current ambient temperature of a target indoor unit in the multi-split air conditioner system has not reached the set temperature after a target operating time period, after controlling the opening degree of the electronic expansion valve used to control the refrigerant flow in the target indoor unit based on the temperature difference between the current ambient temperature and the set temperature, the method further includes: If it is detected that the opening degree of the electronic expansion valve in the target indoor unit has been adjusted to the maximum opening value and the current ambient temperature corresponding to the target indoor unit has not yet reached the set temperature, the operating frequency of the compressor is controlled according to the temperature difference between the current ambient temperature corresponding to the target indoor unit and the set temperature, so that the current ambient temperature corresponding to the target indoor unit reaches the set temperature.

[0010] The present invention also provides a multi-split air conditioner temperature control processing device, comprising: An electronic expansion valve opening control processing unit is used to control the opening of the electronic expansion valve in the target indoor unit, which controls the refrigerant flow, based on the temperature difference between the current ambient temperature and the set temperature, when the current ambient temperature of the target indoor unit in the multi-split air conditioning system is not reached after a target operating time period, so that the current ambient temperature of the target indoor unit reaches the set temperature; wherein, the target indoor unit includes at least one indoor unit in the multi-split air conditioning system; The multi-split air conditioner temperature control processing unit is used to control the outdoor unit of the multi-split air conditioner system to enter the low-frequency operation state of reaching the set temperature when it is detected that the current ambient temperature corresponding to the target indoor unit has reached the corresponding set temperature.

[0011] According to the multi-split air conditioner temperature control processing device provided by the present invention, the electronic expansion valve opening control processing unit is specifically used for: If the ambient temperature in a multi-split air conditioning system does not reach the set temperature after the target indoor unit has been running for a target period of time, the set temperature of the target indoor unit and the current ambient temperature corresponding to the target indoor unit are obtained; the temperature difference between the set temperature of the target indoor unit and the current ambient temperature corresponding to the target indoor unit is determined. The opening adjustment ratio of the electronic expansion valve is determined based on the temperature difference. The opening degree of the electronic expansion valve used to control the refrigerant flow in the target indoor unit is controlled according to the opening degree adjustment ratio, so that the current ambient temperature corresponding to the target indoor unit reaches the set temperature.

[0012] According to the multi-split air conditioner temperature control processing device provided by the present invention, the step of determining the opening adjustment ratio of the electronic expansion valve based on the temperature difference specifically includes: The system performs a matching search based on the temperature difference value and a preset electronic expansion valve opening adjustment strategy to find the opening adjustment ratio corresponding to the temperature difference value from the electronic expansion valve opening adjustment strategy; wherein, the electronic expansion valve opening adjustment strategy includes the correspondence between each temperature difference value and the opening adjustment ratio of each electronic expansion valve; the magnitude of the temperature difference value and the magnitude of the opening adjustment ratio of the electronic expansion valve are directly proportional.

[0013] According to the multi-split air conditioner temperature control processing device provided by the present invention, before controlling the opening degree of the electronic expansion valve used to control the refrigerant flow in the target indoor unit based on the temperature difference between the current ambient temperature and the set temperature when it is detected that the current ambient temperature of the target indoor unit in the multi-split air conditioner system has not reached the set temperature after the target operating time period, the device further includes: The indoor unit temperature judgment unit is used for: When the multi-split air conditioning system is detected to have started and been running for the target time, the set temperature of each indoor unit in the multi-split air conditioning system and the current ambient temperature corresponding to each indoor unit are obtained. The temperature comparison analysis results are obtained by comparing and analyzing the set temperature of each indoor unit with the current ambient temperature corresponding to each indoor unit. Based on the temperature comparison analysis results, it is determined whether there is a situation in the multi-split air conditioning system where the current ambient temperature after the target indoor unit has been running for the target time period has not reached the set temperature.

[0014] According to the multi-split air conditioner temperature control processing device provided by the present invention, the step of determining whether there is a situation in the multi-split air conditioner system where the current ambient temperature after the target indoor unit has been operating for a target time period has not reached the set temperature based on the temperature comparison analysis result specifically includes: If the temperature comparison analysis result shows that the current ambient temperature corresponding to at least one indoor unit is lower than the corresponding set temperature, it is determined that there is a situation in the multi-split air conditioning system where the current ambient temperature after the target indoor unit has been running for a target time period has not reached the set temperature. If the temperature comparison analysis results show that the current ambient temperature of all indoor units is greater than or equal to the corresponding set temperature, it is determined that there is no situation in the multi-split air conditioning system where the current ambient temperature of the target indoor unit after the target operating time period has not reached the set temperature.

[0015] According to the multi-split air conditioner temperature control processing device provided by the present invention, when it is detected that the current ambient temperature in the multi-split air conditioner system has not reached the set temperature after the target indoor unit has been operating for a target time period, after controlling the opening degree of the electronic expansion valve used to control the refrigerant flow in the target indoor unit based on the temperature difference between the current ambient temperature and the set temperature, the device further includes: The compressor frequency control unit is used for: If it is detected that the opening degree of the electronic expansion valve in the target indoor unit has been adjusted to the maximum opening value and the current ambient temperature corresponding to the target indoor unit has not yet reached the set temperature, the operating frequency of the compressor is controlled according to the temperature difference between the current ambient temperature corresponding to the target indoor unit and the set temperature, so that the current ambient temperature corresponding to the target indoor unit reaches the set temperature.

[0016] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the multi-split air conditioner temperature control processing method as described in any of the preceding claims.

[0017] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the multi-split air conditioner temperature control processing method as described in any of the preceding claims.

[0018] The present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the multi-split air conditioner temperature control processing method as described in any of the preceding claims.

[0019] The multi-split air conditioner temperature control processing method provided by this invention, when it is detected that the current ambient temperature of a target indoor unit in the multi-split air conditioner system has not reached the set temperature after a target operating time period, controls the opening of the electronic expansion valve used to control the refrigerant flow in the target indoor unit according to the temperature difference between the current ambient temperature and the set temperature, so that the current ambient temperature corresponding to the target indoor unit reaches the set temperature. When it is detected that the current ambient temperature corresponding to all target indoor units has reached the corresponding set temperature, the outdoor unit of the multi-split air conditioner system is controlled to enter the low-frequency operation state of reaching the set temperature. This method can effectively improve the accuracy and efficiency of the multi-split air conditioner temperature control processing, so as to quickly control the multi-split air conditioner to enter the low-frequency operation state of reaching the set temperature, thereby saving energy consumption. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is one of the flowcharts illustrating the multi-split air conditioner temperature control processing method provided by the present invention.

[0022] Figure 2 This is the second flowchart of the multi-split air conditioner temperature control processing method provided by the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of the multi-split air conditioner temperature control processing device provided by the present invention.

[0024] Figure 4 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0026] The following is combined Figures 1-4 This invention describes the multi-split air conditioner temperature control processing method and apparatus, and provides a detailed description of its embodiments.

[0027] The following is a detailed description of embodiments of the multi-split air conditioning temperature control processing method described in this invention. For example... Figure 1 As shown, this is one of the flowcharts of the multi-split air conditioner temperature control processing method provided by the present invention. The specific implementation process includes the following steps: Step 101: If the current ambient temperature of a target indoor unit in a multi-split air conditioning system does not reach the set temperature after the target operating time period, the opening of the electronic expansion valve used to control the refrigerant flow in the target indoor unit is controlled according to the temperature difference between the current ambient temperature and the set temperature, so that the current ambient temperature corresponding to the target indoor unit reaches the set temperature; wherein, the target indoor unit includes at least one indoor unit in the multi-split air conditioning system.

[0028] In this embodiment of the invention, before performing this step, it is necessary to pre-determine whether there are any target indoor units that have not reached the set temperature after the multi-split air conditioning system has been running for the target time period; that is, whether there are cases where the current ambient temperature of the rooms where some indoor units are located has not reached the set temperature. Specifically, firstly, after detecting that the multi-split air conditioning system has been started and has been running for the target time, the set temperature of each indoor unit in the multi-split air conditioning system and the corresponding current ambient temperature of each indoor unit are obtained. Then, the set temperature of each indoor unit and the corresponding current ambient temperature are compared and analyzed to obtain the temperature comparison analysis result. Furthermore, based on the temperature comparison analysis result, it is determined whether there are cases where the current ambient temperature of the target indoor unit in the multi-split air conditioning system has not reached the set temperature after the target time period has been running. That is, if the temperature comparison analysis result shows that the current ambient temperature corresponding to at least one indoor unit is lower than the corresponding set temperature, it is determined that there is a situation in the multi-split air conditioning system where the current ambient temperature after the target indoor unit has been running for a target period of time has not reached the set temperature; if the temperature comparison analysis result shows that the current ambient temperature corresponding to all indoor units is greater than or equal to the corresponding set temperature, it is determined that there is no situation in the multi-split air conditioning system where the current ambient temperature after the target indoor unit has been running for a target period of time has not reached the set temperature.

[0029] The multi-split air conditioning system includes at least one outdoor unit and at least two indoor units. The indoor units can be pre-installed in different rooms, each corresponding to a different electronic expansion valve. The opening degree of the electronic expansion valve controls the flow rate of refrigerant entering that indoor unit. The opening degree of the electronic expansion valve can be controlled by sending control commands. The set temperature can be a desired temperature value input by the user through the operation panel or air conditioning control terminal, such as 30℃, 26℃, etc., without specific limitations. The current ambient temperature is the current ambient temperature of the room where the indoor unit is located, which can be obtained through a preset temperature sensor in the room or in the indoor unit. The target time period can be input through background configuration, such as 30 minutes, 2 hours, or 1 hour, without specific limitations.

[0030] In the specific implementation of this step, if it is detected that the current ambient temperature of the target indoor unit in the multi-split air conditioning system has not reached the set temperature after the target operating time period, the set temperature of the target indoor unit and the corresponding current ambient temperature can be obtained through the input parameter acquisition module and the preset temperature sensor, respectively. Furthermore, the temperature difference between the set temperature and the corresponding current ambient temperature of the target indoor unit is calculated based on these two values. Further, the opening adjustment ratio of the electronic expansion valve is determined based on the temperature difference, and the opening of the electronic expansion valve used to control the refrigerant flow in the target indoor unit is controlled according to the opening adjustment ratio, so that the current ambient temperature of the target indoor unit reaches the set temperature.

[0031] In determining the opening adjustment ratio of the electronic expansion valve based on the temperature difference, the temperature difference can be used as an index to match and search a preset electronic expansion valve opening adjustment strategy. This allows for finding the opening adjustment ratio (e.g., 10%, 20%, or 30%) corresponding to the temperature difference within the electronic expansion valve opening adjustment strategy. The electronic expansion valve opening adjustment strategy includes the correspondence between each temperature difference and each electronic expansion valve opening adjustment ratio. This correspondence can be stored in a database in the form of a mapping table. The magnitude of the temperature difference and the magnitude of the electronic expansion valve opening adjustment ratio are directly proportional. For example, if the temperature difference is 5°C, the corresponding electronic expansion valve opening adjustment ratio can be 30%; if the temperature difference is 3°C, the corresponding electronic expansion valve opening adjustment ratio can be 20%; if the temperature difference is 2°C, the corresponding electronic expansion valve opening adjustment ratio can be 10%. Of course, no specific limitation is made here.

[0032] Step 102: When it is detected that the current ambient temperature corresponding to the target indoor unit has reached the corresponding set temperature, control the outdoor unit of the multi-split air conditioning system to enter the low-frequency operation state at the set temperature.

[0033] Specifically, when the sensor detects that the current ambient temperature corresponding to the target indoor unit has reached the corresponding set temperature, the compressor of the outdoor unit in the multi-split air conditioning system can be controlled to quickly and timely enter the low-frequency operation state to reach the set temperature. This avoids the problem that the room may not be able to reach the set temperature due to the cold and heat balance, or it may take a long time to reach the set temperature. This would prevent the outdoor unit from entering the low-frequency operation state to reach the set temperature, thus increasing the power consumption of the multi-split air conditioning system and wasting energy. This achieves a better energy-saving effect.

[0034] Furthermore, when it is detected that the current ambient temperature in the multi-split air conditioning system has not reached the set temperature after the target indoor unit has been operating for the target time period, after controlling the opening of the electronic expansion valve used to control the refrigerant flow in the target indoor unit based on the temperature difference between the current ambient temperature and the set temperature, the present invention can also control the compressor operating frequency based on the temperature difference between the current ambient temperature of the target indoor unit and the set temperature when it is detected that the opening of the electronic expansion valve in the target indoor unit has been adjusted to the maximum opening value and the current ambient temperature corresponding to the target indoor unit has not yet reached the set temperature, so as to make the current ambient temperature corresponding to the target indoor unit reach the set temperature. The operating frequency and the temperature difference can be inversely proportional. For example, if the temperature difference is 5°C, the corresponding operating frequency can be increased by 5 Hz or 5 revolutions per second; if the temperature difference is 3°C or 3 revolutions per second, the corresponding operating frequency can be increased by 3 Hz; if the temperature difference is 2°C or 2 revolutions per second, the corresponding operating frequency can be increased by 2 Hz; of course, no specific limitation is made here.

[0035] like Figure 2 As shown, the system first controls the multi-split air conditioning system to start and run. After detecting that some rooms have reached the target temperature within a certain time period, if there are still other rooms that have not reached the temperature, the compressor can be controlled to increase its operating frequency, and the electronic expansion valve of the indoor unit of the other rooms that have not reached the temperature can be controlled to increase its opening. Furthermore, if it is detected that the other rooms have reached the temperature, the compressor is controlled to return to low-frequency operation.

[0036] The multi-split air conditioner temperature control processing method provided by this invention, when it is detected that the current ambient temperature of a target indoor unit in the multi-split air conditioner system has not reached the set temperature after a target operating time period, controls the opening of the electronic expansion valve used to control the refrigerant flow in the target indoor unit according to the temperature difference between the current ambient temperature and the set temperature, so that the current ambient temperature corresponding to the target indoor unit reaches the set temperature. When it is detected that the current ambient temperature corresponding to all target indoor units has reached the corresponding set temperature, the outdoor unit of the multi-split air conditioner system is controlled to enter the low-frequency operation state of reaching the set temperature. This method can effectively improve the accuracy and efficiency of the multi-split air conditioner temperature control processing, so as to quickly control the multi-split air conditioner to enter the low-frequency operation state of reaching the set temperature, thereby saving energy consumption.

[0037] The following describes the multi-split air conditioner temperature control processing device provided by the present invention. The multi-split air conditioner temperature control processing device described below can be referred to in correspondence with the multi-split air conditioner temperature control processing method described above. References Figure 3 The diagram shown is a structural schematic of the multi-split air conditioner temperature control processing device provided by the present invention. The multi-split air conditioner temperature control processing device of the present invention specifically includes the following parts: The electronic expansion valve opening control processing unit 301 is used to control the opening of the electronic expansion valve in the target indoor unit for controlling the refrigerant flow based on the temperature difference between the current ambient temperature and the set temperature when the current ambient temperature of the target indoor unit in the multi-split air conditioning system does not reach the set temperature after the target operating time period is detected, so that the current ambient temperature corresponding to the target indoor unit reaches the set temperature; wherein, the target indoor unit includes at least one indoor unit in the multi-split air conditioning system.

[0038] The multi-split air conditioner temperature control processing unit 302 is used to control the outdoor unit in the multi-split air conditioner system to enter the low-frequency operation state of reaching the temperature when it is detected that the current ambient temperature corresponding to the target indoor unit has reached the corresponding set temperature.

[0039] According to the multi-split air conditioner temperature control processing device provided by the present invention, the electronic expansion valve opening control processing unit is specifically used for: If the ambient temperature in a multi-split air conditioning system does not reach the set temperature after the target indoor unit has been running for a target period of time, the set temperature of the target indoor unit and the current ambient temperature corresponding to the target indoor unit are obtained; the temperature difference between the set temperature of the target indoor unit and the current ambient temperature corresponding to the target indoor unit is determined. The opening adjustment ratio of the electronic expansion valve is determined based on the temperature difference. The opening degree of the electronic expansion valve used to control the refrigerant flow in the target indoor unit is controlled according to the opening degree adjustment ratio, so that the current ambient temperature corresponding to the target indoor unit reaches the set temperature.

[0040] According to the multi-split air conditioner temperature control processing device provided by the present invention, the step of determining the opening adjustment ratio of the electronic expansion valve based on the temperature difference specifically includes: The system performs a matching search based on the temperature difference value and a preset electronic expansion valve opening adjustment strategy to find the opening adjustment ratio corresponding to the temperature difference value from the electronic expansion valve opening adjustment strategy; wherein, the electronic expansion valve opening adjustment strategy includes the correspondence between each temperature difference value and the opening adjustment ratio of each electronic expansion valve; the magnitude of the temperature difference value and the magnitude of the opening adjustment ratio of the electronic expansion valve are directly proportional.

[0041] According to the multi-split air conditioner temperature control processing device provided by the present invention, before controlling the opening degree of the electronic expansion valve used to control the refrigerant flow in the target indoor unit based on the temperature difference between the current ambient temperature and the set temperature when it is detected that the current ambient temperature of the target indoor unit in the multi-split air conditioner system has not reached the set temperature after the target operating time period, the device further includes: The indoor unit temperature judgment unit is used for: When the multi-split air conditioning system is detected to have started and been running for the target time, the set temperature of each indoor unit in the multi-split air conditioning system and the current ambient temperature corresponding to each indoor unit are obtained. The temperature comparison analysis results are obtained by comparing and analyzing the set temperature of each indoor unit with the current ambient temperature corresponding to each indoor unit. Based on the temperature comparison analysis results, it is determined whether there is a situation in the multi-split air conditioning system where the current ambient temperature after the target indoor unit has been running for the target time period has not reached the set temperature.

[0042] According to the multi-split air conditioner temperature control processing device provided by the present invention, the step of determining whether there is a situation in the multi-split air conditioner system where the current ambient temperature after the target indoor unit has been operating for a target time period has not reached the set temperature based on the temperature comparison analysis result specifically includes: If the temperature comparison analysis result shows that the current ambient temperature corresponding to at least one indoor unit is lower than the corresponding set temperature, it is determined that there is a situation in the multi-split air conditioning system where the current ambient temperature after the target indoor unit has been running for a target time period has not reached the set temperature. If the temperature comparison analysis results show that the current ambient temperature of all indoor units is greater than or equal to the corresponding set temperature, it is determined that there is no situation in the multi-split air conditioning system where the current ambient temperature of the target indoor unit after the target operating time period has not reached the set temperature.

[0043] According to the multi-split air conditioner temperature control processing device provided by the present invention, when it is detected that the current ambient temperature in the multi-split air conditioner system has not reached the set temperature after the target indoor unit has been operating for a target time period, after controlling the opening degree of the electronic expansion valve used to control the refrigerant flow in the target indoor unit based on the temperature difference between the current ambient temperature and the set temperature, the device further includes: The compressor frequency control unit is used for: If it is detected that the opening degree of the electronic expansion valve in the target indoor unit has been adjusted to the maximum opening value and the current ambient temperature corresponding to the target indoor unit has not yet reached the set temperature, the operating frequency of the compressor is controlled according to the temperature difference between the current ambient temperature corresponding to the target indoor unit and the set temperature, so that the current ambient temperature corresponding to the target indoor unit reaches the set temperature.

[0044] The multi-split air conditioner temperature control processing device provided by this invention, when it is detected that the current ambient temperature of a target indoor unit in the multi-split air conditioner system has not reached the set temperature after a target operating time period, controls the opening of the electronic expansion valve used to control the refrigerant flow in the target indoor unit according to the temperature difference between the current ambient temperature and the set temperature, so that the current ambient temperature corresponding to the target indoor unit reaches the set temperature. When it is detected that the current ambient temperature corresponding to all target indoor units has reached the corresponding set temperature, the outdoor unit of the multi-split air conditioner system is controlled to enter the low-frequency operation state of reaching the set temperature. This can effectively improve the accuracy and efficiency of the temperature control processing of multi-split air conditioners, so as to quickly control the multi-split air conditioner to enter the low-frequency operation state of reaching the set temperature, thereby saving energy consumption.

[0045] Figure 4 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 4As shown, the electronic device (i.e., the external refrigerant detector) may include: a processor 401, a communication interface 404, a memory 402, and a communication bus 403. The processor 401, communication interface 404, and memory 402 communicate with each other via the communication bus 403. The processor 401 can call logical instructions in the memory 402 to execute a multi-split air conditioning temperature control processing method. This method includes: when it is detected that the current ambient temperature of a target indoor unit in the multi-split air conditioning system has not reached the set temperature after a target operating time period, controlling the opening of the electronic expansion valve used to control the refrigerant flow in the target indoor unit according to the temperature difference between the current ambient temperature and the set temperature, so that the current ambient temperature corresponding to the target indoor unit reaches the set temperature; wherein the target indoor unit includes at least one indoor unit in the multi-split air conditioning system; when it is detected that the current ambient temperature corresponding to all target indoor units has reached the corresponding set temperature, controlling the outdoor unit in the multi-split air conditioning system to enter a low-frequency operation state to reach the set temperature.

[0046] Furthermore, the logical instructions in the aforementioned memory 402 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0047] On the other hand, this application also provides a computer program product, which includes a computer program that can be stored on a computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the multi-split air conditioner temperature control processing method provided by the above methods. The method includes: when it is detected that the current ambient temperature of a target indoor unit in the multi-split air conditioner system has not reached the set temperature after a target operating time period, controlling the opening of the electronic expansion valve used to control the refrigerant flow in the target indoor unit according to the temperature difference between the current ambient temperature and the set temperature, so that the current ambient temperature corresponding to the target indoor unit reaches the set temperature; wherein, the target indoor unit includes at least one indoor unit in the multi-split air conditioner system; when it is detected that the current ambient temperature corresponding to the target indoor unit has reached the corresponding set temperature, controlling the outdoor unit in the multi-split air conditioner system to enter the temperature-reaching low-frequency operation state.

[0048] In another aspect, this application also provides a computer-readable storage medium, the computer-readable storage medium including a stored program, wherein the program, when running, executes the multi-split air conditioner temperature control processing method provided by the above methods, the method comprising: when it is detected that the current ambient temperature of a target indoor unit in the multi-split air conditioner system has not reached the set temperature after a target operating time period, controlling the opening of the electronic expansion valve used to control the refrigerant flow in the target indoor unit according to the temperature difference between the current ambient temperature and the set temperature, so that the current ambient temperature corresponding to the target indoor unit reaches the set temperature; wherein the target indoor unit includes at least one indoor unit in the multi-split air conditioner system; when it is detected that the current ambient temperature corresponding to the target indoor unit has reached the corresponding set temperature, controlling the outdoor unit in the multi-split air conditioner system to enter the temperature-reaching low-frequency operation state.

[0049] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0050] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method for controlling the temperature of a multi-split air conditioner, characterized in that, include: If the current ambient temperature in a multi-split air conditioning system does not reach the set temperature after a target indoor unit has been operating for a target period of time, the opening of the electronic expansion valve used to control the refrigerant flow in the target indoor unit is controlled according to the temperature difference between the current ambient temperature and the set temperature, so that the current ambient temperature corresponding to the target indoor unit reaches the set temperature; wherein, the target indoor unit includes at least one indoor unit in the multi-split air conditioning system. When the ambient temperature corresponding to the target indoor unit is detected to have reached the corresponding set temperature, the outdoor unit of the multi-split air conditioning system is controlled to enter the low-frequency operation state at the set temperature.

2. The multi-split air conditioning temperature control processing method according to claim 1, characterized in that, When it is detected that the current ambient temperature in the multi-split air conditioning system has not reached the set temperature after the target indoor unit has been operating for a target time period, the opening of the electronic expansion valve used to control the refrigerant flow in the target indoor unit is controlled according to the temperature difference between the current ambient temperature and the set temperature, so that the current ambient temperature corresponding to the target indoor unit reaches the set temperature. Specifically, this includes: If the ambient temperature in a multi-split air conditioning system does not reach the set temperature after the target indoor unit has been running for a target period of time, the set temperature of the target indoor unit and the current ambient temperature corresponding to the target indoor unit are obtained; the temperature difference between the set temperature of the target indoor unit and the current ambient temperature corresponding to the target indoor unit is determined. The opening adjustment ratio of the electronic expansion valve is determined based on the temperature difference. The opening degree of the electronic expansion valve used to control the refrigerant flow in the target indoor unit is controlled according to the opening degree adjustment ratio, so that the current ambient temperature corresponding to the target indoor unit reaches the set temperature.

3. The multi-split air conditioning temperature control processing method according to claim 2, characterized in that, The step of determining the opening adjustment ratio of the electronic expansion valve based on the temperature difference specifically includes: The system performs a matching search based on the temperature difference value and a preset electronic expansion valve opening adjustment strategy to find the opening adjustment ratio corresponding to the temperature difference value from the electronic expansion valve opening adjustment strategy; wherein, the electronic expansion valve opening adjustment strategy includes the correspondence between each temperature difference value and the opening adjustment ratio of each electronic expansion valve; the magnitude of the temperature difference value and the magnitude of the opening adjustment ratio of the electronic expansion valve are directly proportional.

4. The multi-split air conditioning temperature control processing method according to claim 1, characterized in that, Before controlling the opening of the electronic expansion valve used to control refrigerant flow in the target indoor unit based on the temperature difference between the current ambient temperature and the set temperature when the current ambient temperature does not reach the set temperature after the target indoor unit has been operating for a target time period in the multi-split air conditioning system, the method further includes: When the multi-split air conditioning system is detected to have started and been running for the target time, the set temperature of each indoor unit in the multi-split air conditioning system and the current ambient temperature corresponding to each indoor unit are obtained. The temperature comparison analysis results are obtained by comparing and analyzing the set temperature of each indoor unit with the current ambient temperature corresponding to each indoor unit. Based on the temperature comparison analysis results, it is determined whether there is a situation in the multi-split air conditioning system where the current ambient temperature after the target indoor unit has been running for the target time period has not reached the set temperature.

5. The multi-split air conditioning temperature control processing method according to claim 4, characterized in that, The step of determining whether there is a situation in the multi-split air conditioning system where the current ambient temperature after the target indoor unit has been operating for the target time period has not reached the set temperature, based on the temperature comparison analysis results, specifically includes: If the temperature comparison analysis result shows that the current ambient temperature corresponding to at least one indoor unit is lower than the corresponding set temperature, it is determined that there is a situation in the multi-split air conditioning system where the current ambient temperature after the target indoor unit has been running for a target time period has not reached the set temperature. If the temperature comparison analysis results show that the current ambient temperature of all indoor units is greater than or equal to the corresponding set temperature, it is determined that there is no situation in the multi-split air conditioning system where the current ambient temperature of the target indoor unit after the target operating time period has not reached the set temperature.

6. The multi-split air conditioning temperature control processing method according to claim 1, characterized in that, If, in a multi-split air conditioning system, the current ambient temperature after the target indoor unit has been operating for a target time period is detected, the system controls the opening of the electronic expansion valve used to control refrigerant flow in the target indoor unit based on the temperature difference between the current ambient temperature and the set temperature. The system further includes: if, in a multi-split air conditioning system, the opening of the electronic expansion valve in the target indoor unit has been adjusted to its maximum value and the current ambient temperature corresponding to the target indoor unit has not yet reached the set temperature, the system controls the operating frequency of the compressor based on the temperature difference between the current ambient temperature corresponding to the target indoor unit and the set temperature, so that the current ambient temperature corresponding to the target indoor unit reaches the set temperature.

7. A multi-split air conditioning temperature control and processing device, characterized in that, include: An electronic expansion valve opening control processing unit is used to control the opening of the electronic expansion valve in the target indoor unit, which controls the refrigerant flow, based on the temperature difference between the current ambient temperature and the set temperature, when the current ambient temperature of the target indoor unit in the multi-split air conditioning system is not reached after a target operating time period, so that the current ambient temperature of the target indoor unit reaches the set temperature; wherein, the target indoor unit includes at least one indoor unit in the multi-split air conditioning system; The multi-split air conditioner temperature control processing unit is used to control the outdoor unit of the multi-split air conditioner system to enter the low-frequency operation state of reaching the set temperature when it is detected that the current ambient temperature corresponding to the target indoor unit has reached the corresponding set temperature.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, When the processor executes the program, it implements the steps of the multi-split air conditioner temperature control processing method as described in any one of claims 1 to 6.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the multi-split air conditioning temperature control processing method as described in any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the multi-split air conditioning temperature control processing method as described in any one of claims 1 to 6.

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