Control method and device of throttling device, storage medium and air conditioner

Abstract

The application provides a control method and device of a throttling device of an air conditioner, a storage medium and the air conditioner. The method comprises the following steps: determining an initial opening degree of a throttling device of the air conditioner after the air conditioner is started, and controlling the air conditioner to run for a second preset time length based on the determined initial opening degree of the throttling device; and adjusting the opening degree of the throttling device according to an outlet air temperature and a target exhaust temperature of the air conditioner after the air conditioner is controlled to run for the second preset time length based on the determined initial opening degree of the throttling device. The scheme provided by the application can select a suitable opening degree, guarantee the stability of the system, reduce the number of temperature sensors, and effectively reduce the cost.

Description

Technical Field

[0001] This invention relates to the field of control, and more particularly to a control method, apparatus, storage medium, and air conditioner for a throttling device. Background Technology

[0002] Existing inverter air conditioners typically use electronic expansion valves as throttling devices. Compared to capillary tubes, electronic expansion valves offer a wider adjustment range, faster and more sensitive operation, higher adjustment accuracy, and greater stability and reliability. They can adjust the refrigerant mass flow rate according to operating conditions and changes in compressor gas output to adapt to load variations and improve the coefficient of performance (COP). Most related technologies rely on superheat and suction or discharge temperatures for refrigerant flow regulation and control. This requires multiple temperature sensors to collect data, and during air conditioner unit startup, shutdown, and defrosting, the electronic expansion valve opening fluctuates significantly and operates frequently. This affects the lifespan of the electronic expansion valve, leads to unstable air conditioning system operation, large fluctuations in air conditioning load, and even unit malfunction. Summary of the Invention

[0003] The main objective of this invention is to overcome the deficiencies of the aforementioned related technologies and provide a control method, device, storage medium, and air conditioner for a throttling device, thereby solving the problem of inconsistent opening of the throttling device caused by using a single intake superheat or exhaust temperature control in the related technologies.

[0004] The present invention provides a method for controlling a throttling device of an air conditioner, comprising: after the air conditioner is started, determining the initial opening degree of the throttling device of the air conditioner, and controlling the air conditioner to run for a second preset time based on the determined initial opening degree of the throttling device; after controlling the air conditioner to run for the second preset time based on the determined initial opening degree of the throttling device, adjusting the opening degree of the throttling device according to the air outlet temperature and the target exhaust temperature of the air conditioner.

[0005] Optionally, the method further includes: when the air conditioner is started, controlling the throttling device to open according to a preset start-up opening degree, and controlling the air conditioner to run for a first preset duration based on the start-up opening degree of the throttling device; after controlling the air conditioner to run for the first preset duration based on the start-up opening degree of the throttling device, determining the initial opening degree of the throttling device of the air conditioner, and controlling the air conditioner to run for a second preset duration based on the initial opening degree of the throttling device.

[0006] Optionally, determining the initial opening degree of the throttling device of the air conditioner includes: determining the initial opening degree of the throttling device based on the indoor ambient temperature, the outdoor ambient temperature, the compressor frequency of the air conditioner, and the set temperature of the air conditioner; and / or, adjusting the opening degree of the throttling device based on the air outlet temperature and the target exhaust temperature of the air conditioner includes: determining the operating opening degree after adjusting the opening degree of the throttling device based on a second temperature difference between the air outlet temperature and the set temperature of the air conditioner and the initial opening degree; and adjusting the determined operating opening degree of the throttling device based on the current exhaust temperature and the target exhaust temperature of the air conditioner.

[0007] Optionally, determining the initial opening degree of the throttling device based on the indoor ambient temperature, outdoor ambient temperature, compressor frequency of the air conditioner, and set temperature of the air conditioner includes: calculating a basic value for the initial opening degree of the throttling device based on the indoor ambient temperature, outdoor ambient temperature, and compressor frequency of the air conditioner; correcting the basic value for the initial opening degree based on a first temperature difference between the set temperature of the air conditioner and the indoor ambient temperature to obtain the initial opening degree of the throttling device; and / or, determining the operating opening degree after adjusting the opening degree of the throttling device based on a second temperature difference between the air outlet temperature of the air conditioner and the set temperature of the air conditioner and the initial opening degree, including: when the current operating mode of the air conditioner is cooling mode or dehumidification mode, if the... If the second temperature difference is greater than or equal to the first preset temperature threshold and less than or equal to the second preset temperature threshold, the throttling device maintains the initial opening unchanged; if the second temperature difference is greater than the second preset temperature threshold, the operating opening of the throttling device is equal to the initial opening plus the product of the first preset correction parameter and the second temperature difference; if the second temperature difference is less than the first preset temperature threshold, the operating opening of the throttling device is equal to the initial opening minus the product of the first preset correction parameter and the second temperature difference; when the current operating mode of the air conditioner is heating mode, if the second temperature difference is greater than or equal to the first preset temperature threshold and less than or equal to the second preset temperature threshold, the throttling device maintains the initial opening unchanged. If the second temperature difference is greater than the second preset temperature threshold, the operating opening of the throttling device is equal to the initial opening minus the product of the second preset correction parameter and the second temperature difference; if the second temperature difference is less than the first preset temperature threshold, the operating opening of the throttling device is equal to the initial opening plus the product of the second preset correction parameter and the second temperature difference; wherein, the first preset temperature threshold is less than the second preset temperature threshold; and / or, adjusting the determined operating opening of the throttling device according to the current exhaust temperature and the target exhaust temperature of the air conditioner, including: if the current exhaust temperature of the air conditioner is greater than or equal to the target exhaust temperature, and less than the sum of the target exhaust temperature and the first preset temperature value, then... The operating opening of the throttling device is increased by a first preset opening value; if the current exhaust temperature of the air conditioner is greater than or equal to the sum of the target exhaust temperature and the first preset temperature value, and less than the sum of the target exhaust temperature and the second preset temperature value, then the operating opening of the throttling device is increased by a second preset opening value; if the current exhaust temperature of the air conditioner is greater than or equal to the sum of the target exhaust temperature and the second preset temperature value, and less than the sum of the target exhaust temperature and the third preset temperature value, then the operating opening of the throttling device is increased by a third preset opening value; if the current exhaust temperature of the air conditioner is greater than or equal to the sum of the target exhaust temperature and the third preset temperature value, then the operating opening of the throttling device is increased to the maximum opening value of the throttling device.Wherein, the first preset temperature value is less than the second preset temperature value; the second preset temperature value is less than the third preset temperature value.

[0008] Optionally, the initial opening base value of the throttling device is calculated based on the indoor ambient temperature, the outdoor ambient temperature, and the compressor frequency of the air conditioner. This includes calculating the initial opening base value P1 of the throttling device using the following formula: P1 = a * F 压缩机频率 +b*T 室内环境温度 +c*T 室外环境温度 +d

[0009] Among them, F 压缩机频率 T is the compressor frequency. 室内环境温度 Indoor ambient temperature, T 室外环境温度 Let be the outdoor ambient temperature, and a, b, c, and d be the fitting parameters;

[0010] And / or, based on a first temperature difference between the set temperature of the air conditioner and the indoor ambient temperature, the initial opening value is corrected to obtain the initial opening of the throttling device, including: determining the temperature range in which the first temperature difference lies among two or more preset temperature ranges, wherein each of the two or more preset temperature ranges corresponds to an opening value, and the opening value corresponding to each temperature range is the same or different in cooling or dehumidifying mode and in heating mode; determining the opening value corresponding to the temperature range in which the first temperature difference lies among the two or more preset temperature ranges as the opening value for the throttling device. An opening correction value is obtained by correcting the initial opening base value. Based on the current operating mode of the air conditioner and the determined opening correction value, the initial opening base value is corrected to obtain the initial opening of the throttling device. Specifically, when the current operating mode of the air conditioner is cooling mode or dehumidification mode, the initial opening of the throttling device is the initial opening base value plus the opening correction value; when the current operating mode of the air conditioner is heating mode, the initial opening of the throttling device is the initial opening base value minus the opening correction value.

[0011] Optionally, the method further includes: when the current operating mode of the air conditioner is heating mode, after controlling the air conditioner to operate based on the initial opening degree of the throttling device, when the air conditioner performs a defrost operation, adjusting the opening degree of the throttling device according to the degree of frost on the outdoor heat exchanger, wherein: the degree of frost on the outdoor heat exchanger is determined to be thin frost, medium frost, or heavy frost based on the outdoor ambient temperature and outdoor ambient relative humidity; when the degree of frost on the outdoor heat exchanger is thin frost, controlling the opening degree of the throttling device to increase to a first set ratio of the maximum opening degree; when the degree of frost on the outdoor heat exchanger is medium frost, controlling the opening degree of the throttling device to increase to a second set ratio of the maximum opening degree; when the degree of frost on the outdoor heat exchanger is heavy frost, controlling the opening degree of the throttling device to increase to a third set ratio of the maximum opening degree; wherein the first set ratio is less than the second set ratio, and the second set ratio is less than the third set ratio; after the air conditioner defrost operation is completed, adjusting the operating opening degree of the throttling device according to the current exhaust temperature and the target exhaust temperature of the air conditioner.

[0012] In another aspect, the present invention provides a control device for a throttling device of an air conditioner, comprising: a determining unit, configured to determine an initial opening degree of the throttling device after the air conditioner is started; a controlling unit, configured to control the air conditioner to operate for a second preset duration based on the initial opening degree of the throttling device determined by the determining unit; and an adjusting unit, configured to adjust the opening degree of the throttling device according to the air outlet temperature and the target exhaust temperature of the air conditioner after the controlling unit controls the air conditioner to operate for the second preset duration based on the initial opening degree of the throttling device determined by the determining unit.

[0013] Optionally, it further includes: the control unit, which is further configured to: control the throttling device to open according to a preset opening degree when the air conditioner is started, and control the air conditioner to run for a first preset duration based on the opening degree of the throttling device; the determining unit, after the control unit controls the air conditioner to run for the first preset duration based on the opening degree of the throttling device, determines the initial opening degree of the throttling device.

[0014] Optionally, the determining unit determines the initial opening degree of the throttling device of the air conditioner, including: determining the initial opening degree of the throttling device based on the indoor ambient temperature, the outdoor ambient temperature, the compressor frequency of the air conditioner, and the set temperature of the air conditioner; and / or, the adjusting unit includes: a determining subunit, used to determine the operating opening degree after adjusting the opening degree of the throttling device based on a second temperature difference between the air outlet temperature of the air conditioner and the set temperature of the air conditioner and the initial opening degree; and an adjusting subunit, used to adjust the determined operating opening degree of the throttling device based on the current exhaust temperature and the target exhaust temperature of the air conditioner.

[0015] Optionally, the determining unit includes: a calculation subunit, configured to calculate an initial opening base value of the throttling device based on the indoor ambient temperature, the outdoor ambient temperature, and the compressor frequency of the air conditioner; a correction subunit, configured to correct the initial opening base value based on a first temperature difference between the set temperature of the air conditioner and the indoor ambient temperature to obtain the initial opening of the throttling device; and / or, the determining subunit, configured to determine the operating opening after adjusting the opening of the throttling device based on a second temperature difference between the air outlet temperature of the air conditioner and the set temperature of the air conditioner and the initial opening, including: when the current operating mode of the air conditioner is cooling mode or dehumidification mode, if the second temperature difference is greater than or equal to a first preset temperature... If the second temperature difference is greater than or equal to the second preset temperature threshold, the throttling device maintains its initial opening. If the second temperature difference is greater than the second preset temperature threshold, the operating opening of the throttling device is equal to the initial opening plus the product of the first preset correction parameter and the second temperature difference. If the second temperature difference is less than the first preset temperature threshold, the operating opening of the throttling device is equal to the initial opening minus the product of the first preset correction parameter and the second temperature difference. When the current operating mode of the air conditioner is heating mode, if the second temperature difference is greater than or equal to the first preset temperature threshold and less than or equal to the second preset temperature threshold, the throttling device maintains its initial opening. If the second temperature difference is greater than the second preset temperature threshold, the operating opening of the throttling device is equal to the initial opening minus the product of the first preset correction parameter and the second temperature difference. If a temperature threshold is set, the operating opening of the throttling device is equal to the initial opening minus the product of the second preset correction parameter and the second temperature difference; if the second temperature difference is less than the first preset temperature threshold, the operating opening of the throttling device is equal to the initial opening plus the product of the second preset correction parameter and the second temperature difference; wherein, the first preset temperature threshold is less than the second preset temperature threshold; and / or, the adjustment subunit adjusts the determined operating opening of the throttling device according to the current exhaust temperature and the target exhaust temperature of the air conditioner, including: if the current exhaust temperature of the air conditioner is greater than or equal to the target exhaust temperature, and less than the sum of the target exhaust temperature and the first preset temperature value, then the throttling device is adjusted. The operating opening of the throttling device is increased by a first preset opening value; if the current exhaust temperature of the air conditioner is greater than or equal to the sum of the target exhaust temperature and the first preset temperature value, and less than the sum of the target exhaust temperature and the second preset temperature value, then the operating opening of the throttling device is increased by a second preset opening value; if the current exhaust temperature of the air conditioner is greater than or equal to the sum of the target exhaust temperature and the second preset temperature value, and less than the sum of the target exhaust temperature and the third preset temperature value, then the operating opening of the throttling device is increased by a third preset opening value; if the current exhaust temperature of the air conditioner is greater than or equal to the sum of the target exhaust temperature and the third preset temperature value, then the operating opening value of the throttling device is increased to the maximum opening value of the throttling device.Wherein, the first preset temperature value is less than the second preset temperature value; the second preset temperature value is less than the third preset temperature value.

[0016] Optionally, the calculation subunit calculates the initial opening base value of the throttling device based on the indoor ambient temperature, the outdoor ambient temperature, and the compressor frequency of the air conditioner, including: calculating the initial opening base value P1 of the throttling device using the following formula based on the indoor ambient temperature, the outdoor ambient temperature, and the compressor frequency of the air conditioner:

[0017] P1=a*F 压缩机频率 +b*T 室内环境温度 +c*T 室外环境温度 +d

[0018] Among them, F 压缩机频率 T is the compressor frequency. 室内环境温度 Indoor ambient temperature, T 室外环境温度 Let be the outdoor ambient temperature, and a, b, c, and d be the fitting parameters;

[0019] And / or, the correction subunit corrects the initial opening base value based on the first temperature difference between the set temperature of the air conditioner and the indoor ambient temperature to obtain the initial opening of the throttling device, including: determining the temperature range in which the first temperature difference lies among two or more preset temperature ranges, wherein each of the two or more preset temperature ranges corresponds to an opening value, and the opening value corresponding to each temperature range is the same or different in cooling or dehumidification mode and in heating mode; determining the opening value corresponding to the temperature range in which the first temperature difference lies among the two or more preset temperature ranges. The initial opening correction value is used to correct the initial opening base value. Based on the current operating mode of the air conditioner and the determined opening correction value, the initial opening base value is corrected to obtain the initial opening of the throttling device. Specifically, when the current operating mode of the air conditioner is cooling mode or dehumidification mode, the initial opening of the throttling device is the initial opening base value plus the opening correction value; when the current operating mode of the air conditioner is heating mode, the initial opening of the throttling device is the initial opening base value minus the opening correction value.

[0020] Optionally, it further includes: a defrosting opening adjustment unit, used to adjust the opening of the throttling device according to the degree of frost on the outdoor heat exchanger when the air conditioner is currently operating in heating mode, after the control unit controls the air conditioner to operate based on the initial opening of the throttling device, and the air conditioner performs a defrosting operation, wherein: the degree of frost on the outdoor heat exchanger is determined to be thin frost, medium frost, or heavy frost based on the outdoor ambient temperature and outdoor ambient relative humidity; when the degree of frost on the outdoor heat exchanger is thin frost, the opening of the throttling device is controlled to increase to a first setting of the maximum opening. A set ratio is specified; when the outdoor heat exchanger is in the medium frost stage, the opening of the throttling device is controlled to increase to the maximum opening by a second set ratio; when the outdoor heat exchanger is in the heavy frost stage, the opening of the throttling device is controlled to increase to the maximum opening by a third set ratio; wherein, the first set ratio is less than the second set ratio, and the second set ratio is less than the third set ratio; the adjusting unit is further configured to: after the air conditioner defrost operation is completed, adjust the operating opening of the throttling device according to the current exhaust temperature and the target exhaust temperature of the air conditioner.

[0021] In another aspect, the present invention provides a storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the methods described above.

[0022] In another aspect, the present invention provides an air conditioner, including a processor, a memory, and a computer program stored in the memory that can run on the processor, wherein the processor executes the program to implement the steps of any of the methods described above.

[0023] In another aspect, the present invention provides an air conditioner, including a control device for any of the aforementioned throttling devices.

[0024] According to the technical solution of the present invention, after the air conditioner operates for a certain period of time based on the initial opening of the throttling device, the air conditioner enters the operation opening adjustment stage of the throttling device. The opening of the throttling device is controlled by the outlet air temperature and the target exhaust temperature. There is no need to calculate the superheat, and there is no need to collect the evaporator inlet and outlet temperatures and the suction temperature. This can reduce the number of temperature sensors used and effectively reduce costs.

[0025] According to the technical solution of the present invention, the operating opening value of the throttling device is calculated based on the temperature difference between the outlet air temperature and the air conditioner set temperature, and then the adjustment is made based on the difference between the actual exhaust temperature and the target exhaust temperature. This allows for the selection of a suitable opening value while ensuring the stability of the system.

[0026] According to the technical solution of the present invention, the opening degree of the throttling device is controlled during defrosting, thereby increasing the defrosting rate, reducing the defrosting time, and reducing the impact of defrosting on the indoor ambient temperature.

[0027] According to the technical solution of the present invention, when the air conditioner is turned on, a starting opening degree is first given, and after running for a period of time, certain operating parameters are obtained, and then the initial opening degree of the throttling device is determined, which solves the problem of unstable system operation caused by unreasonable selection of the opening degree when the air conditioning system is turned on.

[0028] According to the technical solution of the present invention, an initial opening degree base value is determined based on the compressor frequency, indoor ambient temperature, and outdoor ambient temperature, and then corrected based on the temperature difference between the indoor ambient temperature and the air conditioner set temperature to obtain a suitable initial opening degree.

[0029] According to the technical solution of this invention, the opening degree of the throttling device is controlled differently in three different stages: start-up opening degree control, initial opening degree control, and outlet air temperature and target exhaust temperature adjustment control. During startup, a starting opening degree of the throttling device is given to allow the air conditioner to operate for a period of time and acquire certain parameters. Then, the initial opening degree of the throttling device is determined based on the compressor frequency and indoor and outdoor ambient temperatures, allowing the air conditioner to operate based on a suitable throttling device opening degree. Further precise adjustment of the throttling device is then performed based on the outlet air temperature and exhaust temperature, making the opening degree adjustment more accurate. This solves the problem of inconsistent opening degrees caused by existing electronic expansion valves that use only intake superheat or exhaust temperature to control the electronic expansion valve opening. The opening degree can be adjusted based on the actual operating conditions of the air conditioner, precisely controlling the opening degree of the electronic expansion valve and improving system performance and efficiency. Attached Figure Description

[0030] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0031] Figure 1 This is a schematic diagram of an embodiment of the method for the throttling device of an air conditioner provided by the present invention;

[0032] Figure 2 A flowchart illustrating a specific embodiment for determining the initial opening degree of the throttling device of the air conditioner is shown;

[0033] Figure 3 A flowchart illustrating a specific embodiment of adjusting the opening of the throttling device based on the air outlet temperature and the target exhaust temperature of the air conditioner is shown.

[0034] Figure 4 This is a schematic diagram of a specific embodiment of the control method for the throttling device provided by the present invention;

[0035] Figure 5 A schematic diagram of the control logic during the initial opening control phase is shown.

[0036] Figure 6 This diagram illustrates the control logic for the opening control phase.

[0037] Figure 7 This is a structural block diagram of an embodiment of the control device for the throttling device of an air conditioner provided by the present invention;

[0038] Figure 8 This is a structural block diagram of a determining unit according to a specific embodiment of the present invention;

[0039] Figure 9 This is a structural block diagram of an adjustment unit according to a specific embodiment of the present invention. Detailed Implementation

[0040] 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 in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0041] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0042] To avoid issues such as inconsistent opening of the throttling device (e.g., electronic expansion valve) caused by using single suction superheat or exhaust temperature control during air conditioning unit startup, a multi-stage opening control method can be adopted for throttling device opening adjustment. This method incorporates the outlet air temperature and adjusts the throttling device opening based on changes in the outlet air temperature. Simultaneously, the target exhaust temperature is used for correction. This ensures system stability and allows for intuitive adjustment of refrigerant flow based on changes in terminal load, improving system performance and efficiency, reducing the number of temperature sensors used, and effectively lowering costs.

[0043] This invention provides a control method for a throttling device in an air conditioner. The throttling device is mainly used for regulating and controlling the refrigerant flow. Specifically, the throttling device can be an electronic expansion valve. More specifically, the throttling device can be a throttling device between the evaporator and condenser of the air conditioning system.

[0044] Figure 1 This is a schematic diagram of an embodiment of the throttling device method for an air conditioner provided by the present invention.

[0045] like Figure 1 As shown, according to an embodiment of the present invention, the control method for the throttling device of the air conditioner includes at least steps S120 and S130. Preferably, the control method further includes step S110.

[0046] Step S110: When the air conditioner is started, control the throttling device to open according to a preset start-up degree, and control the air conditioner to run for a first preset duration based on the start-up degree of the throttling device.

[0047] Specifically, when the air conditioner starts, for example, after the air conditioner receives the start information, the throttling device (such as an electronic expansion valve) performs a reset action, and then detects the current operating mode (such as the operating mode activated by the user or the operating mode automatically selected according to the indoor ambient temperature). Different throttling device opening adjustment methods are corresponding to the cooling or dehumidification mode and the heating mode. If the current operating mode is not any of the cooling mode, dehumidification mode and heating mode, then there is no need to adjust the opening of the throttling device.

[0048] At this time, the air conditioner's compressor, outdoor fan, etc., have not yet started and there are no corresponding operating parameters. Therefore, a start-up opening degree P0 is preset. Preferably, the start-up opening degree for cooling or dehumidification mode is different from that for heating mode. The throttling device is controlled to open according to the preset start-up opening degree P0, and the air conditioner is controlled to run for a first preset time Δt1 based on the start-up opening degree. The value range of the first preset time Δt1 is 5 to 10 minutes. The air conditioner starts and runs at this start-up opening degree. After running for the first preset time Δt1, the air conditioning system has certain operating parameters and then enters the next stage of opening degree control.

[0049] Step S120: After the air conditioner is started, the initial opening degree of the throttling device of the air conditioner is determined, and the air conditioner is controlled to run for a second preset time based on the determined initial opening degree of the throttling device.

[0050] Preferably, after controlling the air conditioner to operate for a first preset time based on the start-up opening of the throttling device, the initial opening of the throttling device of the air conditioner is determined, and the air conditioner is controlled to operate for a second preset time based on the initial opening of the throttling device.

[0051] Specifically, the initial opening degree of the throttling device can be determined based on the indoor ambient temperature, the outdoor ambient temperature, and the compressor frequency of the air conditioner. Figure 2 A flowchart illustrating a specific embodiment for determining the initial opening degree of the throttling device of the air conditioner is shown. Figure 2 As shown, step S120 includes steps S121 and S122.

[0052] Step S121: Calculate the initial opening base value of the throttling device based on the indoor ambient temperature, the outdoor ambient temperature, and the compressor frequency of the air conditioner.

[0053] In one specific embodiment, the initial opening base value P1 of the throttling device is calculated using the following formula based on the indoor ambient temperature, the outdoor ambient temperature, and the compressor frequency of the air conditioner:

[0054] P1=a*F 压缩机频率 +b*T 室内环境温度 +c*T 室外环境温度 +d

[0055] Among them, F 压缩机频率 T is the compressor frequency. 室内环境温度 Indoor ambient temperature, T 室外环境温度 The outdoor ambient temperature is represented by a, b, c, and d, which are fitting parameters that can be obtained by fitting experimental data.

[0056] Step S122: Correct the initial opening value based on the first temperature difference between the set temperature of the air conditioner and the indoor ambient temperature to obtain the initial opening of the throttling device.

[0057] The first temperature difference between the set temperature and the indoor ambient temperature is ΔT1 = T 设定温度 -T 室内环境温度 .

[0058] In one specific embodiment, the temperature range in which the first temperature difference lies among two or more preset temperature ranges is determined. Each of the two or more preset temperature ranges corresponds to an opening value. The opening value corresponding to each temperature range may be the same or different in cooling or dehumidification mode and in heating mode. That is, the opening value corresponding to the same temperature range may be the same or different in cooling or dehumidification mode and in heating mode. The opening value corresponding to the temperature range in which the first temperature difference lies among the two or more preset temperature ranges is determined as an opening correction value for correcting the initial opening base value. Based on the current operating mode of the air conditioner and the determined opening correction value for correcting the initial opening base value, the initial opening base value is corrected to obtain the initial opening of the throttling device. Specifically, when the current operating mode of the air conditioner is cooling mode or dehumidification mode, the initial opening of the throttling device is the initial opening base value plus the opening correction value; when the current operating mode of the air conditioner is heating mode, the initial opening of the throttling device is the initial opening base value minus the opening correction value.

[0059] For example, when the air conditioner is currently operating in cooling mode or dehumidification mode,

[0060] If △T≥5℃, then the initial opening degree is increased by 10P (P is the opening degree unit) based on the initial opening degree base value P1;

[0061] If 3℃ < ΔT < 5℃, then the initial opening degree is increased by 6P based on the initial opening degree base value P1;

[0062] If 0℃≤△T<2℃, then the initial opening degree remains unchanged as the initial opening degree base value P1.

[0063] If ΔT < 0℃, the initial opening is reduced by 15P based on the initial opening base value P1.

[0064] When the air conditioner is currently operating in heating mode,

[0065] If the temperature range is △T≥5℃, then the initial opening is reduced by 10P based on the initial opening base value P1;

[0066] If 3℃ < ΔT < 5℃, then the initial opening is reduced by 8P based on the initial opening base value P1;

[0067] If 0℃≤△T<2℃, then the initial opening degree remains unchanged as the initial opening degree base value P1.

[0068] If ΔT < 0℃, the initial opening degree is increased by 15P based on the initial opening degree base value P1.

[0069] In cooling or dehumidification mode, if the set temperature of the air conditioner is higher than the indoor ambient temperature, it means that the cooling capacity meets the requirements and is sufficient. The opening of the throttling device can be appropriately increased to reduce the superheat of the refrigerant, thereby reducing the cooling capacity. The opening value is increased based on the initial opening value because the fitted value is not 100% equal to the experimental value and there is an error. Increasing the opening value is to make compensation corrections and prevent the calculated opening value from being too small.

[0070] In heating mode, if the set temperature of the air conditioner is higher than the indoor ambient temperature, it means that the heating capacity is not sufficient. It is necessary to adjust the opening of the throttling device to increase the superheat of the refrigerant, thereby increasing the heating capacity. The opening value is reduced from the initial base value because the fitted value is not 100% equal to the experimental value and there is an error. Reducing the opening value is to make compensation corrections and prevent the calculated opening value from being too large.

[0071] After the air conditioner operates for a second preset time based on the initial opening of the throttling device, it enters the next stage of throttling device opening adjustment. The value range of the second preset time is 5 to 20 minutes.

[0072] Step S130: After controlling the air conditioner to run for a second preset time based on the determined initial opening of the throttling device, the opening of the throttling device is adjusted according to the air outlet temperature and the target exhaust temperature of the air conditioner.

[0073] Figure 3 A flowchart illustrating a specific embodiment of adjusting the opening of the throttling device based on the air outlet temperature and the target exhaust temperature of the air conditioner is shown. Figure 3 As shown, step S130 includes steps S131 and S132.

[0074] Step S131: Determine the operating opening after adjusting the opening of the throttling device based on the second temperature difference between the air outlet temperature and the set temperature of the air conditioner and the initial opening.

[0075] The second temperature difference between the air conditioner's outlet temperature and its set temperature is ΔT2 = T. 出风温度 -T 设定温度 .

[0076] When the air conditioner is currently operating in cooling or dehumidifying mode, if the second temperature difference ΔT2 is greater than or equal to the first preset temperature threshold and less than or equal to the second preset temperature threshold, the throttling device maintains its initial opening. If the second temperature difference is greater than the second preset temperature threshold, the operating opening of the throttling device is equal to the initial opening plus the product of the first preset correction parameter and the second temperature difference. If the second temperature difference is less than the first preset temperature threshold, the operating opening of the throttling device is equal to the initial opening minus the product of the first preset correction parameter and the second temperature difference. Wherein, the first preset temperature threshold is less than the second preset temperature threshold.

[0077] For example, the first preset temperature threshold is 0℃, the second preset temperature threshold is 2℃; the initial opening degree of the throttling device is P1, the operating opening degree of the throttling device is P2, and K1 is the first correction coefficient;

[0078] If 0℃≤△T2≤2℃, the operating opening of the throttling device P2=P1 remains unchanged;

[0079] If ΔT2 > 2℃, the operating opening of the throttling device is P2 = P1 - K1ΔT2;

[0080] If △T2 < 0℃, the operating opening of the throttling device is P2 = P1 + K1△T2.

[0081] In cooling or dehumidification mode, if the difference between the air conditioner's outlet temperature and the set temperature is within a certain range, it indicates that the current opening control is reasonable and no adjustment is needed; if the difference between the air conditioner's outlet temperature and the set temperature is greater than the second preset temperature threshold, it indicates that the current cooling capacity is insufficient and the opening of the throttling device needs to be reduced; if the difference between the air conditioner's outlet temperature and the set temperature is less than the first preset temperature threshold, it indicates that the current cooling capacity is sufficient and the opening of the throttling device needs to be increased.

[0082] When the air conditioner is currently operating in heating mode, if the second temperature difference is greater than or equal to the first preset temperature threshold and less than or equal to the second preset temperature threshold, the throttling device maintains its initial opening. If the second temperature difference is greater than the second preset temperature threshold, the operating opening of the throttling device is equal to the initial opening minus the product of the second preset correction parameter and the second temperature difference. If the second temperature difference is less than the first preset temperature threshold, the operating opening of the throttling device is equal to the initial opening plus the product of the second preset correction parameter and the second temperature difference. Wherein, the first preset temperature threshold is less than the second preset temperature threshold.

[0083] For example, the first preset temperature threshold is 0℃, the second preset temperature threshold is 5℃; the initial opening degree of the throttling device is P1, the operating opening degree of the throttling device is P2, and K2 is the second correction coefficient;

[0084] If 0℃≤△T2≤2℃, the operating opening of the throttling device P2=P1 remains unchanged;

[0085] If ΔT2 > 2℃, the operating opening of the throttling device is P2 = P1 - K2ΔT2;

[0086] If ΔT2 < 0℃, the operating opening of the throttling device is P2 = P1 + K2ΔT2.

[0087] In heating mode, if the difference between the air conditioner's outlet temperature and the set temperature is within a certain range, it indicates that the current opening control is reasonable and no adjustment is needed; if the difference between the air conditioner's outlet temperature and the set temperature is greater than the second preset temperature threshold, it indicates that the current heating capacity is insufficient and the opening of the throttling device needs to be increased; if the difference between the air conditioner's outlet temperature and the set temperature is less than the first preset temperature threshold, it indicates that the current heating capacity is sufficient and the opening of the throttling device needs to be decreased.

[0088] Optionally, when the air conditioner is currently operating in heating mode, after controlling the air conditioner to operate based on the initial opening degree, when the air conditioner performs a defrosting operation, the opening degree of the throttling device is adjusted according to the degree of frost on the outdoor heat exchanger, wherein: the degree of frost on the outdoor heat exchanger is determined to be thin frost, medium frost, or heavy frost based on the outdoor ambient temperature and outdoor ambient relative humidity; when the degree of frost on the outdoor heat exchanger is thin frost, the opening degree of the throttling device is increased to a first set ratio of the maximum opening degree; when the degree of frost on the outdoor heat exchanger is medium frost, the opening degree of the throttling device is increased to a second set ratio of the maximum opening degree; when the degree of frost on the outdoor heat exchanger is heavy frost, the opening degree of the throttling device is increased to a third set ratio of the maximum opening degree; wherein the first set ratio is less than the second set ratio, and the second set ratio is less than the third set ratio.

[0089] Specifically, the defrosting process during the heating phase includes adjusting the defrosting opening. A suitable defrosting opening can effectively improve the defrosting rate, reduce defrosting time, and minimize the impact on the indoor ambient temperature. After acquiring the outdoor relative humidity, outdoor ambient temperature, outdoor heat exchanger tube temperature, and continuous operating time, and determining that the preset defrosting conditions are met, a defrosting operation is performed on the outdoor heat exchanger. The degree of frost on the outdoor heat exchanger is determined as thin frost, medium frost, or heavy frost based on the outdoor ambient temperature and relative humidity. More specifically, thin frost, medium frost, and heavy frost are categorized according to temperature and humidity ranges. That is, different combinations of temperature and humidity ranges correspond to different degrees of frost (thin frost, medium frost, and heavy frost). The degree of frost on the outdoor heat exchanger is determined as thin frost, medium frost, or heavy frost based on the temperature range and relative humidity range of the outdoor ambient temperature. For example: when the outdoor ambient temperature is -15℃ to 5℃ and the relative humidity is below 65%, it is a light frost; when the outdoor ambient temperature is -5℃ to 11.5℃ and the relative humidity is below 65%, it is a medium frost; when the outdoor ambient temperature is -5℃ to 11.5℃ and the relative humidity is above 65%, it is a heavy frost.

[0090] For adjusting the opening of the throttling device during defrosting, for example, for light frost, the opening of the throttling device is increased to 1 / 2 of the maximum opening; for medium frost, the opening of the throttling device is increased to 2 / 3 of the maximum opening; for heavy frost, the opening of the throttling device is increased to 3 / 4 of the maximum opening.

[0091] After the air conditioner defrost operation is completed, the operating opening of the throttling device is adjusted according to the current exhaust temperature and the target exhaust temperature of the air conditioner. The step of adjusting the operating opening of the throttling device according to the current exhaust temperature and the target exhaust temperature is basically the same as the step of adjusting the determined operating opening of the throttling device according to the current exhaust temperature and the target exhaust temperature (step S132), and can be referred to the description of the step of adjusting the determined operating opening of the throttling device according to the current exhaust temperature and the target exhaust temperature.

[0092] Step S132: Adjust the operating opening of the throttling device according to the current exhaust temperature and the target exhaust temperature of the air conditioner.

[0093] In one specific embodiment, if the current exhaust temperature of the air conditioner is greater than or equal to the target exhaust temperature, and less than the sum of the target exhaust temperature and a first preset temperature value, then the operating opening of the throttling device is increased by a first preset opening value; if the current exhaust temperature of the air conditioner is greater than or equal to the sum of the target exhaust temperature and the first preset temperature value, and less than the sum of the target exhaust temperature and a second preset temperature value, then the operating opening of the throttling device is increased by a second preset opening value; if the current exhaust temperature of the air conditioner is greater than or equal to the sum of the target exhaust temperature and the second preset temperature value, and less than the sum of the target exhaust temperature and a third preset temperature value, then the operating opening of the throttling device is increased by a third preset opening value; if the current exhaust temperature of the air conditioner is greater than or equal to the sum of the target exhaust temperature and the third preset temperature value, then the operating opening value of the throttling device is increased to the maximum opening value of the throttling device; when the current exhaust temperature of the air conditioner is less than the target exhaust temperature, normal opening adjustment is restored.

[0094] For example, the first preset temperature value is 5℃, the second preset temperature value is 8℃, and the third preset temperature value is 10℃;

[0095] If T 目标排气温度 ≤T 排气温度 <T 目标排气温度 At +5℃, increase the opening of the throttling device by 10P;

[0096] If T 目标排气温度 +5℃≤T 排气温度 <T 目标排气温度 At +8℃, increase the opening of the throttling device by 15P;

[0097] If T 目标排气温度 +8℃≤T 排气温度 <T 目标排气温度 +10℃, increase the opening of the throttling device by 20P;

[0098] If T 排气温度 ≥T 目标排气温度 +10℃, open the throttling device to its maximum value; when T 排气温度 <T 目标排气温度 Normal opening adjustment will be restored in time.

[0099] As mentioned above, after obtaining the operating opening P2, the current exhaust temperature (i.e., the actual exhaust temperature) is compared with the target exhaust temperature. If the actual exhaust temperature is greater than the target exhaust temperature, it indicates that the current opening value of the throttling device is too small. To maintain system stability, the opening determined solely by the temperature difference between the outlet air temperature and the set temperature may be too small, requiring further adjustment. Therefore, after obtaining the operating opening P2, to ensure system stability, the opening of the throttling device is increased by a certain value based on the operating opening P2. The determination of the increase in opening value for different ranges of target exhaust temperature and actual exhaust temperature is derived from experimental findings.

[0100] Preferably, the opening degree of the throttling device is adjusted according to the air outlet temperature and the target exhaust temperature of the air conditioner every third preset time interval.

[0101] The technical solution of this invention controls the opening degree of the air conditioner's throttling device in three stages: startup opening degree, initial opening degree, outlet air temperature, and target exhaust temperature. This allows for more precise opening degree adjustment and eliminates the need to measure the suction and evaporator inlet and outlet temperatures. Furthermore, by incorporating outlet air temperature, the technical solution adjusts the throttling device opening degree based on changes in outlet air temperature. Simultaneously, the target outlet air temperature is used for correction, ensuring system stability and allowing for intuitive adjustment of refrigerant flow based on changes in terminal load. This improves system performance and efficiency while reducing the number of temperature sensors required, effectively lowering costs.

[0102] To clearly illustrate the technical solution of the present invention, the execution flow of the control method for the throttling device of the air conditioner provided by the present invention will be described below with reference to a specific embodiment.

[0103] Figure 4 This is a schematic diagram of a specific embodiment of the control method for the throttling device provided by the present invention.

[0104] like Figure 4 As shown, after receiving the start-up information, the air conditioner resets the throttling device (e.g., electronic expansion valve), then detects the current operating mode and uses different opening adjustment methods for different modes.

[0105] When the current operating mode is detected to be cooling or dehumidifying, the compressor, outdoor fan, etc., have not yet started and there are no corresponding operating parameters. The opening degree of the throttling device (e.g., electronic expansion valve) is controlled and adjusted in three stages. In the first stage, the opening degree of the throttling device (e.g., electronic expansion valve) is preset to a starting opening degree P0, and the air conditioning system starts operating using this opening degree; after running for Δt1 time, the air conditioning system has certain operating parameters and enters the second stage of opening degree control.

[0106] Figure 5A schematic diagram of the control logic for the initial opening control phase is shown. Figure 5 As shown, the second stage of opening control calculates the initial opening degree P1 based on the compressor frequency, indoor ambient temperature, and outdoor ambient temperature, where P1 = a * F 压缩机频率 +b*T 室内环境温度 +c*T 室外环境温度 +d; Then, adjust the initial opening P1 according to the difference △T1 between the set temperature and the indoor ambient temperature, △T1=T 设定温度 -T 室内环境温 Spend;

[0107] If △T1≥5℃, the initial opening P1 is increased by 10P (P is the unit of opening) based on the calculated value;

[0108] If 3℃ < △T1 < 5℃, the initial opening P1 is increased by 6P based on the calculated value;

[0109] If 0℃≤△T1<2℃, the initial opening P1 remains unchanged; if △T1<0℃, the initial opening P1 is reduced by 15P based on the calculated value.

[0110] Based on the initial opening P1, the process runs for Δt2 time, after which it enters the third stage. Figure 6 A schematic diagram of the control logic for the opening control phase is shown. (For example...) Figure 6 As shown, the opening of the electronic expansion valve is adjusted according to the outlet air temperature and the target exhaust temperature. The outlet air temperature and exhaust temperature are detected by a temperature sensor, and the set temperature is retrieved. The opening of the electronic expansion valve is calculated based on the temperature difference ΔT2 between the outlet air temperature and the set temperature; ΔT2 = T 出风温度 -T 设定温 Spend,

[0111] If ΔT2 = 0℃, the opening degree of the electronic expansion valve P2 = P1 remains unchanged;

[0112] If △T2>5℃, the opening degree of the electronic expansion valve P2=P1-K1△T2;

[0113] If ΔT2 < 0℃, the opening degree of the electronic expansion valve P2 = P1 + K1ΔT2;

[0114] After obtaining the electronic expansion valve opening P2, the throttling device opening is corrected according to the target exhaust temperature. During the adjustment process...

[0115] If T 目标排气温度 ≤T 排气温度 <T 目标排气温度 At +5℃, increase the opening of the throttling device by 10P;

[0116] If T 目标排气温度 +5℃≤T 排气温度 <T 目标排气温度At +8℃, increase the opening of the throttling device by 15P;

[0117] If T 目标排气温度 +8℃≤T 排气温度 <T 目标排气温度 At +10℃, increase the opening of the throttling device by 15P;

[0118] If T 排气温度 ≥T 目标排气温度 At +10℃, open the throttling device to its maximum value;

[0119] When T 排气温度 <T 目标排气温度 Normal opening adjustment will be restored in time.

[0120] During the third stage of opening adjustment, data is collected every Δt3 time interval for calculation and judgment to adjust the opening size of the electronic expansion valve.

[0121] When the current operating mode is detected to be heating mode, the compressor, outdoor fan, etc. have not yet started and there are no corresponding operating parameters. The opening degree of the throttling device (e.g., electronic expansion valve) is controlled and adjusted in three stages. In the first stage, the throttling device (e.g., electronic expansion valve) controls a pre-given starting opening degree P0, and the air conditioning system starts to operate using this opening degree. After running for Δt1 time, the air conditioning system has certain operating parameters and enters the second stage of opening degree control.

[0122] Figure 5 A schematic diagram of the control logic for the initial opening control phase is shown. Figure 5 As shown, the second stage of opening control calculates the initial opening P1 based on the compressor frequency, indoor ambient temperature, and outdoor ambient temperature. Then, it corrects and adjusts the initial opening P1 based on the difference between the set temperature and the indoor ambient temperature, ΔT1. If ΔT1 = T... 设定温度 -T 室内环境温度 ;

[0123] If △T1≥5℃, the initial opening P1 is reduced by 10P based on the calculated value;

[0124] If 3℃ < △T1 < 5℃, the initial opening P1 is reduced by 8P based on the calculated value;

[0125] If 0 ≤ ℃ △T1 < 2℃, the initial opening P1 remains unchanged;

[0126] If △T1 < 0℃, the initial opening P1 is increased by 15P based on the calculated value.

[0127] Based on the initial opening P1, the process runs for Δt2 time, after which it enters the third stage. Figure 6 A schematic diagram of the control logic for the opening control phase is shown. (For example...) Figure 6As shown, in the third stage, the opening of the electronic expansion valve is adjusted according to the outlet air temperature and the target exhaust temperature. The air conditioner's outlet air temperature and exhaust temperature are detected by a temperature sensor, and the set air conditioner temperature is retrieved. The opening of the electronic expansion valve is calculated based on the temperature difference ΔT2 between the outlet air temperature and the set temperature; ΔT = T_outlet air temperature - T_set temperature.

[0128] If ΔT2 = 0℃, the opening degree of the electronic expansion valve P2 = P1 remains unchanged;

[0129] If △T2>5℃, the opening degree of the electronic expansion valve P2=P1+K2△T;

[0130] If ΔT2 < 0℃, the opening degree of the electronic expansion valve is P2 = P1 - K2ΔT2.

[0131] The heating phase also includes adjusting the defrost opening. A suitable defrost opening can effectively improve the defrost rate, reduce defrost time, and minimize the impact on indoor temperature. Regarding changes in the defrost opening:

[0132] Thin frost, the opening degree P2 of the electronic expansion valve increases to 1 / 2 of the maximum opening degree;

[0133] During the frost, the opening degree P2 of the electronic expansion valve increases to 2 / 3 of its maximum opening degree;

[0134] During heavy frost, the opening degree P2 of the electronic expansion valve increases to 3 / 4 of its maximum opening degree.

[0135] After obtaining the electronic expansion valve opening value P2, the electronic expansion valve opening is corrected based on the current actual exhaust temperature and the target exhaust temperature:

[0136] If T 目标排气温度 ≤T 排气温度 <T 目标排气温度 At +5℃, increase the opening of the electronic expansion valve by 10P;

[0137] If T 目标排气温度 +5℃≤T 排气温度 <T 目标排气温度 At +8℃, increase the opening of the electronic expansion valve by 15P;

[0138] If T 目标排气温度 +8℃≤T 排气温度 <T 目标排气温度 At +10℃, increase the opening of the electronic expansion valve by 20P;

[0139] If T 排气温度 ≥T 目标排气温度 At +10℃, open the electronic expansion valve to its maximum value;

[0140] When T 排气温度 <T 目标排气温度 When the time comes, resume normal opening adjustment.

[0141] Preferably, during the third stage of opening adjustment, the opening of the electronic expansion valve is adjusted once every Δt3.

[0142] If the air conditioner is detected to be not in cooling, dehumidification, or heating mode, then no adjustment to the opening degree is required.

[0143] The present invention also provides a control device for a throttling device in an air conditioner. The throttling device is mainly used for regulating and controlling the flow of refrigerant. Specifically, the throttling device can be an electronic expansion valve. More specifically, the throttling device can be a throttling device between the evaporator and condenser of the air conditioning system.

[0144] Figure 7 This is a structural block diagram of an embodiment of the control device for the throttling device of an air conditioner provided by the present invention. Figure 7 As shown, the control device 100 of the throttling device includes a determining unit 110, a control unit 120, and an adjusting unit 130.

[0145] The determining unit 110 is used to determine the initial opening degree of the throttling device after the air conditioner is started.

[0146] Preferably, the control unit 120 is further configured to: control the throttling device to open according to a preset opening degree when the air conditioner is started, and control the air conditioner to run for a first preset duration based on the opening degree of the throttling device; after the control unit 120 controls the air conditioner to run for a first preset duration based on the opening degree of the throttling device, the determining unit 110 determines the initial opening degree of the throttling device according to the indoor ambient temperature, the outdoor ambient temperature, the compressor frequency of the air conditioner, and the set temperature of the air conditioner.

[0147] Specifically, when the air conditioner starts, for example, after receiving a start-up signal, the throttling device (e.g., an electronic expansion valve) resets, and then detects the current operating mode (e.g., the user-activated mode or the mode automatically selected based on the indoor ambient temperature). Different throttling device opening adjustments are applied for cooling / dehumidifying and heating modes, respectively. If the current operating mode is not one of cooling, dehumidifying, or heating, no adjustment of the throttling device opening is required.

[0148] At this time, the air conditioner's compressor, outdoor fan, etc., have not yet started and there are no corresponding operating parameters. Therefore, a start-up opening degree P0 is preset. Preferably, the start-up opening degree for cooling or dehumidification mode is different from that for heating mode. The throttling device is controlled to open according to the preset start-up opening degree P0, and the air conditioner is controlled to run for a first preset time Δt1 based on the start-up opening degree. The value range of the first preset time Δt1 is 5 to 10 minutes. The air conditioner starts and runs at this start-up opening degree. After running for the first preset time Δt1, the air conditioning system has certain operating parameters and then enters the next stage of opening degree control.

[0149] In one specific embodiment, the determining unit 110 determines the initial opening degree of the throttling device based on the indoor ambient temperature, the outdoor ambient temperature, the compressor frequency of the air conditioner, and the set temperature of the air conditioner. The control unit 120 is used to control the air conditioner to operate for a second preset duration based on the initial opening degree.

[0150] Figure 8 This is a structural block diagram of a determining unit according to a specific embodiment of the present invention. For example... Figure 8 As shown, in one specific embodiment, the determining unit 110 includes a calculation subunit 111 and a correction subunit 112.

[0151] The calculation subunit 111 is used to calculate the initial opening base value of the throttling device based on the indoor ambient temperature, the outdoor ambient temperature and the compressor frequency of the air conditioner.

[0152] In one specific embodiment, the calculation subunit 111 calculates the initial opening base value P1 of the throttling device using the following formula based on the indoor ambient temperature, the outdoor ambient temperature, and the compressor frequency of the air conditioner:

[0153] P1=a*F 压缩机频率 +b*T 室内环境温度 +c*T 室外环境温度 +d

[0154] Among them, F 压缩机频率 T is the compressor frequency. 室内环境温度 Indoor ambient temperature, T 室外环境温度 The outdoor ambient temperature is represented by a, b, c, and d, which are fitting parameters that can be obtained by fitting experimental data.

[0155] The correction subunit 112 is used to correct the initial opening base value based on the first temperature difference between the set temperature of the air conditioner and the indoor ambient temperature to obtain the initial opening of the throttling device.

[0156] The first temperature difference between the set temperature and the indoor ambient temperature is ΔT1 = T 设定温度 -T 室内环境温度 .

[0157] In one specific embodiment, the correction subunit 112 corrects the initial opening base value based on a first temperature difference between the set temperature of the air conditioner and the indoor ambient temperature to obtain the initial opening of the throttling device. This includes: determining the temperature range in which the first temperature difference falls within two or more preset temperature ranges, wherein each of the two or more preset temperature ranges corresponds to an opening value, and the opening value corresponding to each temperature range may be the same or different in cooling or dehumidification mode and in heating mode. That is, the opening value corresponding to the same temperature range may be the same or different in cooling or dehumidification mode and in heating mode. The opening value corresponding to the temperature range in which the first temperature difference lies within the two or more preset temperature ranges is determined as the opening correction value for correcting the initial opening base value. Based on the current operating mode of the air conditioner and the determined opening correction value, the initial opening base value is corrected to obtain the initial opening of the throttling device. Specifically, when the current operating mode of the air conditioner is cooling mode or dehumidification mode, the initial opening of the throttling device is the initial opening base value plus the opening correction value; when the current operating mode of the air conditioner is heating mode, the initial opening of the throttling device is the initial opening base value minus the opening correction value.

[0158] For example, when the air conditioner is currently operating in cooling mode or dehumidification mode,

[0159] If △T≥5℃, then the initial opening degree is increased by 10P based on the initial opening degree base value P1;

[0160] If 3℃ < ΔT < 5℃, then the initial opening degree is increased by 6P based on the initial opening degree base value P1;

[0161] If 0℃≤△T<2℃, then the initial opening degree remains unchanged as the initial opening degree base value P1.

[0162] If ΔT < 0℃, the initial opening is reduced by 15P based on the initial opening base value P1.

[0163] When the air conditioner is currently operating in heating mode,

[0164] If the temperature range is △T≥5℃, then the initial opening is reduced by 10P based on the initial opening base value P1;

[0165] If 3℃ < ΔT < 5℃, then the initial opening is reduced by 8P based on the initial opening base value P1;

[0166] If 0℃≤△T<2℃, then the initial opening degree remains unchanged as the initial opening degree base value P1.

[0167] If ΔT < 0℃, the initial opening degree is increased by 15P based on the initial opening degree base value P1.

[0168] In cooling or dehumidification mode, if the set temperature of the air conditioner is higher than the indoor ambient temperature, it means that the cooling capacity meets the requirements and is sufficient. The opening of the throttling device can be appropriately increased to reduce the superheat of the refrigerant, thereby reducing the cooling capacity. The opening value is increased based on the initial opening value because the fitted value is not 100% equal to the experimental value and there is an error. Increasing the opening value is to make compensation corrections and prevent the calculated opening value from being too small.

[0169] In heating mode, if the set temperature of the air conditioner is higher than the indoor ambient temperature, it means that the heating capacity is not sufficient. It is necessary to adjust the opening of the throttling device to increase the superheat of the refrigerant, thereby increasing the heating capacity. The opening value is reduced from the initial base value because the fitted value is not 100% equal to the experimental value and there is an error. Reducing the opening value is to make compensation corrections and prevent the calculated opening value from being too large.

[0170] After the control unit 120 controls the air conditioner to run for a second preset time based on the initial opening degree, the opening degree of the throttling device in the next stage is adjusted. The value range of the second preset time is 5 to 20 minutes.

[0171] The adjustment unit 130 is used to adjust the opening of the throttling device according to the air outlet temperature and the target exhaust temperature of the air conditioner after the control unit controls the air conditioner to run for a second preset time based on the initial opening of the throttling device determined by the determination unit 120.

[0172] Figure 9 This is a structural block diagram of an adjustment unit according to a specific embodiment of the present invention. Figure 9 As shown, in one specific embodiment, the adjustment unit 130 includes a determining subunit 131 and an adjusting subunit 132.

[0173] The determining subunit 131 is used to determine the operating opening after adjusting the opening of the throttling device based on the second temperature difference between the air outlet temperature of the air conditioner and the set temperature of the air conditioner and the initial opening.

[0174] The second temperature difference between the air conditioner's outlet temperature and its set temperature is ΔT2 = T. 出风温度 -T 设定温度 .

[0175] When the current operating mode of the air conditioner is cooling mode or dehumidification mode, the determining subunit 131 determines the operating opening after adjusting the opening of the throttling device based on the second temperature difference between the air outlet temperature and the set temperature of the air conditioner and the initial opening. Specifically, this may include: if the second temperature difference ΔT2 is greater than or equal to a first preset temperature threshold and less than or equal to a second preset temperature threshold, the throttling device maintains the initial opening unchanged; if the second temperature difference is greater than the second preset temperature threshold, the operating opening of the throttling device is equal to the initial opening plus the product of the first preset correction parameter and the second temperature difference; if the second temperature difference is less than the first preset temperature threshold, the operating opening of the throttling device is equal to the initial opening minus the product of the first preset correction parameter and the second temperature difference; wherein, the first preset temperature threshold is less than the second preset temperature threshold.

[0176] For example, the first preset temperature threshold is 0℃, the second preset temperature threshold is 2℃; the initial opening degree of the throttling device is P1, the operating opening degree of the throttling device is P2, and K1 is the first correction coefficient;

[0177] If 0℃≤△T2≤2℃, the operating opening of the throttling device P2=P1 remains unchanged;

[0178] If ΔT2 > 2℃, the operating opening of the throttling device is P2 = P1 - K1ΔT2;

[0179] If △T2 < 0℃, the operating opening of the throttling device is P2 = P1 + K1△T2.

[0180] In cooling or dehumidification mode, if the difference between the air conditioner's outlet temperature and the set temperature is within a certain range, it indicates that the current opening control is reasonable and no adjustment is needed; if the difference between the air conditioner's outlet temperature and the set temperature is greater than the second preset temperature threshold, it indicates that the current cooling capacity is insufficient and the opening of the throttling device needs to be reduced; if the difference between the air conditioner's outlet temperature and the set temperature is less than the first preset temperature threshold, it indicates that the current cooling capacity is sufficient and the opening of the throttling device needs to be increased.

[0181] When the current operating mode of the air conditioner is heating mode, the determining subunit 131 determines the operating opening after adjusting the opening of the throttling device based on the second temperature difference between the air outlet temperature and the set temperature of the air conditioner and the initial opening. Specifically, this may include: if the second temperature difference is greater than or equal to a first preset temperature threshold and less than or equal to a second preset temperature threshold, the throttling device maintains the initial opening unchanged; if the second temperature difference is greater than the second preset temperature threshold, the operating opening of the throttling device is equal to the initial opening minus the product of the second preset correction parameter and the second temperature difference; if the second temperature difference is less than the first preset temperature threshold, the operating opening of the throttling device is equal to the initial opening plus the product of the second preset correction parameter and the second temperature difference; wherein, the first preset temperature threshold is less than the second preset temperature threshold.

[0182] For example, the first preset temperature threshold is 0℃, the second preset temperature threshold is 5℃; the initial opening degree of the throttling device is P1, the operating opening degree of the throttling device is P2, and K2 is the second correction coefficient;

[0183] If 0℃≤△T2≤2℃, the operating opening of the throttling device P2=P1 remains unchanged;

[0184] If ΔT2 > 2℃, the operating opening of the throttling device is P2 = P1 - K2ΔT2;

[0185] If ΔT2 < 0℃, the operating opening of the throttling device is P2 = P1 + K2ΔT2.

[0186] In heating mode, if the difference between the air conditioner's outlet temperature and the set temperature is within a certain range, it indicates that the current opening control is reasonable and no adjustment is needed; if the difference between the air conditioner's outlet temperature and the set temperature is greater than the second preset temperature threshold, it indicates that the current heating capacity is insufficient and the opening of the throttling device needs to be increased; if the difference between the air conditioner's outlet temperature and the set temperature is less than the first preset temperature threshold, it indicates that the current heating capacity is sufficient and the opening of the throttling device needs to be decreased.

[0187] Optionally, the control device 100 further includes a defrosting opening adjustment unit (not shown), used to adjust the opening of the throttling device according to the degree of frost on the outdoor heat exchanger when the air conditioner is currently in heating mode, after the control unit controls the air conditioner to operate based on the initial opening, and when the air conditioner performs a defrosting operation; the adjustment unit 130 is also used to adjust the operating opening of the throttling device according to the current exhaust temperature and the target exhaust temperature of the air conditioner after the defrosting operation of the air conditioner is completed.

[0188] Specifically: the degree of frost on the outdoor heat exchanger is determined as thin frost, medium frost, or heavy frost based on the outdoor ambient temperature and relative humidity; the defrosting opening adjustment unit adjusts the opening of the throttling device according to the degree of frost on the outdoor heat exchanger, including: when the degree of frost on the outdoor heat exchanger is thin frost, controlling the opening of the throttling device to increase to a first set ratio of the maximum opening; when the degree of frost on the outdoor heat exchanger is medium frost, controlling the opening of the throttling device to increase to a second set ratio of the maximum opening; when the degree of frost on the outdoor heat exchanger is heavy frost, controlling the opening of the throttling device to increase to a third set ratio of the maximum opening; wherein, the first set ratio is less than the second set ratio, and the second set ratio is less than the third set ratio.

[0189] Specifically, the defrosting process during the heating phase also includes adjusting the defrosting opening. A suitable defrosting opening can effectively improve the defrosting rate, reduce defrosting time, and minimize the impact on the indoor ambient temperature. After acquiring the outdoor relative humidity, outdoor ambient temperature, outdoor heat exchanger tube temperature, and continuous operating time, and determining that the preset defrosting conditions are met, a defrosting operation is performed on the outdoor heat exchanger. The degree of frost on the outdoor heat exchanger is determined as thin frost, medium frost, or heavy frost based on the outdoor ambient temperature and relative humidity. More specifically, thin frost, medium frost, and heavy frost are categorized according to temperature and humidity ranges. That is, different combinations of temperature and humidity ranges correspond to different degrees of frost (thin frost, medium frost, and heavy frost). The degree of frost on the outdoor heat exchanger is determined based on the temperature range of the outdoor ambient temperature and the humidity range of the outdoor ambient relative humidity. For example: when the outdoor ambient temperature is -15℃ to 5℃ and the relative humidity is below 65%, it is a light frost; when the outdoor ambient temperature is -5℃ to 11.5℃ and the relative humidity is below 65%, it is a medium frost; when the outdoor ambient temperature is -5℃ to 11.5℃ and the relative humidity is above 65%, it is a heavy frost.

[0190] The defrosting opening adjustment unit adjusts the opening of the throttling device during defrosting: for example, for light frost, the opening of the throttling device is increased to 1 / 2 of the maximum opening; for medium frost, the opening of the throttling device is increased to 2 / 3 of the maximum opening; for heavy frost, the opening of the throttling device is increased to 3 / 4 of the maximum opening.

[0191] After the defrosting operation of the air conditioner is completed, the adjustment unit 130 adjusts the operating opening of the throttling device according to the current exhaust temperature and the target exhaust temperature of the air conditioner. The specific method of the adjustment subunit 132 adjusting the operating opening of the determined throttling device according to the current exhaust temperature and the target exhaust temperature of the air conditioner can be referred to.

[0192] The adjustment subunit 132 is used to adjust the operating opening of the throttling device according to the current exhaust temperature and the target exhaust temperature of the air conditioner.

[0193] In one specific embodiment, the adjustment subunit 132 adjusts the determined operating opening of the throttling device based on the current exhaust temperature and the target exhaust temperature of the air conditioner. Specifically, this adjustment may include: if the current exhaust temperature of the air conditioner is greater than or equal to the target exhaust temperature and less than the sum of the target exhaust temperature and a first preset temperature value, then increasing the operating opening of the throttling device by a first preset value; if the current exhaust temperature of the air conditioner is greater than or equal to the sum of the target exhaust temperature and the first preset temperature value and less than the sum of the target exhaust temperature and a second preset temperature value, then increasing the operating opening of the throttling device by a second preset value; if the current exhaust temperature of the air conditioner is greater than or equal to the sum of the target exhaust temperature and the second preset temperature value and less than the sum of the target exhaust temperature and a third preset temperature value, then increasing the operating opening of the throttling device by a third preset value; if the current exhaust temperature of the air conditioner is greater than or equal to the sum of the target exhaust temperature and the third preset temperature value, then increasing the operating opening of the throttling device to the maximum opening value of the throttling device; and when the current exhaust temperature of the air conditioner is less than the target exhaust temperature, resuming normal opening adjustment.

[0194] For example, the first preset temperature value is 5℃, the second preset temperature value is 8℃, and the third preset temperature value is 10℃;

[0195] If T 目标排气温度 ≤T 排气温度 <T 目标排气温度 At +5℃, increase the opening of the throttling device by 10P;

[0196] If T 目标排气温度 +5℃≤T 排气温度 <T 目标排气温度 At +8℃, increase the opening of the throttling device by 15P;

[0197] If T 目标排气温度 +8℃≤T 排气温度 <T 目标排气温度 +10℃, increase the opening of the throttling device by 20P;

[0198] If T 排气温度 ≥T 目标排气温度 +10℃, open the throttling device to its maximum value; when T 排气温度 <T 目标排气温度 Normal opening adjustment will be restored in time.

[0199] As mentioned above, after obtaining the operating opening P2, the current exhaust temperature (i.e., the actual exhaust temperature) is compared with the target exhaust temperature. If the actual exhaust temperature is greater than the target exhaust temperature, it indicates that the current opening value of the throttling device is too small. To maintain system stability, the opening determined solely by the temperature difference between the outlet air temperature and the set temperature may be too small, requiring further adjustment. Therefore, after obtaining the operating opening P2, to ensure system stability, the opening of the throttling device is increased by a certain value based on the operating opening P2. The determination of the increase in opening value for different target exhaust temperatures and actual exhaust temperatures is based on experimental findings.

[0200] Preferably, the opening degree of the throttling device is adjusted according to the air outlet temperature and the target exhaust temperature of the air conditioner every third preset time interval.

[0201] The present invention also provides a storage medium corresponding to the control method of the throttling device, wherein a computer program is stored thereon, which, when executed by a processor, implements the steps of any of the aforementioned methods.

[0202] The present invention also provides an air conditioner corresponding to the control method of the throttling device, comprising a processor, a memory, and a computer program stored in the memory that can run on the processor, wherein the processor executes the program to implement the steps of any of the aforementioned methods.

[0203] The present invention also provides an air conditioner corresponding to the control device of the throttling device, including the control device of any of the aforementioned throttling devices.

[0204] Accordingly, the solution provided by the present invention, after the air conditioner has been running at the initial opening of the throttling device for a certain period of time, enters the operation opening adjustment stage of the throttling device. The opening of the throttling device is controlled by the outlet air temperature and the target exhaust temperature. There is no need to calculate the superheat, and there is no need to collect the evaporator inlet and outlet temperatures and the suction temperature. This can reduce the number of temperature sensors used and effectively reduce costs.

[0205] The solution provided by this invention calculates the operating opening value of the throttling device based on the temperature difference between the outlet air temperature and the air conditioner set temperature, and then adjusts it based on the difference between the exhaust temperature and the target exhaust temperature. This allows for the selection of a suitable opening while ensuring the stability of the system.

[0206] The solution provided by this invention increases the control of the opening degree of the throttling device during defrosting, improves the defrosting rate, reduces the defrosting time, and reduces the impact of defrosting on the indoor ambient temperature.

[0207] The solution provided by this invention is to first give an initial opening degree when the air conditioner is turned on, and after running for a period of time and having certain operating parameters, determine the initial opening degree of the throttling device, thereby solving the problem of unstable system operation caused by unreasonable selection of the opening degree when the air conditioning system is turned on.

[0208] The solution provided by this invention determines an initial opening base value based on the compressor frequency, indoor ambient temperature, and outdoor ambient temperature, and then corrects it based on the temperature difference between the indoor ambient temperature and the air conditioner's set temperature to obtain a suitable initial opening.

[0209] The solution provided by this invention employs three distinct stages to control the opening of the throttling device: start-up opening control, initial opening control, and outlet air temperature and target exhaust temperature adjustment control. During startup, a given starting opening of the throttling device is established, allowing the air conditioner to operate for a period of time and acquire certain parameters. Then, the initial opening of the throttling device is determined based on the compressor frequency and indoor / outdoor ambient temperatures, enabling the air conditioner to operate at a suitable throttling device opening. Finally, the throttling device is further precisely adjusted based on the outlet air temperature and exhaust temperature, resulting in more accurate opening regulation. This solves the problem of inconsistent opening caused by existing electronic expansion valves that rely solely on intake superheat or exhaust temperature to control the valve opening. The opening can be adjusted based on the actual operating conditions of the air conditioner, precisely controlling the electronic expansion valve's opening and improving system performance and efficiency.

[0210] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored as one or more instructions or codes on or transmitted via a computer-readable medium. Other examples and embodiments are within the scope and spirit of this invention and the appended claims. For example, due to the nature of software, the functions described above can be implemented using software executed by a processor, hardware, firmware, hardwired, or any combination thereof. Furthermore, the functional units can be integrated into a single processing unit, or each unit can exist physically separately, or two or more units can be integrated into a single unit.

[0211] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0212] The units described as separate components may or may not be physically separate. Similarly, the components of the control device may or may not be physical units; they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0213] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to related technologies, or all or 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 the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0214] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A method for controlling a throttling device in an air conditioner, characterized in that, include: After the air conditioner is started, the initial opening degree of the throttling device of the air conditioner is determined, and the air conditioner is controlled to run for a second preset duration based on the determined initial opening degree of the throttling device; After controlling the air conditioner to operate for a second preset time based on the determined initial opening degree of the throttling device, the opening degree of the throttling device is adjusted according to the air outlet temperature and the target exhaust temperature of the air conditioner, including: Based on the second temperature difference between the air outlet temperature and the set temperature of the air conditioner and the initial opening degree, the operating opening degree after adjusting the opening degree of the throttling device is determined. The operating opening of the throttling device is adjusted according to the current exhaust temperature and the target exhaust temperature of the air conditioner. Based on the second temperature difference between the air outlet temperature and the set temperature of the air conditioner, and the initial opening degree, the operating opening degree after adjusting the opening degree of the throttling device is determined, including: When the air conditioner is currently operating in cooling mode or dehumidification mode, If the second temperature difference is greater than or equal to the first preset temperature threshold and less than or equal to the second preset temperature threshold, the throttling device maintains the initial opening unchanged. If the second temperature difference is greater than the second preset temperature threshold, then the operating opening of the throttling device is equal to the initial opening plus the product of the first preset correction parameter and the second temperature difference; If the second temperature difference is less than the first preset temperature threshold, then the operating opening of the throttling device is equal to the initial opening minus the product of the first preset correction parameter and the second temperature difference; When the air conditioner is currently operating in heating mode, If the second temperature difference is greater than or equal to the first preset temperature threshold and less than or equal to the second preset temperature threshold, the throttling device maintains the initial opening unchanged. If the second temperature difference is greater than the second preset temperature threshold, then the operating opening of the throttling device is equal to the initial opening minus the product of the second preset correction parameter and the second temperature difference; If the second temperature difference is less than the first preset temperature threshold, then the operating opening of the throttling device is equal to the initial opening plus the product of the second preset correction parameter and the second temperature difference; Wherein, the first preset temperature threshold is less than the second preset temperature threshold.

2. The method according to claim 1, characterized in that, Also includes: When the air conditioner is started, the throttling device is controlled to open according to a preset start-up opening degree, and the air conditioner is controlled to run for a first preset duration based on the start-up opening degree of the throttling device; After controlling the air conditioner to run for a first preset time based on the start-up opening of the throttling device, the initial opening of the throttling device of the air conditioner is determined, and the air conditioner is controlled to run for a second preset time based on the initial opening of the throttling device.

3. The method according to claim 1 or 2, characterized in that, Determining the initial opening degree of the throttling device of the air conditioner includes: The initial opening degree of the throttling device is determined based on the indoor ambient temperature, the outdoor ambient temperature, the compressor frequency of the air conditioner, and the set temperature of the air conditioner.

4. The method according to claim 3, characterized in that, Determining the initial opening degree of the throttling device based on the indoor ambient temperature, outdoor ambient temperature, the compressor frequency of the air conditioner, and the set temperature of the air conditioner includes: The initial opening value of the throttling device is calculated based on the indoor ambient temperature, the outdoor ambient temperature, and the compressor frequency of the air conditioner. The initial opening value is corrected based on the first temperature difference between the set temperature of the air conditioner and the indoor ambient temperature to obtain the initial opening of the throttling device. And / or, Adjusting the operating opening of the throttling device based on the current exhaust temperature and target exhaust temperature of the air conditioner includes: If the current exhaust temperature of the air conditioner is greater than or equal to the target exhaust temperature, and less than the sum of the target exhaust temperature and the first preset temperature value, then the operating opening of the throttling device will be increased by the first preset opening value. If the current exhaust temperature of the air conditioner is greater than or equal to the sum of the target exhaust temperature and the first preset temperature value, and less than the sum of the target exhaust temperature and the second preset temperature value, then the operating opening of the throttling device will be increased by the second preset opening value. If the current exhaust temperature of the air conditioner is greater than or equal to the sum of the target exhaust temperature and the second preset temperature value, and less than the sum of the target exhaust temperature and the third preset temperature value, then the operating opening of the throttling device will be increased by the third preset opening value. If the current exhaust temperature of the air conditioner is greater than or equal to the sum of the target exhaust temperature and the third preset temperature value, then the operating opening of the throttling device will be increased to the maximum opening value of the throttling device. Wherein, the first preset temperature value is less than the second preset temperature value; the second preset temperature value is less than the third preset temperature value.

5. The control method according to claim 4, characterized in that, Based on the indoor ambient temperature, outdoor ambient temperature, and the compressor frequency of the air conditioner, calculate the initial opening baseline value of the throttling device, including: Based on the indoor ambient temperature, outdoor ambient temperature, and the compressor frequency of the air conditioner, the initial opening base value P1 of the throttling device is calculated using the following formula: P1=a*F 压缩机频率 +b*T 室内环境温度 +c*T 室外环境温度 +d Among them, F 压缩机频率 T is the compressor frequency. 室内环境温度 Indoor ambient temperature, T 室外环境温度 Let be the outdoor ambient temperature, and a, b, c, and d be the fitting parameters; And / or, The initial opening value of the throttling device is obtained by correcting the initial opening value based on the first temperature difference between the set temperature of the air conditioner and the indoor ambient temperature, including: The temperature range in which the first temperature difference is located among two or more preset temperature ranges is determined, wherein each of the two or more preset temperature ranges corresponds to an opening value, and the opening value corresponding to each temperature range is the same or different in cooling or dehumidification mode and in heating mode. The opening value corresponding to the temperature range in which the first temperature difference is located in the two or more preset temperature ranges is determined as the opening correction value for correcting the initial opening base value. Based on the current operating mode of the air conditioner and the determined opening correction value for correcting the initial opening base value, the initial opening base value is corrected to obtain the initial opening of the throttling device. Specifically, when the current operating mode of the air conditioner is cooling mode or dehumidification mode, the initial opening degree of the throttling device is the initial opening degree base value plus the opening degree correction value; when the current operating mode of the air conditioner is heating mode, the initial opening degree of the throttling device is the initial opening degree base value minus the opening degree correction value.

6. The control method according to any one of claims 1-2 and 4-5, characterized in that, Also includes: When the air conditioner is currently operating in heating mode, after controlling the air conditioner to operate based on the initial opening degree of the throttling device, when the air conditioner performs defrosting operation, the opening degree of the throttling device is adjusted according to the degree of frost on the outdoor heat exchanger, wherein: The degree of frost on the outdoor heat exchanger is determined as thin frost, medium frost, or heavy frost based on the outdoor ambient temperature and relative humidity. When the outdoor heat exchanger is covered with a thin layer of frost, the opening of the throttling device is increased to a first set ratio of the maximum opening. When the outdoor heat exchanger is at the medium frost level, the opening of the throttling device is increased to a second set ratio of the maximum opening. When the outdoor heat exchanger is heavily frosted, the opening of the throttling device is increased to a third set ratio of the maximum opening. Wherein, the first set ratio is less than the second set ratio, and the second set ratio is less than the third set ratio; After the air conditioner defrost operation is completed, the operating degree of the throttling device is adjusted according to the current exhaust temperature and the target exhaust temperature of the air conditioner.

7. The control method according to claim 3, characterized in that, Also includes: When the air conditioner is currently operating in heating mode, after controlling the air conditioner to operate based on the initial opening degree of the throttling device, when the air conditioner performs defrosting operation, the opening degree of the throttling device is adjusted according to the degree of frost on the outdoor heat exchanger, wherein: The degree of frost on the outdoor heat exchanger is determined as thin frost, medium frost, or heavy frost based on the outdoor ambient temperature and relative humidity. When the outdoor heat exchanger is covered with a thin layer of frost, the opening of the throttling device is increased to a first set ratio of the maximum opening. When the outdoor heat exchanger is at the medium frost level, the opening of the throttling device is increased to a second set ratio of the maximum opening. When the outdoor heat exchanger is heavily frosted, the opening of the throttling device is increased to a third set ratio of the maximum opening. Wherein, the first set ratio is less than the second set ratio, and the second set ratio is less than the third set ratio; After the air conditioner defrost operation is completed, the operating degree of the throttling device is adjusted according to the current exhaust temperature and the target exhaust temperature of the air conditioner.

8. A control device for a throttling device of an air conditioner, characterized in that, include: A determining unit is used to determine the initial opening degree of the throttling device after the air conditioner is started; The control unit is used to control the air conditioner to operate for a second preset duration based on the initial opening degree of the throttling device determined by the determining unit; An adjustment unit is used to adjust the opening of the throttling device according to the air outlet temperature and the target exhaust temperature of the air conditioner after the control unit controls the air conditioner to run for a second preset time based on the initial opening of the throttling device determined by the determining unit. The adjustment unit includes: a determining subunit, used to determine the operating opening after adjusting the opening of the throttling device based on a second temperature difference between the air outlet temperature of the air conditioner and the set temperature of the air conditioner and the initial opening; and an adjusting subunit, used to adjust the determined operating opening of the throttling device based on the current exhaust temperature and the target exhaust temperature of the air conditioner. The determining subunit determines the operating opening of the throttling device after adjusting its opening based on a second temperature difference between the air outlet temperature and the set temperature of the air conditioner, and the initial opening. This includes: when the air conditioner's current operating mode is cooling mode or dehumidification mode, if the second temperature difference is greater than or equal to a first preset temperature threshold and less than or equal to a second preset temperature threshold, the throttling device maintains its initial opening; if the second temperature difference is greater than the second preset temperature threshold, the operating opening of the throttling device is equal to the initial opening plus the product of a first preset correction parameter and the second temperature difference; if the second temperature difference is less than the first preset temperature threshold, the operating opening of the throttling device is equal to the initial opening plus the product of a first preset correction parameter and the second temperature difference; if the second temperature difference is less than the first preset temperature threshold, the operating opening of the throttling device is equal to the initial opening. The opening degree is reduced by the product of the first preset correction parameter and the second temperature difference. When the current operating mode of the air conditioner is heating mode, if the second temperature difference is greater than or equal to the first preset temperature threshold and less than or equal to the second preset temperature threshold, the throttling device maintains the initial opening degree. If the second temperature difference is greater than the second preset temperature threshold, the operating opening degree of the throttling device is equal to the initial opening degree minus the product of the second preset correction parameter and the second temperature difference. If the second temperature difference is less than the first preset temperature threshold, the operating opening degree of the throttling device is equal to the initial opening degree plus the product of the second preset correction parameter and the second temperature difference. Wherein, the first preset temperature threshold is less than the second preset temperature threshold.

9. The control device according to claim 8, characterized in that, Also includes: The control unit is further configured to: when the air conditioner is started, control the throttling device to open according to a preset start-up degree, and control the air conditioner to run for a first preset duration based on the start-up degree of the throttling device; The determining unit determines the initial opening degree of the throttling device after the control unit controls the air conditioner to operate for a first preset time based on the starting opening degree of the throttling device.

10. A storage medium, characterized in that, It stores a computer program that, when executed by a processor, implements the steps of the method according to any one of claims 1-7.

11. An air conditioner, characterized in that, It includes a processor, a memory, and a computer program stored in the memory that can run on the processor, wherein the processor executes the program to implement the steps of the method of any one of claims 1-7, or includes a control device for a throttling device as described in any one of claims 8-9.

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