Control method of air conditioner, air conditioner and computer readable storage medium

Abstract

The application discloses a control method of an air conditioner, the air conditioner and a computer readable storage medium. The control method of the air conditioner comprises the following steps: running a refrigeration mode; acquiring an outdoor environment temperature and an indoor environment temperature; when the outdoor environment temperature is less than or equal to the indoor environment temperature, adjusting an operation parameter of a target refrigeration component in the air conditioner to at least one of reduce a superheat degree of an indoor heat exchanger, reduce a subcooling degree of an outdoor heat exchanger and increase a pressure difference between an exhaust port and an intake port of a compressor. In this way, when the outdoor environment temperature is less than or equal to the indoor environment temperature, the refrigeration effect of the air conditioner can be effectively improved by reducing the superheat degree of the indoor heat exchanger, reducing the subcooling degree of the outdoor heat exchanger and increasing the pressure difference between the exhaust port and the intake port of the compressor.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to a control method for an air conditioner, an air conditioner, and a computer-readable storage medium. Background Technology

[0002] Existing air conditioners are typically designed for use in summer when outdoor temperatures are high. However, in winter, such as when cooling large computing centers where outdoor temperatures are low, if the air conditioner continues to operate in its conventional cooling mode, which is designed for summer when outdoor temperatures are high, the cooling effect will be reduced compared to when outdoor temperatures are high. Summary of the Invention

[0003] The main objective of this invention is to provide a control method for an air conditioner, an air conditioner, and a computer-readable storage medium, with the aim of improving the cooling effect of the air conditioner.

[0004] To achieve the above objectives, the present invention provides a control method for an air conditioner, the method comprising the following steps:

[0005] Run in cooling mode;

[0006] Obtain outdoor and indoor ambient temperatures;

[0007] When the outdoor ambient temperature is less than or equal to the indoor ambient temperature, the operating parameters of the target refrigeration component in the air conditioner are adjusted to reduce the superheat of the indoor heat exchanger, reduce the subcooling of the outdoor heat exchanger, and increase the pressure difference between the compressor's exhaust port and intake port, at least one of these.

[0008] Optionally, the target refrigeration component includes at least one of an outdoor fan, an indoor fan, and a compressor, and adjusting the operating parameters of the target refrigeration component in the air conditioner includes at least one of the following:

[0009] Reduce the speed of the outdoor fan to reduce the subcooling of the outdoor heat exchanger;

[0010] Reduce the speed of the indoor fan to decrease the superheat of the indoor heat exchanger.

[0011] Increase the operating frequency of the compressor to increase the pressure difference between the compressor's exhaust port and intake port.

[0012] Optionally, the step of adjusting the operating parameters of the target refrigeration component in the air conditioner includes:

[0013] Obtain the set operating parameters, maximum operating parameters, and minimum operating parameters of the target refrigeration component;

[0014] The target operating parameters of the target cooling component are obtained based on the set operating parameters, maximum operating parameters, minimum operating parameters, outdoor ambient temperature, indoor ambient temperature, preset temperature threshold, and preset adjustment coefficient.

[0015] Adjust the operating parameters of the target refrigeration component to the target operating parameters.

[0016] Optionally, the step of obtaining the target operating parameters of the target cooling component based on the set operating parameters, outdoor ambient temperature, indoor ambient temperature, preset temperature threshold, and preset adjustment coefficient includes:

[0017] Obtain the first difference between the set operating parameter and the minimum operating parameter, the second difference between the maximum operating parameter and the minimum operating parameter, and the third difference between the indoor ambient temperature and the outdoor ambient temperature;

[0018] The first product is obtained by multiplying the quotient between the first difference and the second difference by the preset temperature threshold.

[0019] The second product is obtained by multiplying the quotient between the first product and the third difference by a preset adjustment coefficient.

[0020] The target operating parameters are obtained by summing the minimum operating parameters and the second product.

[0021] Optionally, the target refrigeration component includes at least one of an outdoor fan, an indoor fan, and a compressor, and the step of adjusting the operating parameters of the target refrigeration component in the air conditioner includes:

[0022] Reduce the speed of the outdoor fan;

[0023] After the outdoor fan has been running at a reduced speed for a first preset period of time, if the outdoor ambient temperature is less than or equal to the indoor ambient temperature, then the speed of the indoor fan is reduced.

[0024] After the indoor fan has been running at a reduced speed for a second preset period of time, if the outdoor ambient temperature is less than or equal to the indoor ambient temperature, the operating frequency of the compressor is increased.

[0025] After the compressor has been running at the increased operating frequency for a third preset period of time, if the outdoor ambient temperature is less than or equal to the indoor ambient temperature, the process returns to the step of reducing the speed of the outdoor fan until the outdoor ambient temperature is greater than the indoor ambient temperature.

[0026] Optionally, after the step of obtaining the outdoor ambient temperature and the indoor ambient temperature, the method further includes:

[0027] When the outdoor ambient temperature is higher than the indoor ambient temperature, the target cooling component is controlled to operate based on the indoor ambient temperature and the set temperature.

[0028] Optionally, after the step of adjusting the operating parameters of the target refrigeration component in the air conditioner, the method further includes:

[0029] When the outdoor ambient temperature is higher than the indoor ambient temperature, the target cooling component is controlled to maintain its current operating parameters.

[0030] Optionally, after the step of obtaining the outdoor ambient temperature and the indoor ambient temperature, the method includes:

[0031] When the outdoor ambient temperature is less than or equal to the indoor ambient temperature, the difference between the indoor ambient temperature and the outdoor ambient temperature is obtained;

[0032] When the difference is greater than or equal to a preset temperature threshold, the step of adjusting the operating parameters of the target refrigeration component in the air conditioner is performed.

[0033] In addition, to achieve the above objectives, the present invention also provides an air conditioner, the air conditioner including a memory, a processor and an air conditioner control program stored on the processor and executable on the processor, wherein when the processor executes the air conditioner control program, it implements the steps of the air conditioner control method as described above.

[0034] In addition, to achieve the above objectives, the present invention also provides a computer-readable storage medium storing a control program for an air conditioner, wherein the control program for the air conditioner, when executed by a processor, implements the steps of the control method for the air conditioner as described above.

[0035] In this embodiment of the invention, by acquiring the outdoor and indoor ambient temperatures during cooling mode, and adjusting the operating parameters of the target cooling component in the air conditioner when the acquired outdoor ambient temperature is less than or equal to the indoor ambient temperature, at least one of the following can be adjusted: reducing the superheat of the indoor heat exchanger, reducing the subcooling of the outdoor heat exchanger, or increasing the pressure difference between the compressor's exhaust port and intake port. This improves the cooling effect of the air conditioner and prevents poor cooling performance caused by operating in conventional cooling mode when the indoor ambient temperature is higher than the outdoor ambient temperature. In other words, by reducing the superheat of the indoor heat exchanger, reducing the subcooling of the outdoor heat exchanger, or increasing the pressure difference between the compressor's exhaust port and intake port, the cooling effect of the air conditioner can be improved. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the air conditioner structure in the hardware operating environment involved in the embodiments of the present invention;

[0037] Figure 2 This is a flowchart illustrating the first embodiment of the control method for the air conditioner of the present invention;

[0038] Figure 3 This is a flowchart illustrating the second embodiment of the control method for an air conditioner according to the present invention;

[0039] Figure 4 This is a flowchart illustrating the third embodiment of the control method for the air conditioner of the present invention.

[0040] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0041] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0042] The main solution of the present invention is: to run in cooling mode; to obtain the outdoor ambient temperature and the indoor ambient temperature; and when the outdoor ambient temperature is less than or equal to the indoor ambient temperature, to adjust the operating parameters of the target cooling component in the air conditioner to reduce the superheat of the indoor heat exchanger, reduce the subcooling of the outdoor heat exchanger, and increase at least one of the pressure difference between the compressor's exhaust port and intake port.

[0043] Because existing air conditioner cooling modes are typically designed for outdoor temperatures higher than indoor temperatures, operating with cooling parameters suited to conditions where the indoor temperature is higher than the outdoor temperature will result in ineffective cooling even when the air conditioner is running at those parameters. Therefore, the solution provided by this invention aims to improve the cooling performance of air conditioners, enabling them to achieve better cooling even when the indoor temperature is higher than the outdoor temperature.

[0044] Reference Figure 1 , Figure 1 This is a schematic diagram of the air conditioner structure in the hardware operating environment involved in the embodiments of the present invention.

[0045] like Figure 1As shown, the air conditioner may include: a communication bus 1002, a processor 1001 (e.g., a CPU), a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen or an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (e.g., a Wi-Fi interface). The memory 1005 may be high-speed RAM or non-volatile memory, such as a disk drive. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0046] Those skilled in the art will understand that Figure 1 The air conditioner structure shown does not constitute a limitation on the air conditioner and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0047] exist Figure 1 In the air conditioner shown, the network interface 1004 is mainly used to connect to the backend server and communicate data with the backend server; the user interface 1003 is mainly used to connect to the client (user terminal) and communicate data with the client; and the processor 1001 can be used to call the control program of the air conditioner stored in the memory 1005 and execute the relevant steps of the various embodiments of the control method of the air conditioner below.

[0048] Based on the hardware architecture of the air conditioner described above, a first embodiment of the control method for the air conditioner of the present invention is proposed, referring to... Figure 2 In this embodiment, the control method for the air conditioner includes the following steps:

[0049] Step S10: Run the cooling mode;

[0050] When the cooling operation conditions are met, the air conditioner operates in cooling mode. Optionally, the cooling operation conditions for the air conditioner to operate in cooling mode may be: the air conditioner receives a cooling mode activation command; the indoor ambient temperature is higher than the set cooling temperature threshold; the outdoor ambient temperature is higher than the preset cooling temperature threshold; the current time reaches the set cooling time; the indoor humidity is higher than the preset cooling humidity value; or a cooling mode adjustment command is received, etc. Of course, it can also be a combination of two or more of the cooling operation conditions listed above, which can be set according to actual needs and is not specifically limited here.

[0051] Step S20: Obtain the outdoor ambient temperature and the indoor ambient temperature;

[0052] When an air conditioner is turned on in cooling mode, it typically adjusts the operating parameters of its refrigeration components (such as the compressor, indoor heat exchanger, outdoor heat exchanger, indoor fan, and outdoor fan) in real time based on changes in the set temperature and indoor ambient temperature. This is done to maintain the indoor ambient temperature as close as possible to the set temperature, thus meeting the user's cooling needs and achieving a good cooling effect. However, this method of adjusting the air conditioner's refrigeration components based on the set temperature and indoor ambient temperature is generally suitable for situations where the indoor ambient temperature is lower than the outdoor ambient temperature. Since the adjustment method of the air conditioner's refrigeration components' operating parameters is pre-set to correspond to the set temperature and indoor ambient temperature when the indoor ambient temperature is lower than the outdoor ambient temperature, it is suitable for application scenarios where the indoor ambient temperature is higher than the outdoor ambient temperature. If, when the indoor ambient temperature is higher than the outdoor ambient temperature, the air conditioner continues to operate according to the parameters for when the indoor ambient temperature is lower than the outdoor ambient temperature, the refrigerant state inside the air conditioner will be different. In this case, it may not be suitable for the current application scenario, and thus, a good cooling effect may not be achieved.

[0053] Therefore, to improve the cooling effect of air conditioners and enable them to adapt not only to indoor temperatures lower than outdoor temperatures but also to indoor temperatures higher than outdoor temperatures, the air conditioner can first acquire the outdoor and indoor ambient temperatures when operating in cooling mode. This allows for differentiation of different application scenarios based on these temperatures. In this way, the operating parameters of the target cooling components in the air conditioner can be adjusted specifically according to different application scenarios, achieving the same cooling effect in various situations.

[0054] Step S30: When the outdoor ambient temperature is less than or equal to the indoor ambient temperature, adjust the operating parameters of the target refrigeration component in the air conditioner to reduce the superheat of the indoor heat exchanger, reduce the subcooling of the outdoor heat exchanger, and increase the pressure difference between the compressor's exhaust port and intake port.

[0055] After obtaining the outdoor and indoor ambient temperatures, when the indoor ambient temperature is lower than the outdoor ambient temperature, the air conditioner can achieve a good cooling effect by operating according to the parameters of the normal cooling mode. In this case, the target cooling component can be controlled based on the indoor ambient temperature and the set temperature. However, when the outdoor ambient temperature is less than or equal to the indoor ambient temperature, if the air conditioner still operates according to the parameters for when the indoor ambient temperature is lower than the outdoor ambient temperature, then: Firstly, when the outdoor heat exchanger exchanges heat with the outdoor air, its subcooling will increase. The refrigerant at the throttling component of the outdoor heat exchanger will remain in a liquid state, resulting in a lower pressure drop and a reduced refrigerant flow through the throttling valve, thus reducing the cooling effect. Secondly, when the indoor heat exchanger exchanges heat with the indoor air, its superheat will increase. At this time, low-density superheated vapor entering the compressor will reduce the system flow and cause the indoor fan to blow out hot air, further affecting the cooling effect. Thirdly, the pressure difference between the high and low pressure sides of the compressor will be lower, resulting in a reduced refrigerant flow after compression, further affecting the cooling effect. Therefore, when the outdoor ambient temperature is less than or equal to the indoor ambient temperature, it is necessary to adjust the operating parameters of the target refrigeration component in the air conditioner to operate with the operating parameters corresponding to the low-temperature refrigeration mode. This can achieve at least one of the following: reducing the superheat of the indoor heat exchanger, reducing the subcooling of the outdoor heat exchanger, or increasing the pressure difference between the compressor's exhaust port and intake port, in order to improve the refrigeration effect.

[0056] It should be noted that the target cooling component refers to the functional components involved in the air conditioner's operation in cooling mode that affect the air conditioner's cooling effect, such as the indoor heat exchanger, indoor fan, outdoor heat exchanger, outdoor fan, and compressor. The normal cooling mode refers to the cooling mode in which the air conditioner operates when the indoor ambient temperature is lower than the outdoor ambient temperature. In this mode, the operation of the target cooling component is controlled according to the indoor ambient temperature and the set temperature. The low-temperature cooling mode refers to the cooling mode in which the air conditioner operates when the indoor ambient temperature is higher than the outdoor ambient temperature. In this mode, it is necessary to adjust the operating parameters of the target cooling component in the air conditioner to reduce the superheat of the indoor heat exchanger, reduce the subcooling of the outdoor heat exchanger, or increase at least one of the following: the pressure difference between the compressor's exhaust port and intake port.

[0057] Optionally, when the indoor ambient temperature drops below the outdoor ambient temperature, it indicates that the air conditioner's cooling effect has improved. In this case, the target cooling component can be kept running at its current operating parameters without further parameter adjustments to improve the cooling effect.

[0058] In one embodiment, the target refrigeration component includes at least one of an outdoor fan, an indoor fan, and a compressor. The cooling effect of the air conditioner can be improved by adjusting at least one of the following operating parameters: the speed of the outdoor fan, the speed of the outdoor fan, and the frequency of the compressor, thereby reducing the superheat of the indoor heat exchanger, reducing the subcooling of the outdoor heat exchanger, and increasing the pressure difference between the exhaust port and the intake port of the compressor.

[0059] Specific adjustment methods can include: adjusting according to a pre-set priority order of outdoor fan speed, outdoor fan speed, and compressor frequency. For example, first adjust the indoor fan speed. If the outdoor ambient temperature is already higher than the indoor ambient temperature before the indoor fan speed reaches the critical value of its adjustable range, there is no need to further adjust the outdoor fan speed and compressor frequency. If the indoor fan speed has reached the critical value of its adjustable range, but the indoor ambient temperature is still higher than the outdoor ambient temperature, then further adjust the outdoor fan speed. If the outdoor fan speed is already higher than the indoor ambient temperature before reaching the critical value of its adjustable range, there is no need to further adjust the compressor frequency. If the outdoor fan speed has reached the critical value of its adjustable range, but the indoor ambient temperature is still higher than the outdoor ambient temperature, then further adjust the compressor frequency, only if the indoor ambient temperature is lower than the outdoor ambient temperature. Alternatively, one method is to simultaneously adjust the outdoor fan speed, outdoor fan speed, and compressor frequency according to a certain adjustment step size. For example, after reducing the indoor fan speed by a preset indoor unit speed step, reducing the outdoor fan speed by a preset outdoor unit speed step, and increasing the compressor operating frequency by a preset frequency step, if the indoor ambient temperature is lower than the outdoor ambient temperature, no further adjustment will be made; if the outdoor ambient temperature is higher than the indoor ambient temperature, the indoor fan speed will be reduced by a preset indoor unit speed step, the outdoor fan speed will be reduced by a preset outdoor unit speed step, and the compressor operating frequency will be increased by a preset frequency step, until the indoor ambient temperature is lower than the outdoor ambient temperature, etc., without specific limitations here.

[0060] Optionally, the higher the outdoor fan speed, the greater the heat exchange between the outdoor heat exchanger and the cooler outdoor air, resulting in a greater subcooling of the outdoor heat exchanger. Conversely, the lower the outdoor fan speed, the less heat exchange between the outdoor heat exchanger and the outdoor air, resulting in a smaller subcooling of the outdoor heat exchanger. Therefore, to prevent increased subcooling from reducing refrigerant flow and affecting cooling performance, the subcooling of the outdoor heat exchanger can be reduced by decreasing the outdoor fan speed when the indoor ambient temperature is higher than the outdoor ambient temperature. Alternatively, the higher the indoor fan speed, the greater the heat exchange between the indoor heat exchanger and the warmer indoor air, resulting in a greater superheat of the indoor heat exchanger. Conversely, the lower the indoor fan speed, the less heat exchange between the indoor heat exchanger and the indoor air, resulting in a smaller superheat of the indoor heat exchanger. Therefore, to prevent increased subcooling from reducing refrigerant flow and affecting cooling performance, the superheat of the indoor heat exchanger can be reduced by decreasing the indoor fan speed when the indoor ambient temperature is higher than the outdoor ambient temperature. Optionally, the higher the compressor frequency, the greater the pressure difference between the compressor's discharge port and intake port, and consequently the greater the refrigerant flow through the compressor. Conversely, the lower the compressor frequency, the smaller the pressure difference between the compressor's discharge port and intake port, and consequently the smaller the refrigerant flow through the compressor. Therefore, to prevent the pressure difference between the high and low pressure sides of the compressor from decreasing and thus reducing the cooling effect, when the indoor ambient temperature is higher than the outdoor ambient temperature, the pressure difference between the high and low pressure sides of the compressor can be increased by increasing the compressor's operating frequency to improve the cooling effect.

[0061] Optionally, considering the balanced operation of the outdoor fan, indoor fan, and compressor, as well as the reliability of improved cooling effect and electricity costs during the cooling process, when adjusting at least one of the outdoor fan speed, indoor fan speed, and compressor operating frequency, the specific steps can be as follows: First, reduce the outdoor fan speed. After the outdoor fan runs at the reduced speed for a first preset time, confirm whether the indoor ambient temperature is higher than the outdoor ambient temperature. If the outdoor ambient temperature is already higher than the indoor ambient temperature, stop adjusting the indoor fan and compressor; if the indoor ambient temperature is higher than the outdoor ambient temperature, continue to reduce the indoor fan speed. After the indoor fan runs at the reduced speed for a second preset time, if the outdoor ambient temperature is higher than the indoor ambient temperature, stop adjusting the compressor; if the indoor ambient temperature is higher than the outdoor ambient temperature, continue to increase the compressor operating frequency. After the compressor runs at the increased operating frequency for a third preset time, if the outdoor ambient temperature is higher than the indoor ambient temperature, no further adjustment is needed; if the indoor ambient temperature is still higher than the outdoor ambient temperature, return to reducing the outdoor fan speed until the outdoor ambient temperature is higher than the indoor ambient temperature. Optionally, when reducing the speed of the outdoor fan and the indoor fan, and increasing the compressor frequency, a gradual adjustment can be made, such as reducing it in fixed steps or by a certain proportion, etc., without specific limitations here.

[0062] This embodiment operates in cooling mode and acquires both outdoor and indoor ambient temperatures. When the outdoor ambient temperature is less than or equal to the indoor ambient temperature, it can promptly adjust the operating parameters of the target refrigeration components in the air conditioner. This adjustment reduces at least one of the following: lowering the superheat of the indoor heat exchanger, lowering the subcooling of the outdoor heat exchanger, or increasing the pressure difference between the compressor's exhaust and intake ports. This prevents the air conditioner from continuing to operate according to the cooling control logic for when the indoor ambient temperature is higher than the outdoor ambient temperature, which would result in poor cooling performance due to at least one of the following: excessively high superheat of the indoor heat exchanger, excessively high subcooling of the outdoor heat exchanger, or excessively low pressure difference between the high and low pressure sides of the compressor. In other words, by adjusting the operating parameters of the target refrigeration components in the air conditioner—reducing the superheat of the indoor heat exchanger, lowering the subcooling of the outdoor heat exchanger, or increasing the pressure difference between the compressor's exhaust and intake ports—the cooling effect of the air conditioner can be improved, ensuring better cooling performance regardless of whether the indoor or outdoor ambient temperature is higher.

[0063] Based on the above embodiments, a second embodiment of the control method for the air conditioner of the present invention is proposed. (Refer to...) Figure 3 In this embodiment, the control method for the air conditioner includes the following steps:

[0064] Step S10: Run the cooling mode;

[0065] Step S20: Obtain the outdoor ambient temperature and the indoor ambient temperature;

[0066] Step S31: When the outdoor ambient temperature is less than or equal to the indoor ambient temperature, obtain the set operating parameters, maximum operating parameters, and minimum operating parameters of the target cooling component;

[0067] Step S32: Obtain the target operating parameters of the target cooling component based on the set operating parameters, maximum operating parameters, minimum operating parameters, outdoor ambient temperature, indoor ambient temperature, preset temperature threshold, and preset adjustment coefficient;

[0068] Step S33: Adjust the operating parameters of the target refrigeration component to the target operating parameters to reduce the superheat of the indoor heat exchanger, reduce the subcooling of the outdoor heat exchanger, and increase the pressure difference between the compressor's exhaust port and intake port.

[0069] When the indoor ambient temperature is higher than the outdoor ambient temperature, in order to reduce the superheat of the indoor heat exchanger, reduce the subcooling of the outdoor heat exchanger, or increase the pressure difference between the compressor's exhaust port and intake port to improve the air conditioner's cooling effect, it is necessary to adjust the operating parameters of the air conditioner's target refrigeration components. This is to prevent the air conditioner from operating directly with the operating parameters for conditions where the indoor ambient temperature is higher than the outdoor ambient temperature, which would result in poor cooling performance.

[0070] When adjusting the operating parameters of the target refrigeration component of an air conditioner, the specific steps may be as follows: obtain the target operating parameters of the target refrigeration component based on the set operating parameters, maximum operating parameters, minimum operating parameters, outdoor ambient temperature, indoor ambient temperature, preset temperature threshold, and preset adjustment coefficient of the target refrigeration component, and then adjust the operating parameters of the target refrigeration component to the target operating parameters in order to reduce the superheat of the indoor heat exchanger, reduce the subcooling of the outdoor heat exchanger, and increase the pressure difference between the compressor's exhaust port and intake port.

[0071] Optionally, the target operating parameters of the target refrigeration component can be obtained based on the set operating parameters, maximum operating parameters, minimum operating parameters, outdoor ambient temperature, indoor ambient temperature, preset temperature threshold, and preset adjustment coefficient of the target refrigeration component. This can be achieved by first obtaining a first difference between the set operating parameters and the minimum operating parameters, a second difference between the maximum and minimum operating parameters, and a third difference between the indoor and outdoor ambient temperatures. Then, the quotient of the first and second differences is multiplied by the preset temperature threshold to obtain a first product. Next, the quotient of the first and third products is multiplied by the preset adjustment coefficient to obtain a second product. Finally, the minimum operating parameters and the second product are summed to obtain the target operating parameters. Optionally, the target refrigeration component may include at least one of an outdoor fan, an indoor fan, and a compressor. In this case, at least one of the target speed of the outdoor fan, the target speed of the indoor fan, and the target operating frequency of the compressor can be obtained in the manner described above. The preset temperature threshold and preset adjustment coefficient can be set according to the specific application environment and are not specifically limited here.

[0072] For example, when the target cooling component is an outdoor fan, the target rotational speed of the outdoor fan can be calculated using the following formula:

[0073] N 外 =Nmin+(Nnormal-Nmin) / (Nmax–Nmin)*ΔT / (T1-T4)*a

[0074] Where, N 外 Nnormal is the target speed of the outdoor fan; Nmax is the maximum speed of the outdoor fan when running in normal cooling mode; Nmin is the minimum speed of the outdoor fan when running in normal cooling mode; ΔT is the preset temperature threshold; T1 is the indoor ambient temperature; T4 is the outdoor ambient temperature; a is the speed control coefficient (preset adjustment coefficient) of the outdoor fan in low-temperature cooling mode, which determines the speed change gradient of the outdoor fan during low-temperature cooling.

[0075] When the target cooling component is an indoor fan, the target rotational speed of the indoor fan can be calculated using the following formula:

[0076] N 内 =Nmin+(Nnormal-Nmin) / (Nmax–Nmin)*ΔT / (T1-T4)*b

[0077] Where, N 内Nnormal is the target speed of the indoor fan; Nmax is the maximum speed of the indoor fan when running in normal cooling mode; Nmin is the minimum speed of the indoor fan when running in normal cooling mode; ΔT is the preset temperature threshold; T1 is the indoor ambient temperature; T4 is the outdoor ambient temperature; b is the speed control coefficient (preset adjustment coefficient) of the indoor fan in low-temperature cooling mode, which determines the speed change gradient of the indoor fan during low-temperature cooling.

[0078] When the target refrigeration component is a compressor, the target frequency of the compressor is calculated using the following formula:

[0079] F=Fmin+(Fnormal-fmin) / (Fmax–Fmin)*ΔT / (T1-T4)*c

[0080] Where F is the target speed of the compressor; Fnormal is the current set speed of the compressor; Fmax is the maximum speed of the compressor when running in normal cooling mode; Fmin is the minimum speed of the compressor when running in normal cooling mode; ΔT is the preset temperature threshold; T1 is the indoor ambient temperature; T4 is the outdoor ambient temperature; c is the frequency control coefficient (preset adjustment coefficient) of the compressor in low temperature cooling mode, which determines the frequency change gradient of the compressor in anti-direct blowing mode.

[0081] This embodiment obtains the target operating parameters of the target refrigeration component based on the set operating parameters, maximum operating parameters, minimum operating parameters, outdoor ambient temperature, indoor ambient temperature, preset temperature threshold, and preset adjustment coefficient of the target refrigeration component. When the operating parameters of the target refrigeration component are adjusted to the target operating parameters, at least one of the following can be achieved: reducing the superheat of the indoor heat exchanger, reducing the subcooling of the outdoor heat exchanger, and increasing the pressure difference between the compressor's exhaust port and intake port, thereby improving the cooling effect of the air conditioner.

[0082] Based on the above embodiments, a third embodiment of the control method for the air conditioner of the present invention is proposed. (Refer to...) Figure 4 In this embodiment, the control method for the air conditioner includes the following steps:

[0083] Step S10: Run the cooling mode;

[0084] Step S20: Obtain the outdoor ambient temperature and the indoor ambient temperature;

[0085] Step S21: When the outdoor ambient temperature is less than or equal to the indoor ambient temperature, obtain the difference between the indoor ambient temperature and the outdoor ambient temperature;

[0086] Step S22: When the difference is greater than or equal to a preset temperature threshold, adjust the operating parameters of the target refrigeration component in the air conditioner to reduce the superheat of the indoor heat exchanger, reduce the subcooling of the outdoor heat exchanger, and increase the pressure difference between the compressor's exhaust port and intake port.

[0087] When the indoor ambient temperature is higher than the outdoor ambient temperature, if the difference between the indoor and outdoor ambient temperatures is not significant, the air conditioner may be able to achieve the cooling effect by running the normal cooling mode. In this case, it is not necessary to adjust the operating parameters of the target cooling component in the air conditioner to reduce the superheat of the indoor heat exchanger, reduce the subcooling of the outdoor heat exchanger, or increase at least one of the pressure difference between the compressor's exhaust port and intake port in order to improve the cooling effect. In other words, it is not necessary to run the low-temperature cooling mode.

[0088] Therefore, to improve the accuracy of adjusting the operating parameters of the target component, when the indoor ambient temperature is higher than the outdoor ambient temperature, the difference between the indoor and outdoor ambient temperatures can be obtained and compared with a preset temperature threshold. If the difference is less than the preset temperature threshold, it means that running the normal cooling mode can meet the cooling demand, and there is no need to run the low-temperature cooling mode to avoid increasing electricity costs. If the difference is greater than or equal to the preset temperature threshold, it means that running the normal cooling mode can no longer meet the cooling demand, and the low-temperature cooling mode needs to be run. This involves adjusting the operating parameters of the target cooling component in the air conditioner to reduce the superheat of the indoor heat exchanger, reduce the subcooling of the outdoor heat exchanger, or increase the pressure difference between the compressor's exhaust port and intake port, thereby further improving the air conditioner's cooling effect. This ensures that when the indoor ambient temperature is higher than the outdoor ambient temperature, the same cooling effect can be achieved when the outdoor ambient temperature is higher than the indoor ambient temperature.

[0089] In this embodiment, when the outdoor ambient temperature is less than or equal to the indoor ambient temperature and the difference between the indoor and outdoor ambient temperatures is greater than or equal to a preset temperature threshold, the operating parameters of the target refrigeration component in the air conditioner are adjusted to reduce the superheat of the indoor heat exchanger, reduce the subcooling of the outdoor heat exchanger, and increase at least one of the pressure difference between the compressor's exhaust port and intake port. This can improve the accuracy of the operating parameter adjustment of the target refrigeration component and avoid increasing electricity costs by running a low-temperature refrigeration mode when the refrigeration demand can be met by running a conventional refrigeration mode.

[0090] Furthermore, this embodiment of the invention also provides a control device for an air conditioner, the control device for the air conditioner including a memory, a processor, and an air conditioner control program stored on the processor and executable on the processor, wherein when the processor executes the air conditioner control program, it implements the steps of the air conditioner control method described above.

[0091] Furthermore, embodiments of the present invention also provide an air conditioner, the air conditioner including the air conditioner control device as described above, or the air conditioner including a memory, a processor and an air conditioner control program stored on the processor and executable on the processor, wherein the processor executes the air conditioner control program to implement the steps of the air conditioner control method as described above.

[0092] Furthermore, embodiments of the present invention also provide a computer-readable storage medium storing a control program for an air conditioner, wherein the control program for the air conditioner, when executed by a processor, implements the steps of the air conditioner control method described above.

[0093] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0094] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0095] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, television, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0096] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A control method for an air conditioner, characterized in that, The control method for the air conditioner includes the following steps: Run in cooling mode; Obtain outdoor and indoor ambient temperatures; When the outdoor ambient temperature is less than or equal to the indoor ambient temperature, the operating parameters of the target refrigeration component in the air conditioner are adjusted to reduce the superheat of the indoor heat exchanger, reduce the subcooling of the outdoor heat exchanger, and increase at least one of the following: the pressure difference between the compressor's exhaust port and intake port. The step of adjusting the operating parameters of the target refrigeration component in the air conditioner includes: obtaining the set operating parameters, maximum operating parameters, and minimum operating parameters of the target refrigeration component; obtaining the target operating parameters of the target refrigeration component based on the set operating parameters, maximum operating parameters, minimum operating parameters, outdoor ambient temperature, indoor ambient temperature, preset temperature threshold, and preset adjustment coefficient; and adjusting the operating parameters of the target refrigeration component to the target operating parameters. The step of obtaining the target operating parameters of the target cooling component based on the set operating parameters, outdoor ambient temperature, indoor ambient temperature, preset temperature threshold, and preset adjustment coefficient includes: Obtain the first difference between the set operating parameter and the minimum operating parameter, the second difference between the maximum operating parameter and the minimum operating parameter, and the third difference between the indoor ambient temperature and the outdoor ambient temperature; The first product is obtained by multiplying the quotient between the first difference and the second difference by the preset temperature threshold. The second product is obtained by multiplying the quotient between the first product and the third difference by a preset adjustment coefficient. The target operating parameters are obtained by summing the minimum operating parameters and the second product.

2. The control method for an air conditioner as described in claim 1, characterized in that, The target refrigeration component includes at least one of an outdoor fan, an indoor fan, and a compressor, and adjusting the operating parameters of the target refrigeration component in the air conditioner includes at least one of the following: Reduce the speed of the outdoor fan to reduce the subcooling of the outdoor heat exchanger; Reduce the speed of the indoor fan to reduce the superheat of the indoor heat exchanger; Increase the operating frequency of the compressor to increase the pressure difference between the compressor's exhaust port and intake port.

3. The control method for an air conditioner as described in claim 1, characterized in that, The target refrigeration component includes at least one of an outdoor fan, an indoor fan, and a compressor. The step of adjusting the operating parameters of the target refrigeration component in the air conditioner includes: Reduce the speed of the outdoor fan; After the outdoor fan has been running at a reduced speed for a first preset period of time, if the outdoor ambient temperature is less than or equal to the indoor ambient temperature, then the speed of the indoor fan is reduced. After the indoor fan has been running at a reduced speed for a second preset period of time, if the outdoor ambient temperature is less than or equal to the indoor ambient temperature, the operating frequency of the compressor is increased. After the compressor has been running at the increased operating frequency for a third preset period of time, if the outdoor ambient temperature is less than or equal to the indoor ambient temperature, the process returns to the step of reducing the speed of the outdoor fan until the outdoor ambient temperature is greater than the indoor ambient temperature.

4. The control method for an air conditioner as described in claim 1, characterized in that, After the steps of obtaining the outdoor ambient temperature and the indoor ambient temperature, the method further includes: When the outdoor ambient temperature is higher than the indoor ambient temperature, the target cooling component is controlled to operate based on the indoor ambient temperature and the set temperature.

5. The control method for an air conditioner as described in claim 1, characterized in that, After the step of adjusting the operating parameters of the target refrigeration component in the air conditioner, the method further includes: When the outdoor ambient temperature is higher than the indoor ambient temperature, the target cooling component is controlled to maintain its current operating parameters.

6. The control method for an air conditioner as described in claim 1, characterized in that, After the steps of obtaining the outdoor ambient temperature and the indoor ambient temperature, the method includes: When the outdoor ambient temperature is less than or equal to the indoor ambient temperature, the difference between the indoor ambient temperature and the outdoor ambient temperature is obtained; When the difference is greater than or equal to a preset temperature threshold, the step of adjusting the operating parameters of the target refrigeration component in the air conditioner is performed.

7. An air conditioner, characterized in that, The air conditioner includes a memory, a processor, and a control program for the air conditioner stored in the memory and executable on the processor. When the processor executes the control program for the air conditioner, it implements the steps of the control method for the air conditioner according to any one of claims 1-6.

8. A readable storage medium, characterized in that, The readable storage medium stores a control program for an air conditioner, which, when executed by a processor, implements the steps of the control method for an air conditioner as described in any one of claims 1-6.

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