Air conditioner control method and device, storage medium and electronic equipment

Abstract

The invention discloses an air conditioner control method and device, a storage medium and electronic equipment, and relates to the technical field of air conditioners, an air conditioner comprises an outdoor unit, the outdoor unit comprises an outer fan and a motor corresponding to the outer fan, and when it is determined that the air conditioner is in a low-load working condition, the air demand of the outdoor unit is determined; and if the needed air volume is smaller than the preset air volume, the reverse rotation frequency is determined according to the needed air volume. The motor is controlled to drive the outer fan to rotate reversely at the reverse rotation frequency; and when the outer fan rotates reversely to meet the preset forward rotation condition, the motor is controlled to drive the outer fan to be switched from reverse rotation to forward rotation. The operation reliability of the motor, the air regulation response speed and the energy efficiency in the outdoor unit under the low-load working condition can be effectively improved.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, specifically to an air conditioning control method, device, storage medium, and electronic device. Background Technology

[0002] In air conditioners, the outdoor unit's fan is controlled by a variable frequency drive (VFD) motor. Current VFD technology typically has a minimum frequency limit, such as 10Hz or 5Hz. However, under low-load conditions, the required fan speed for the outdoor unit's airflow may require the motor to drive the fan at a frequency lower than the minimum limit. Due to this minimum frequency limitation, the motor may experience issues like loss of synchronization, increased vibration, or overheating of the windings. Some solutions employ mechanical adjustment methods like damper adjustment or variable pitch blades to regulate airflow; however, these require additional mechanical structures, resulting in slow airflow adjustment response and increased energy consumption.

[0003] Therefore, in the existing technology, the air volume regulation method of the outdoor unit's outdoor fan has problems such as poor motor operation reliability, slow air volume regulation response, and high energy consumption under low load conditions. Summary of the Invention

[0004] This application provides an air conditioning control scheme that can effectively improve the reliability of the motor operation, the air volume adjustment response speed, and the energy efficiency of the outdoor unit under low load conditions when controlling the outdoor fan to adjust the air volume.

[0005] The embodiments of this application provide the following technical solutions:

[0006] According to one embodiment of this application, an air conditioning control method is provided. The air conditioner includes an outdoor unit, which includes an outdoor fan and a motor corresponding to the outdoor fan. The method includes: when it is determined that the air conditioner is in a low-load condition, determining the required air volume of the outdoor unit; if the required air volume is less than a preset air volume, determining a reversal frequency based on the required air volume; controlling the motor to drive the outdoor fan to reverse at the reversal frequency; and when the outdoor fan reverses to meet a preset forward rotation condition, controlling the motor to drive the outdoor fan to switch from reverse rotation to forward rotation.

[0007] In some embodiments of this application, controlling the motor to drive the external fan to reverse at the reversing frequency includes: controlling the motor that drives the external fan to rotate forward to stop; and when the motor stops for a preset first time period, controlling the motor to rise from zero frequency to the reversing frequency to drive the external fan to reverse.

[0008] In some embodiments of this application, before determining the required air volume of the outdoor unit when the air conditioner is determined to be in a low-load condition, the method further includes: receiving condensing temperature, ambient temperature, compressor current and preset maximum temperature difference; and determining whether the air conditioner is in the low-load condition based on the condensing temperature, the ambient temperature, the compressor current and the preset maximum temperature difference.

[0009] In some embodiments of this application, determining whether the air conditioner is in the low-load condition based on the condensing temperature, the ambient temperature, the compressor current, and the preset maximum temperature difference includes: calculating the temperature difference between the condensing temperature and the ambient temperature; dividing the temperature difference by the preset maximum temperature difference to obtain a load factor; and determining that the air conditioner is in the low-load condition when the load factor is less than a preset first coefficient and the compressor current is less than a preset current.

[0010] In some embodiments of this application, the step of controlling the motor to switch the external fan from reverse rotation to forward rotation when the external fan reverses to meet the preset forward rotation conditions includes: when the load factor is greater than the preset second factor and continues for a preset second duration, controlling the motor to switch the external fan from reverse rotation to forward rotation.

[0011] In some embodiments of this application, determining the reversing frequency based on the required air volume includes: dividing the required air volume by a preset impeller constant and a preset reversing efficiency coefficient to obtain an estimated frequency; and determining the reversing frequency based on the estimated frequency.

[0012] In some embodiments of this application, determining the reversal frequency based on the estimated frequency includes: comparing the estimated frequency with a preset minimum reversal frequency; and determining the larger of the estimated frequency and the preset minimum reversal frequency as the reversal frequency.

[0013] According to one embodiment of this application, an air conditioning control device is provided. The air conditioner includes an outdoor unit, which includes an outdoor fan and a motor corresponding to the outdoor fan. The device includes: a demand air volume determination module, configured to: determine the demand air volume of the outdoor unit when the air conditioner is determined to be in a low-load condition; a reverse frequency determination module, configured to: determine a reverse frequency based on the demand air volume if the demand air volume is less than a preset air volume; a reverse control module, configured to: control the motor to drive the outdoor fan to reverse at the reverse frequency; and a forward control module, configured to: control the motor to drive the outdoor fan to switch from reverse to forward rotation when the outdoor fan reverses to meet a preset forward rotation condition.

[0014] According to another embodiment of this application, a storage medium stores a computer program thereon, which, when executed by a processor of an electronic device, causes the electronic device to perform the methods described in the embodiments of this application.

[0015] According to another embodiment of this application, an electronic device may include: a memory storing a computer program; and a processor reading the computer program stored in the memory to execute the methods described in the embodiments of this application.

[0016] According to another embodiment of this application, a computer program product or computer program includes computer instructions stored in a computer-readable storage medium. A processor of an electronic device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the electronic device to perform the methods provided in the various optional implementations described in the embodiments of this application.

[0017] In this embodiment, the air conditioner includes an outdoor unit, which includes an outdoor fan and a corresponding motor. When the air conditioner is determined to be in a low-load condition, the required air volume of the outdoor unit is determined. If the required air volume is less than a preset air volume, a reversal frequency is determined based on the required air volume. The motor is controlled to drive the outdoor fan to reverse at the reversal frequency. When the outdoor fan reverses to meet a preset forward rotation condition, the motor is controlled to drive the outdoor fan to switch from reverse rotation to forward rotation.

[0018] In this embodiment of the application, when the air conditioner is under low load and the required air volume of the outdoor unit is less than the preset air volume, the outdoor fan's "reverse-forward" switching and precise coordinated control of the reverse frequency allow the motor in the outdoor unit to smoothly exceed the minimum frequency limit. This enables the motor to eventually smoothly reach a forward rotation frequency lower than the minimum frequency, driving the outdoor fan to achieve the required air volume under low load conditions. When controlling the outdoor fan in the air conditioner's outdoor unit to adjust the air volume, this effectively improves the reliability of the outdoor unit's motor operation, the air volume adjustment response speed, and energy efficiency under low load conditions. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A flowchart of an air conditioning control method according to an embodiment of this application is shown.

[0021] Figure 2A flowchart illustrating the working condition determination process according to an embodiment of this application is shown.

[0022] Figure 3 A flowchart illustrating the inversion control according to an embodiment of this application is shown.

[0023] Figure 4 A block diagram of an air conditioning control device according to an embodiment of this application is shown.

[0024] Figure 5 A block diagram of an electronic device according to an embodiment of this application is shown. Detailed Implementation

[0025] The present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the embodiments provided herein are merely illustrative of the present disclosure and are not intended to limit the present disclosure. Furthermore, the embodiments provided below are some embodiments for implementing the present disclosure, and not all embodiments for implementing the present disclosure. Unless otherwise specified, the technical solutions described in the embodiments of the present disclosure can be implemented in any combination.

[0026] It should be noted that, in the embodiments of this disclosure, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a method or apparatus that includes a list of elements includes not only the elements expressly described, but also other elements not expressly listed, or elements inherent to implementing the method or apparatus. Without further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of other related elements (e.g., steps in the method or units in the apparatus, such as portions of circuitry, processors, programs, or software, etc.) in the method or apparatus that includes that element.

[0027] For example, the air conditioning control method provided in this embodiment includes a series of steps, but the air conditioning control method provided in this embodiment is not limited to the steps described. Similarly, the air conditioning control device provided in this embodiment includes a series of units, but the device provided in this embodiment is not limited to the units explicitly described, but may also include units that need to be set up for obtaining relevant information or processing based on information.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure.

[0029] It is understood that in the specific implementation of this application, relevant data is involved. When the embodiments in this application are applied to specific products or technologies, user permission or consent is required, and the collection, use and processing of relevant data must comply with relevant laws, regulations and standards.

[0030] In air conditioners, the outdoor unit's fan is controlled by a variable frequency drive (VFD) motor. Current VFD technology typically has a minimum frequency limit, such as 10Hz or 5Hz. However, under low-load conditions, the required fan speed for the outdoor unit's airflow may require the motor to drive the fan at a frequency lower than the minimum limit. Due to this minimum frequency limitation, the motor may experience issues like loss of synchronization, increased vibration, or overheating of the windings. Some solutions employ mechanical adjustment methods like damper adjustment or variable pitch blades to regulate airflow; however, these require additional mechanical structures, resulting in slow airflow adjustment response and increased energy consumption.

[0031] Therefore, in the existing technology, the air volume regulation method of the outdoor fan in the outdoor unit of an air conditioner has the problems of poor motor operation reliability, slow air volume regulation response and high energy consumption under low load conditions.

[0032] To address these issues, this application provides an air conditioning control scheme that can effectively improve the reliability of the outdoor unit's motor operation, the air volume adjustment response speed, and energy efficiency under low-load conditions when controlling the outdoor fan in the outdoor unit to adjust the air volume.

[0033] The following is a detailed description of the relevant embodiments of the air conditioning control scheme provided in this application.

[0034] Figure 1 A flowchart illustrating an embodiment of an air conditioning control method according to this application is shown. The entity executing this air conditioning control method may be a control module with processing capabilities. This control module may be installed in electronic devices such as air conditioners, remote controls, wired controllers, mobile phones, computers, smartwatches, and other home appliances, and may include at least a memory and a processor.

[0035] In one embodiment of this application, the control module, which serves as the execution subject of the air conditioning control method, is specifically disposed in the air conditioner. The control module may include a processor and a memory, meaning the air conditioner includes both a processor and a memory, and the memory stores a computer program. Thus, the processor in the air conditioner can read the computer program stored in the memory to execute the methods of the various embodiments of this application. The air conditioner may include an outdoor unit and an indoor unit. The outdoor unit may include an outdoor fan and a motor for driving the outdoor fan to rotate; specifically, the motor may be a variable frequency motor.

[0036] like Figure 1As shown, the air conditioning control method may include steps S110 to S140.

[0037] Step S110: When it is determined that the air conditioner is in a low-load condition, determine the required air volume of the outdoor unit;

[0038] Step S120: If the required air volume is less than the preset air volume, determine the reversal frequency based on the required air volume.

[0039] Step S130: Control the motor to drive the external fan to reverse at the reverse frequency;

[0040] Step S140: When the external fan reverses to meet the preset forward rotation conditions, control the motor to drive the external fan to switch from reverse rotation to forward rotation.

[0041] During the operation of the air conditioner (during which the outdoor fan rotates forward), the operating status of the air conditioner can be monitored in real time. When it is determined that the air conditioner is in a low-load condition, the actual air volume required for heat dissipation of the outdoor unit is determined. The actual air volume required for heat dissipation of the outdoor unit is the required air volume. The required air volume of the outdoor unit under low-load conditions is less than that under non-low-load conditions. Therefore, when the air conditioner enters a low-load condition, the fan speed of the outdoor fan needs to be reduced to reduce the air volume.

[0042] However, due to the minimum frequency limitation of variable frequency speed control technology, the fan speed required by the outdoor unit to meet the air volume demand under low load conditions may require the motor to drive the outdoor fan at a forward rotation frequency lower than the minimum frequency. However, at this time, the motor may experience unreliability problems such as loss of synchronism, increased vibration, or overheating of the windings.

[0043] In the embodiments of this application, instead of directly controlling the motor to drive the forward-rotating outdoor fan to reduce the fan speed, when the air conditioner is in a low-load condition and the required air volume is less than the preset air volume, the corresponding reversal frequency is determined according to the required air volume. Then, the motor is controlled to drive the outdoor fan to reverse at this reversal frequency (that is, the outdoor fan switches from forward rotation to reverse rotation).

[0044] Furthermore, when the outdoor fan reverses to meet the preset forward rotation conditions, the motor is then controlled to switch the outdoor fan from reverse to forward rotation. Because the motor was first controlled to drive the outdoor fan in reverse at the reverse frequency, the motor can smoothly overcome the minimum frequency limit and smoothly switch to a forward rotation frequency lower than the minimum frequency (i.e., the forward rotation frequency that matches the required airflow of the outdoor unit under low load conditions) to drive the outdoor fan to achieve the required airflow. This effectively avoids unreliable problems such as loss of synchronization, increased vibration, or overheating of windings that occur when directly controlling the motor to switch to a forward rotation frequency lower than the minimum frequency to drive the outdoor fan to forward rotation. In addition, this control process does not require additional mechanical structures; it can be achieved simply by controlling the operation mode of the motor, resulting in faster airflow adjustment response and lower energy consumption.

[0045] In summary, using the method described in this embodiment, when the air conditioner is under low load and the outdoor unit's required airflow is less than the preset airflow, the outdoor fan's "reverse-forward" switching and precise coordinated control of the reverse frequency allow the outdoor unit's motor to smoothly exceed the minimum frequency limit. This enables the motor to eventually smoothly drive the outdoor fan at a forward frequency lower than the minimum limit to achieve the required airflow under low load conditions. When controlling the outdoor fan's airflow adjustment, this effectively improves the reliability of the outdoor unit's motor operation, the airflow adjustment response speed, and energy efficiency under low load conditions.

[0046] The following description Figure 1 Further optional specific embodiments are provided for each step performed when controlling the air conditioner in the example implementation.

[0047] In one embodiment, before determining the required air volume of the outdoor unit when the air conditioner is determined to be in a low-load condition, the method may further include: receiving the condensing temperature, ambient temperature, compressor current, and a preset maximum temperature difference; and determining whether the air conditioner is in a low-load condition based on the condensing temperature, ambient temperature, compressor current, and preset maximum temperature difference.

[0048] Temperature sensors installed at locations such as the condenser outlet can receive the condensing temperature in real time. A preset ambient temperature sensor can receive the ambient temperature in real time. The compressor current (i.e., compressor drive current) can be detected in real time via the compressor driver or controller. The preset maximum temperature difference is the maximum temperature difference between the designed condensing temperature and the ambient temperature. By combining the condensing temperature, ambient temperature, compressor current, and preset maximum temperature difference, it is possible to accurately determine whether the air conditioner is operating under low load conditions.

[0049] See Figure 2 In one embodiment, determining whether the air conditioner is in a low-load condition based on the condensing temperature, ambient temperature, compressor current, and a preset maximum temperature difference may include: step S210, calculating the temperature difference between the condensing temperature and the ambient temperature; step S220, dividing the temperature difference by the preset maximum temperature difference to obtain the load factor; and step S230, determining that the air conditioner is in a low-load condition when the load factor is less than a preset first factor and the compressor current is less than a preset current.

[0050] Specifically, the load factor β can be calculated using the formula β=(T_cond-T_env) / ΔT_max, where T_cond is the condensing temperature, T_env is the ambient temperature, T_cond-T_env is the temperature difference between the condensing temperature and the ambient temperature, ΔT_max is the preset maximum temperature difference (i.e., the design maximum temperature difference), and (T_cond-T_env) / ΔT_max is the temperature difference divided by the preset maximum temperature difference.

[0051] Furthermore, when β < preset first coefficient and compressor current < preset current, the air conditioner is determined to be in a low-load condition. After determining that the air conditioner is in a low-load condition in this embodiment, the steps in the relevant embodiments of this application are executed to control the motor to drive the outdoor fan, which can further effectively improve the reliability of the motor operation in the outdoor unit under low-load conditions.

[0052] The preset first coefficient and preset current can be limited according to actual conditions, and this application does not make specific limitations on them. For example, in one example, the preset first coefficient can be equal to 0.4, and the preset current can be equal to 60% of the rated compressor current.

[0053] Optionally, in other embodiments, before determining the required air volume of the outdoor unit when the air conditioner is determined to be in a low-load condition, the method may further include: determining that the air conditioner is in a low-load condition when the condensing temperature is lower than a preset condensing temperature threshold; or, when the air conditioner includes multiple indoor units, determining that the air conditioner is in a low-load condition when some of the indoor units are turned off; or, determining that the air conditioner is in a low-load condition when the ambient temperature is lower than a preset ambient temperature threshold.

[0054] In some embodiments, determining the required air volume of the outdoor unit may include: querying the required air volume matching the relevant parameters of the outdoor unit from a preset air volume lookup table, wherein the relevant parameters of the outdoor unit may include, but are not limited to, parameters related to heat dissipation such as condensation temperature and ambient temperature, and the preset air volume lookup table may include the required air volume matching the outdoor unit under different relevant parameters of the outdoor unit.

[0055] Optionally, in some other embodiments, determining the required air volume of the outdoor unit may include: using a preset calculation function to calculate and process the relevant parameters of the outdoor unit to obtain the required air volume of the outdoor unit. Alternatively, in some other embodiments, determining the required air volume of the outdoor unit may include: using a preset large model to analyze and process the relevant parameters of the outdoor unit to obtain the required air volume of the outdoor unit.

[0056] In one embodiment, determining the reversing frequency based on the required air volume may include: dividing the required air volume by a preset impeller constant and a preset reversing efficiency coefficient to obtain an estimated frequency; and determining the reversing frequency based on the estimated frequency.

[0057] The preset impeller constant is a constant set in advance based on the impeller of the external fan, and the preset reverse efficiency coefficient is a coefficient set in advance for the air blowing efficiency when the external fan reverses. The estimated frequency f_d can be calculated using the formula f_d=Q_target / (K×η_rev), where K is the preset impeller constant, η_rev is the preset reverse efficiency coefficient, and Q_target is the required air volume.

[0058] Furthermore, in some embodiments, when determining the reversal frequency based on the estimated frequency, the estimated frequency can be determined as the reversal frequency. The motor first drives the external fan to reverse at the reversal frequency, which can effectively ensure that the motor can further and smoothly break through the minimum frequency limit and switch to drive the external fan to rotate forward at a forward frequency lower than the minimum frequency.

[0059] In another embodiment, determining the reversal frequency based on the estimated frequency may include: comparing the estimated frequency with a preset minimum reversal frequency; and determining the larger of the estimated frequency and the preset minimum frequency as the reversal frequency.

[0060] In this embodiment, the estimated frequency and the preset minimum reversal frequency are further compared, and the larger of the estimated frequency and the preset minimum frequency is determined as the reversal frequency f_rev, which can further reliably avoid abnormal reversals. Specifically, the larger of the estimated frequency f_d and the preset minimum reversal frequency f_min can be determined as the reversal frequency f_rev according to the formula f_rev = max(f_min, f_d).

[0061] See Figure 3 In one embodiment, controlling the motor to drive the external fan to reverse at a reversing frequency may include: step S310, controlling the motor that drives the external fan to rotate forward to stop; step S320, when the motor stops for a preset first time period, controlling the motor to rise from zero frequency to reverse frequency to drive the external fan to reverse.

[0062] During normal operation of the air conditioner, the motor drives the outdoor fan to rotate forward. When it is determined that the motor needs to be controlled to drive the outdoor fan to rotate in reverse at a reverse frequency, the motor driving the outdoor fan to rotate forward is first stopped. After the motor has been stopped for a preset first time, the motor is then controlled to linearly increase from zero frequency to the determined reverse frequency, thereby driving the outdoor fan to rotate in reverse. In this way, when the outdoor fan switches from forward to reverse, the motor stops for a preset first time before starting in reverse, which can effectively avoid current surges in the motor.

[0063] Furthermore, in one embodiment, when the external fan reverses to meet the preset forward rotation conditions, controlling the motor to drive the external fan to switch from reverse rotation to forward rotation includes: when the load factor is greater than a preset second factor and continues for a preset second duration, controlling the motor to drive the external fan to switch from reverse rotation to forward rotation.

[0064] After the control motor drives the outdoor fan to reverse at the reverse frequency, the load factor can be continuously calculated based on the real-time condensing temperature and ambient temperature (calculate the temperature difference between the condensing temperature and the ambient temperature; divide the temperature difference by the preset maximum temperature difference to obtain the load factor). When the load factor is found to be greater than the preset second factor and lasts for the preset second duration after the control motor drives the outdoor fan to reverse at the reverse frequency, it is determined that the outdoor fan has reversed to meet the preset forward rotation condition. At this time, the control motor drives the outdoor fan to switch from reverse rotation to forward rotation, which can reliably avoid frequent switching between reverse and forward rotation.

[0065] The preset second coefficient and preset second duration can be set according to the actual situation. This application does not make specific limitations. The preset second coefficient can be greater than the preset first coefficient. For example, in one example, the preset second coefficient is 0.5 and the preset second duration is 30 seconds.

[0066] To facilitate better implementation of the air conditioning control method provided in this application, this application also provides an air conditioning control device based on the above-described air conditioning control method. The meanings of the terms used are the same as in the above-described air conditioning control method, and specific implementation details can be found in the descriptions within the method embodiments. Figure 4 A block diagram of an air conditioning control device according to an embodiment of this application is shown.

[0067] The air conditioner includes an outdoor unit, which includes an outdoor fan and a corresponding motor for the outdoor fan. Figure 4 As shown, the air conditioning control device 400 may include: a required air volume determination module 410, which can be used to: determine the required air volume of the outdoor unit when the air conditioner is determined to be in a low load condition; a reverse frequency determination module 420, which can be used to: determine the reverse frequency according to the required air volume if the required air volume is less than the preset air volume; a reverse control module 430, which can be used to: control the motor to drive the outdoor fan to reverse at the reverse frequency; and a forward control module 440, which can be used to: control the motor to drive the outdoor fan to switch from reverse to forward rotation when the outdoor fan reverses to meet the preset forward rotation conditions.

[0068] In some embodiments of this application, the reversal control module 430 can be used to: control the motor that drives the external fan to rotate forward to stop; when the motor stops for a preset first time period, control the motor to rise from zero frequency to the reversal frequency to drive the external fan to rotate in reverse.

[0069] In some embodiments of this application, before determining the required air volume of the outdoor unit when the air conditioner is determined to be in a low-load condition, the device further includes a condition judgment module for: receiving condensing temperature, ambient temperature, compressor current and preset maximum temperature difference; and determining whether the air conditioner is in the low-load condition based on the condensing temperature, the ambient temperature, the compressor current and the preset maximum temperature difference.

[0070] In some embodiments of this application, the operating condition judgment module is used to: calculate the temperature difference between the condensing temperature and the ambient temperature; divide the temperature difference by the preset maximum temperature difference to obtain the load factor; and determine that the air conditioner is in the low load condition when the load factor is less than the preset first coefficient and the compressor current is less than the preset current.

[0071] In some embodiments of this application, the forward rotation control module 440 can be used to: control the motor to drive the external fan to switch from reverse rotation to forward rotation when the load coefficient is greater than the preset second coefficient and continues for a preset second duration.

[0072] In some embodiments of this application, the reversal frequency determination module 420 can be used to: divide the required air volume by a preset impeller constant and a preset reversal efficiency coefficient to obtain an estimated frequency; and determine the reversal frequency based on the estimated frequency.

[0073] In some embodiments of this application, the reversal frequency determination module 420 can be used to: compare the estimated frequency with a preset minimum reversal frequency; and determine the larger of the estimated frequency and the preset minimum reversal frequency as the reversal frequency.

[0074] It should be noted that although several modules or units for the device used to perform actions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to the embodiments of this application, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

[0075] Furthermore, embodiments of this application also provide an electronic device, such as... Figure 5 As shown, Figure 5 A block diagram of an electronic device according to an embodiment of this application is shown, specifically:

[0076] The electronic device may include components such as a processor 501 with one or more processing cores, a memory 502 with one or more computer-readable storage media, a power supply 503, and an input unit 504. Those skilled in the art will understand that... Figure 5The electronic device structure shown does not constitute a limitation on the electronic device and may include more or fewer components than shown, or combine certain components, or have different component arrangements. Wherein:

[0077] The processor 501 is the control center of the electronic device, connecting various parts of the computer device via various interfaces and lines. It executes software programs and / or modules stored in the memory 502, and calls data stored in the memory 502, to perform various functions of the computer device and process data. Optionally, the processor 501 may include one or more processing cores; preferably, the processor 501 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user page, and application programs, and the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 501.

[0078] The memory 502 can be used to store software programs and modules. The processor 501 executes various functional applications and data processing by running the software programs and modules stored in the memory 502. The memory 502 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, application programs required for at least one function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created according to the use of the electronic device, etc. In addition, the memory 502 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 502 may also include a memory controller to provide the processor 501 with access to the memory 502.

[0079] The electronic device also includes a power supply 503 that supplies power to various components. Preferably, the power supply 503 can be logically connected to the processor 501 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The power supply 503 may also include one or more DC or AC power supplies, recharging systems, power fault detection circuits, power converters or inverters, power status indicators, and other arbitrary components.

[0080] The electronic device may also include an input unit 504, which can be used to receive input digital or character information and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control.

[0081] Although not shown, the electronic device may also include a display unit, etc., which will not be described in detail here. Specifically, in this embodiment, the processor 501 in the electronic device can load the executable files corresponding to the processes of one or more computer programs into the memory 502 according to the following instructions, and the processor 501 runs the computer programs stored in the memory 502, thereby realizing the various functions in the foregoing embodiments of this application.

[0082] For example, processor 501 can execute the following: when it is determined that the air conditioner is in a low-load condition, determine the required air volume of the outdoor unit; if the required air volume is less than the preset air volume, determine the reversal frequency based on the required air volume; control the motor to drive the outdoor fan to reverse at the reversal frequency; when the outdoor fan reverses to meet the preset forward rotation conditions, control the motor to drive the outdoor fan to switch from reverse rotation to forward rotation.

[0083] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be performed by a computer program, or by a computer program controlling related hardware. The computer program can be stored in a computer-readable storage medium and loaded and executed by a processor.

[0084] Therefore, embodiments of this application also provide a storage medium storing a computer program that can be loaded by a processor to execute the steps in any of the methods provided in embodiments of this application.

[0085] The storage medium can be a computer-readable storage medium, which may include: read-only memory (ROM), random access memory (RAM), disk or optical disk, etc.

[0086] Since the computer program stored in the storage medium can execute the steps of any of the methods provided in the embodiments of this application, the beneficial effects that the methods provided in the embodiments of this application can achieve can be realized. For details, please refer to the previous embodiments, which will not be repeated here.

[0087] According to another embodiment of this application, a computer program product or computer program includes computer instructions stored in a computer-readable storage medium. A processor of an electronic device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the electronic device to perform the methods provided in the various optional implementations described in the embodiments of this application.

[0088] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein.

[0089] It should be understood that this application is not limited to the embodiments described above and shown in the accompanying drawings, but various modifications and changes can be made without departing from its scope.

Claims

1. An air conditioning control method, characterized in that, The air conditioner includes an outdoor unit, the outdoor unit includes an outdoor fan and a motor corresponding to the outdoor fan, and the method includes: When it is determined that the air conditioner is in a low-load condition, the required air volume of the outdoor unit is determined; If the required air volume is less than the preset air volume, the reversal frequency is determined based on the required air volume; Control the motor to drive the external fan in reverse at the reverse frequency; When the external fan reverses to meet the preset forward rotation conditions, the motor is controlled to drive the external fan to switch from reverse rotation to forward rotation.

2. The method according to claim 1, characterized in that, The control of the motor to drive the external fan to reverse at the reverse frequency includes: The motor that drives the external fan to rotate forward is stopped; When the motor stops for a preset first time, the motor is controlled to increase from zero frequency to the reverse frequency to drive the external fan to reverse.

3. The method according to claim 1, characterized in that, Before determining the required air volume of the outdoor unit when the air conditioner is determined to be in a low-load operating condition, the method further includes: Receives condensing temperature, ambient temperature, compressor current, and preset maximum temperature difference; Based on the condensing temperature, the ambient temperature, the compressor current, and the preset maximum temperature difference, determine whether the air conditioner is in the low-load condition.

4. The method according to claim 3, characterized in that, The step of determining whether the air conditioner is in the low-load condition based on the condensing temperature, the ambient temperature, the compressor current, and the preset maximum temperature difference includes: Calculate the temperature difference between the condensation temperature and the ambient temperature; Divide the temperature difference by the preset maximum temperature difference to obtain the load factor; When the load factor is less than the preset first factor and the compressor current is less than the preset current, the air conditioner is determined to be in the low load condition.

5. The method according to claim 4, characterized in that, When the external fan reverses to meet the preset forward rotation conditions, controlling the motor to drive the external fan to switch from reverse rotation to forward rotation includes: When the load factor is greater than a preset second factor and continues for a preset second duration, the motor is controlled to drive the external fan to switch from reverse rotation to forward rotation.

6. The method according to claim 1, characterized in that, The step of determining the reversal frequency based on the required air volume includes: Divide the required air volume by the preset impeller constant and the preset reverse efficiency coefficient to obtain the estimated frequency; The reversal frequency is determined based on the estimated frequency.

7. The method according to claim 6, characterized in that, Determining the reversal frequency based on the estimated frequency includes: Compare the estimated frequency with the preset minimum reversal frequency; The larger of the estimated frequency and the preset minimum reversal frequency is determined as the reversal frequency.

8. An air conditioning control device, characterized in that, The air conditioner includes an outdoor unit, the outdoor unit includes an outdoor fan and a motor corresponding to the outdoor fan, and the device includes: The air volume demand determination module is used to: determine the air volume demand of the outdoor unit when it is determined that the air conditioner is in a low load condition; The reversal frequency determination module is used to: determine the reversal frequency based on the required air volume if the required air volume is less than the preset air volume; A reversal control module is used to: control the motor to drive the external fan in reverse at the reversal frequency; The forward rotation control module is used to control the motor to switch the external fan from reverse rotation to forward rotation when the external fan reverses to meet the preset forward rotation conditions.

9. A storage medium, characterized in that, It stores a computer program that, when executed by the processor of the electronic device, causes the electronic device to perform the method described in any one of claims 1 to 7.

10. An electronic device, characterized in that, include: Memory, which stores computer programs; A processor reads a computer program stored in memory to perform the method described in any one of claims 1 to 7.

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