Control method and control device of air conditioner and air conditioner

Abstract

The invention provides a control method and device of an air conditioner and the air conditioner. The control method comprises the steps that when it is determined that the air conditioner is started and operates stably, the outdoor environment temperature is obtained; when the outdoor environment temperature is smaller than or equal to the first set temperature, the air conditioner is controlled to enter a low-temperature refrigeration mode; and in the low-temperature refrigeration mode, working parameters of the air conditioner are adjusted according to the outdoor environment temperature. According to the control method and device of the air conditioner and the air conditioner, through specific control logic, the air conditioner can still keep effective refrigeration performance in the low-temperature environment (such as 12 DEG C or below and even-25 DEG C), the problem that the refrigeration effect of a traditional air conditioner system is poor under the low-temperature condition is remarkably solved, and the air conditioner is suitable for being popularized and applied. And the refrigeration requirement of a user in a cold environment is met.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical appliances, and in particular to a control method and a control device of an air conditioner and an air conditioner. Background Art

[0002] In the related art, the cooling efficiency of air conditioners usually decreases under low temperature conditions because the circulation of refrigerant and the working efficiency of the compressor are affected by low temperatures. This may result in poor cooling effect and fail to meet the user's comfort requirements.

[0003] Conventional air conditioning control methods aren't optimized for low-temperature environments. Consequently, air conditioners may not function properly or provide suboptimal cooling performance in ambient temperatures below 12°C. This is particularly true in cold winters or when specific temperature control is required. Therefore, achieving an air conditioning operation mode that provides both effective cooling and energy savings in low-temperature environments remains a challenge facing existing technologies. Summary of the Invention

[0004] The present invention provides a control method, a control device and an air conditioner for an air conditioner, which are used to solve the defects existing in the prior art and achieve the following technical effects: through specific control logic, the air conditioner can still maintain effective cooling performance in a low-temperature environment (such as below 12°C, or even -25°C), significantly improving the problem of poor cooling effect of traditional air-conditioning systems under low-temperature conditions, and meeting the cooling needs of users in cold environments.

[0005] A method for controlling an air conditioner according to a first embodiment of the present invention includes:

[0006] Determining that the air conditioner is turned on and operating stably, obtaining the outdoor ambient temperature;

[0007] According to the outdoor ambient temperature being less than or equal to a first set temperature, controlling the air conditioner to enter a low-temperature cooling mode;

[0008] In the low-temperature cooling mode, the operating parameters of the air conditioner are adjusted according to the outdoor ambient temperature.

[0009] According to one embodiment of the present invention, the step of adjusting the operating parameters of the air conditioner according to the outdoor ambient temperature in the low-temperature cooling mode specifically includes:

[0010] In the low-temperature cooling mode, the rotation speed of the outdoor fan of the air conditioner is controlled and adjusted according to the range of the outdoor ambient temperature.

[0011] In this way, by adjusting the speed of the outdoor fan, the air conditioner can better control the flow of refrigerant and the heat exchange process.

[0012] According to one embodiment of the present invention, the step of controlling and adjusting the rotation speed of the outdoor fan of the air conditioner according to the range of the outdoor ambient temperature specifically includes:

[0013] Determining that the outdoor ambient temperature is within a first temperature range, controlling the speed of the outdoor fan to be adjusted to a first set speed;

[0014] Determining that the outdoor ambient temperature is within a second temperature range, controlling the speed of the outdoor fan to be adjusted to a second set speed;

[0015] Determining that the outdoor ambient temperature is within a third temperature range, controlling the speed of the outdoor fan to be adjusted to a third set speed;

[0016] The maximum value of the first temperature range is less than or equal to the first set temperature, the first temperature range is greater than the second temperature range, the second temperature range is greater than the third temperature range, and the first set speed is greater than the second set speed, and the second set speed is greater than the third set speed.

[0017] According to one embodiment of the present invention, the step of adjusting the operating parameters of the air conditioner according to the outdoor ambient temperature in the low-temperature cooling mode specifically includes:

[0018] In the low-temperature cooling mode, determining a target air outlet temperature of the air conditioner according to the range of the outdoor ambient temperature;

[0019] The air outlet temperature of the air conditioner is adjusted to the target air outlet temperature.

[0020] In this way, by dynamically adjusting the target air outlet temperature of the air conditioner according to the outdoor ambient temperature and adjusting its actual temperature to the target value, precise control of the cooling performance of the air conditioner in a low temperature environment is achieved.

[0021] According to one embodiment of the present invention, the step of determining the target air outlet temperature of the air conditioner according to the range of the outdoor ambient temperature specifically includes:

[0022] Determining that the outdoor ambient temperature is within a first temperature range, obtaining a target air outlet temperature of the air conditioner as a first air outlet temperature;

[0023] Determining that the outdoor ambient temperature is within a second temperature range, obtaining the target air outlet temperature of the air conditioner as the second air outlet temperature;

[0024] Determining that the outdoor ambient temperature is within a third temperature range, obtaining a target air outlet temperature of the air conditioner as the third air outlet temperature;

[0025] The maximum value of the first temperature range is less than or equal to the first set temperature, the first temperature range is greater than the second temperature range, the second temperature range is greater than the third temperature range, and the first exhalation temperature is greater than the second exhalation temperature, and the second exhalation temperature is greater than the third exhalation temperature.

[0026] According to one embodiment of the present invention, the step of adjusting the air outlet temperature of the air conditioner to the target air outlet temperature specifically includes:

[0027] The opening of the electronic expansion valve in the air conditioner is adjusted according to the target air outlet temperature, so that the air outlet temperature of the air conditioner is adjusted to the target air outlet temperature.

[0028] In this way, by precisely controlling the opening of the electronic expansion valve, the air conditioner can optimize the refrigeration cycle under different outdoor ambient temperatures, improve cooling efficiency, and maintain system stability and reliability.

[0029] According to one embodiment of the present invention, after the step of controlling the air conditioner to enter the low-temperature cooling mode, the method further includes:

[0030] In the low-temperature cooling mode, the target operating frequency of the compressor in the air conditioner is set to the maximum operating frequency, and the actual operating frequency of the compressor is controlled to always be higher than the minimum operating frequency.

[0031] This allows the compressor to operate at peak efficiency to meet cooling demands in low-temperature environments and helps prevent the compressor from operating at too low a frequency, which could result in insufficient cooling or reduced system efficiency.

[0032] According to one embodiment of the present invention, after the step of controlling the air conditioner to enter the low-temperature cooling mode, the method further includes:

[0033] In the low-temperature cooling mode, obtaining the outdoor coil temperature of the air conditioner outdoor unit;

[0034] The outdoor fan of the air conditioner is started and stopped according to the temperature of the outdoor unit coil.

[0035] According to one embodiment of the present invention, the step of controlling the start and stop of the outdoor fan of the air conditioner according to the outdoor unit coil temperature specifically includes:

[0036] Determining that the outdoor unit coil temperature is continuously lower than the minimum coil temperature within a first set time period, then controlling the outdoor fan to stop;

[0037] If it is determined that the outdoor unit coil temperature is higher than the minimum coil temperature and the outdoor fan is currently stopped, the outdoor fan is controlled to be restarted.

[0038] In this way, through this coil temperature-based outdoor fan start-stop control method, the air conditioner can operate more intelligently and efficiently in low-temperature cooling mode.

[0039] According to a second aspect of the present invention, a control device for an air conditioner includes:

[0040] an acquisition module, configured to determine that the air conditioner is turned on and is operating stably, and then acquire the outdoor ambient temperature;

[0041] a first control module, configured to control the air conditioner to enter a low-temperature cooling mode according to the outdoor ambient temperature being less than or equal to a first set temperature;

[0042] The second control module is configured to adjust the operating parameters of the air conditioner according to the outdoor ambient temperature in the low-temperature cooling mode.

[0043] According to an embodiment of the third aspect of the present invention, an air conditioner includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the air conditioner control method as described in the embodiment of the first aspect of the present invention is implemented.

[0044] This invention provides a control method, device, and air conditioner. Through specific control logic, the air conditioner maintains effective cooling performance even in low-temperature environments (e.g., below 12°C, or even -25°C). This significantly improves the poor cooling performance of traditional air conditioning systems at low temperatures, meeting users' cooling needs in cold environments.

[0045] Furthermore, the present invention optimizes the air conditioner's cooling performance by fine-tuning key operating parameters such as the compressor frequency, external fan speed, and electronic expansion valve. This optimization not only improves cooling efficiency but also potentially helps extend the life of the equipment.

[0046] In addition, while ensuring the cooling effect, the present invention also takes energy-saving performance into consideration. By accurately controlling the working state of the air conditioner, unnecessary energy consumption can be reduced, thereby improving the energy efficiency ratio, which means lower operating costs for users.

[0047] It should also be noted that this invention significantly improves user comfort by ensuring stable cooling even in low-temperature environments. Users no longer need to worry about their air conditioner malfunctioning in cold environments, thereby increasing user satisfaction. Furthermore, the control method of this invention is applicable to a variety of low-temperature environments, providing an effective cooling solution for both cold winter outdoor environments and indoor spaces requiring specific temperature control. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0049] Figure 1 1 is a flow chart of a method for controlling an air conditioner provided by the present invention;

[0050] Figure 2 1 is a schematic structural diagram of a control device for an air conditioner provided by the present invention;

[0051] Figure 3 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0052] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0053] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0054] The following describes the control method, control device, and air conditioner of the air conditioner proposed by the present invention with reference to the accompanying drawings. Before describing the embodiments of the present invention in detail, the entire application scenario is described first. The control method, control device, electronic device, and computer-readable storage medium of the air conditioner of the embodiment of the present invention can be applied locally to the air conditioner, can be applied to a cloud platform in the Internet field, or other types of cloud platforms in the Internet field, or can also be applied to third-party devices. Among them, third-party devices may include various types such as mobile phones, tablet computers, notebooks, car computers, and other smart terminals.

[0055] The following description only takes the control method applicable to an air conditioner as an example. It should be understood that the control method of the embodiment of the present invention can also be applied to a cloud platform and third-party devices.

[0056] It should also be noted that the control method for the air conditioner proposed in the present invention is targeted, that is, the method is mainly targeted at the case where the air conditioner performs cooling in a low-temperature environment.

[0057] like Figure 1 As shown, the control method of the air conditioner according to the first embodiment of the present invention includes:

[0058] Step S1, determining that the air conditioner is turned on and running stably, then obtaining the outdoor ambient temperature;

[0059] Step S2, controlling the air conditioner to enter a low-temperature cooling mode according to the outdoor ambient temperature being less than or equal to a first set temperature;

[0060] Step S3: In the low-temperature cooling mode, the operating parameters of the air conditioner are adjusted according to the outdoor ambient temperature.

[0061] The specific working process and working principle of the air conditioner control method according to the embodiment of the present invention are as follows:

[0062] First, in step S1, the system confirms that the air conditioner is turned on and operating stably. This is because subsequent temperature control and adjustment are only possible if the air conditioner is operating normally. Once the air conditioner is confirmed to be operating normally, the system obtains the current outdoor temperature data. As you can see, the outdoor temperature is a key factor in determining whether the air conditioner should enter low-temperature cooling mode.

[0063] Next, in step S2, after obtaining the outdoor ambient temperature, the system determines whether to activate low-temperature cooling mode based on a preset first set temperature. If the outdoor ambient temperature is lower than or equal to this set temperature, the air conditioner is controlled to enter low-temperature cooling mode. This set temperature may be set based on user requirements or manufacturer recommendations to ensure that the air conditioner can still provide effective cooling in low-temperature environments.

[0064] In step S3, once the air conditioner enters low-temperature cooling mode, the system fine-tunes the air conditioner's operating parameters based on the specific outdoor ambient temperature. This may include adjusting the compressor's operating frequency, varying the speed of the indoor and outdoor fans, and adjusting the opening of the electronic expansion valve to optimize the air conditioner's cooling efficiency and performance. These adjustments are intended to ensure that the air conditioner can still provide good cooling performance in low-temperature conditions, and may also take into account factors such as energy conservation and equipment life extension.

[0065] In the related art, the cooling efficiency of air conditioners usually decreases under low temperature conditions because the circulation of refrigerant and the working efficiency of the compressor are affected by low temperatures. This may result in poor cooling effect and fail to meet the user's comfort requirements.

[0066] Conventional air conditioning control methods aren't optimized for low-temperature environments. Consequently, air conditioners may not function properly or provide suboptimal cooling performance in ambient temperatures below 12°C. This is particularly true in cold winters or when specific temperature control is required. Therefore, achieving an air conditioning operation mode that provides both effective cooling and energy savings in low-temperature environments remains a challenge facing existing technologies.

[0067] In summary, to address the technical deficiencies in related technologies, the present invention provides an air conditioner control method. Through specific control logic, this method enables the air conditioner to maintain effective cooling performance even in low-temperature environments (e.g., below 12°C, or even -25°C). This significantly improves the poor cooling performance of traditional air conditioning systems in low-temperature conditions, meeting users' cooling needs in cold environments.

[0068] Furthermore, the present invention optimizes the air conditioner's cooling performance by fine-tuning key operating parameters such as the compressor frequency, external fan speed, and electronic expansion valve. This optimization not only improves cooling efficiency but also potentially helps extend the life of the equipment.

[0069] In addition, while ensuring the cooling effect, the present invention also takes energy-saving performance into consideration. By accurately controlling the working state of the air conditioner, unnecessary energy consumption can be reduced, thereby improving the energy efficiency ratio, which means lower operating costs for users.

[0070] It should also be noted that this invention significantly improves user comfort by ensuring stable cooling even in low-temperature environments. Users no longer need to worry about their air conditioner malfunctioning in cold environments, thereby increasing user satisfaction. Furthermore, the control method of this invention is applicable to a variety of low-temperature environments, providing an effective cooling solution for both cold winter outdoor environments and indoor spaces requiring specific temperature control.

[0071] According to some embodiments of the present invention, in the low-temperature cooling mode, the step of adjusting the operating parameters of the air conditioner according to the outdoor ambient temperature specifically includes:

[0072] In low-temperature cooling mode, the speed of the outdoor fan of the air conditioner is controlled and adjusted according to the range of the outdoor ambient temperature.

[0073] In this embodiment, the air conditioner control system automatically adjusts the speed of the outdoor fan according to the range of the outdoor ambient temperature. The above adjustment is to optimize the refrigeration cycle and ensure that the best cooling effect can be achieved under different low temperature conditions.

[0074] In this way, by adjusting the outdoor fan speed, the air conditioner can better control the flow of refrigerant and the heat exchange process. In low temperature environments, appropriate wind speed helps improve cooling efficiency while avoiding system efficiency loss or equipment damage caused by excessively low temperatures.

[0075] For ease of control, the method can divide the outdoor ambient temperature into different ranges. These ranges can be set according to the design and performance requirements of the air conditioner, for example, 0°C to 12°C, -9°C to 0°C, and -25°C to -9°C.

[0076] Furthermore, the step of controlling and adjusting the rotation speed of the outdoor fan of the air conditioner according to the range of the outdoor ambient temperature specifically includes:

[0077] Determining that the outdoor ambient temperature is within the first temperature range, controlling the speed of the outdoor fan to be adjusted to a first set speed;

[0078] If the outdoor ambient temperature is within the second temperature range, the speed of the outdoor fan is controlled to be adjusted to a second set speed;

[0079] If it is determined that the outdoor ambient temperature is in the third temperature range, the speed of the outdoor fan is controlled to be adjusted to a third set speed.

[0080] The maximum value of the first temperature range is less than or equal to the first set temperature, the first temperature range is greater than the second temperature range, the second temperature range is greater than the third temperature range, and the first set speed is greater than the second set speed, and the second set speed is greater than the third set speed.

[0081] For example, when the outdoor ambient temperature is greater than 0°C and less than or equal to 12°C, the air conditioner may set a higher fixed speed (eg, 500 rpm) for the outdoor fan to ensure sufficient cooling capacity.

[0082] When the outdoor ambient temperature is less than or equal to 0°C and greater than -9°C, the outdoor fan of the air conditioner may select a lower fixed speed (for example, 400 rpm) to adapt to the temperature drop and maintain energy efficiency.

[0083] When the outdoor ambient temperature is less than or equal to -9°C, the air conditioner may further reduce the speed of the outdoor fan (for example, 300 rpm) to reduce energy consumption and prevent over-cooling.

[0084] According to other embodiments of the present invention, in the low-temperature cooling mode, the step of adjusting the operating parameters of the air conditioner according to the outdoor ambient temperature specifically includes:

[0085] In low-temperature cooling mode, the target air outlet temperature of the air conditioner is determined according to the range of the outdoor ambient temperature.

[0086] Adjust the air conditioner's exhalation temperature to the target exhalation temperature.

[0087] In this embodiment, the air conditioner control system first monitors the outdoor ambient temperature in real time and determines the current outdoor temperature range based on a preset temperature range. After determining the outdoor ambient temperature range, the system determines the target air outlet temperature of the air conditioner based on this range.

[0088] Once the target discharge temperature is determined, the air conditioner's control system will take measures to adjust the actual discharge temperature to achieve the target. This typically involves adjusting parameters such as the compressor's operating frequency, the opening of the electronic expansion valve, and the fan speed. For example, to increase the discharge temperature, the system might increase the compressor's operating frequency or adjust the opening of the electronic expansion valve; conversely, to decrease the discharge temperature, the system might decrease the compressor's operating frequency or adjust other relevant parameters.

[0089] The target air discharge temperature (THT) is the ideal air discharge temperature that the air conditioner should set to achieve optimal cooling performance within the specified temperature range. This temperature setting may be based on the refrigerant's characteristics, heat exchange efficiency, and the overall performance of the air conditioner.

[0090] It can be understood that in this embodiment, by precisely controlling the outlet air temperature, the air conditioner can optimize the refrigeration cycle under different outdoor ambient temperatures. In low-temperature environments, an appropriate outlet air temperature helps improve heat exchange efficiency, thereby enhancing cooling performance, while also helping to protect the air conditioner from damage caused by overcooling or overheating.

[0091] In summary, this invention achieves precise control of the air conditioner's cooling performance in low-temperature environments by dynamically adjusting the air conditioner's target air temperature based on the outdoor ambient temperature and adjusting the actual temperature to the target value. This method not only improves cooling efficiency, but also helps save energy and extend the air conditioner's service life.

[0092] Furthermore, the step of determining a target air outlet temperature of the air conditioner according to the range of the outdoor ambient temperature specifically includes:

[0093] Determining that the outdoor ambient temperature is within the first temperature range, obtaining the target air outlet temperature of the air conditioner as the first air outlet temperature;

[0094] Determining that the outdoor ambient temperature is in the second temperature range, obtaining the target air outlet temperature of the air conditioner as the second air outlet temperature;

[0095] Determining that the outdoor ambient temperature is in the third temperature range, obtaining the target air outlet temperature of the air conditioner as the third air outlet temperature;

[0096] The maximum value of the first temperature interval is less than or equal to the first set temperature, the first temperature interval is greater than the second temperature interval, the second temperature interval is greater than the third temperature interval, and the first exhalation temperature is greater than the second exhalation temperature, and the second exhalation temperature is greater than the third exhalation temperature.

[0097] For example, the first temperature range is: -5°C to 12°C, and the first exhalation temperature is set to 50°C; the second temperature range is: -15°C to -5°C, and the second exhalation temperature is set to 45°C; the third temperature range is: below -15°C, and the third exhalation temperature is set to 40°C.

[0098] That is, when the outdoor ambient temperature is greater than 0°C and less than or equal to 12°C, the target exhalation temperature is set to 50°C; when the outdoor ambient temperature is less than or equal to 0°C and greater than -9°C, the target exhalation temperature is set to 40°C; when the outdoor ambient temperature is less than or equal to -9°C, the target exhalation temperature is set to 30°C.

[0099] Furthermore, the step of adjusting the air outlet temperature of the air conditioner to the target air outlet temperature specifically includes:

[0100] The opening of the electronic expansion valve in the air conditioner is adjusted according to the target air outlet temperature so that the air outlet temperature of the air conditioner is adjusted to the target air outlet temperature.

[0101] As you can understand, the electronic expansion valve is a key component in air conditioning and refrigeration systems, controlling the flow of refrigerant from the high-pressure side to the low-pressure side. Adjusting the opening of the electronic expansion valve influences the refrigerant flow rate, thereby controlling the heat exchange efficiency between the evaporator and condenser, ultimately regulating the discharge temperature.

[0102] Specifically, the air conditioner's control system adjusts the opening of the electronic expansion valve based on the set target outlet temperature. If the current outlet temperature is higher than the target, the control system increases the opening of the electronic expansion valve, allowing more refrigerant to flow into the evaporator, thereby increasing the amount of refrigerant evaporated and lowering the outlet temperature. Conversely, if the current outlet temperature is lower than the target, the control system decreases the opening of the electronic expansion valve, reducing the refrigerant flow and raising the outlet temperature.

[0103] The air conditioner's control system also continuously monitors the outlet temperature and compares it with the target outlet temperature. Through closed-loop feedback control, the system continuously adjusts the opening of the electronic expansion valve to ensure that the outlet temperature remains stable within the target temperature range.

[0104] In this way, by precisely controlling the opening of the electronic expansion valve, the air conditioner can optimize the refrigeration cycle under different outdoor ambient temperatures, improve cooling efficiency, and maintain system stability and reliability.

[0105] According to some embodiments of the present invention, during low-temperature cooling, the external temperature limit and air volume limit are disabled during normal frequency-release cooling. The compressor frequency is limited only by the maximum frequency limit (50 Hz) and minimum frequency limit (20 Hz) for low-temperature cooling. Furthermore, when frequency adjustment occurs, the compressor frequency is controlled according to the frequency adjustment logic used during frequency-release control.

[0106] In the above embodiment, it is understood that the air conditioner's compressor frequency control strategy changes in low-temperature cooling mode. In normal cooling mode, the compressor frequency may be adjusted based on the indoor and outdoor temperature differences and cooling demand. However, in low-temperature cooling mode, these conventional frequency adjustment rules (de-frequency cooling) no longer apply.

[0107] Furthermore, in low-temperature cooling mode, the compressor's operating frequency is limited, neither exceeding the maximum frequency (50Hz) nor falling below the minimum frequency (20Hz). This limitation ensures that the compressor can operate at a relatively stable frequency in low-temperature environments, preventing efficiency loss or equipment damage due to excessively low temperatures.

[0108] Furthermore, while conventional frequency regulation no longer applies in low-temperature cooling mode, when the compressor frequency needs to be adjusted up or down, the air conditioner will follow specific frequency regulation logic. This may involve complex algorithms based on the indoor and outdoor temperature difference, the indoor target temperature, and other sensor data to achieve precise temperature control.

[0109] In some specific embodiments of the present invention, after the step of controlling the air conditioner to enter the low-temperature cooling mode, the air conditioner control method further includes:

[0110] In the low-temperature cooling mode, the target operating frequency of the compressor in the air conditioner is set to the maximum operating frequency, and the actual operating frequency of the compressor is controlled to always be higher than the minimum operating frequency.

[0111] In this embodiment, in low-temperature cooling mode, to ensure that the air conditioner can provide sufficient cooling capacity, the control system sets the compressor's target operating frequency to the maximum operating frequency. This means that the compressor will operate at its highest efficiency to meet the cooling needs in the low-temperature environment.

[0112] In addition to setting the target frequency, the control system also ensures that the actual operating frequency of the compressor is always higher than the minimum operating frequency. This helps prevent the compressor from running at a frequency that is too low, which could result in insufficient cooling effect or reduced system efficiency.

[0113] According to some embodiments of the present invention, after the step of controlling the air conditioner to enter the low-temperature cooling mode, the method further includes:

[0114] In low-temperature cooling mode, obtain the outdoor coil temperature of the air conditioner outdoor unit;

[0115] Control the start and stop of the air conditioner's outdoor fan according to the temperature of the outdoor unit coil.

[0116] Furthermore, the step of controlling the start and stop of the outdoor fan of the air conditioner according to the outdoor coil temperature specifically includes:

[0117] If it is determined that the outdoor unit coil temperature is continuously lower than the minimum coil temperature within the first set time, the outdoor fan is controlled to stop;

[0118] If it is determined that the outdoor unit coil temperature is higher than the minimum coil temperature and the outdoor fan is currently stopped, the outdoor fan is controlled to be restarted.

[0119] In the above embodiment, after the air conditioner enters the low-temperature cooling mode, the control system continuously monitors the coil temperature of the outdoor unit. The coil temperature is one of the key parameters that affect the cooling efficiency and safe operation of the air conditioner.

[0120] Based on the monitored outdoor unit coil temperature, the control system decides whether to start or stop the outdoor fan. This decision is based on a comparison of the coil temperature with a preset minimum coil temperature threshold.

[0121] If the outdoor unit coil temperature remains below the set minimum coil temperature (e.g. -15°C) for a set period of time (e.g. 2 minutes), the control system will shut down the outdoor fan to prevent system efficiency loss or freezing caused by excessively low coil temperature.

[0122] If the outdoor unit coil temperature subsequently rises above the minimum coil temperature and the outdoor fan is currently off, the control system will control the outdoor fan to turn back on. This ensures that the air conditioner provides cooling when needed while avoiding overcooling or freezing.

[0123] The control system then continuously monitors coil temperature and adjusts the outdoor fan's operating status based on real-time data. This dynamic control strategy helps maintain cooling effectiveness while optimizing energy efficiency and protecting the air conditioner from low-temperature damage.

[0124] This coil temperature-based outdoor fan start-stop control method enables the air conditioner to operate more intelligently and efficiently in low-temperature cooling mode. This method not only improves the air conditioner's performance in low-temperature environments, but also helps extend the equipment's lifespan and ensures stable system operation.

[0125] The control device of the air conditioner provided by the present invention is described below. The control device of the air conditioner described below and the control method of the air conditioner described above can be referred to each other.

[0126] like Figure 2 As shown, the control device of the air conditioner according to the second embodiment of the present invention includes:

[0127] The acquisition module 110 is used to determine whether the air conditioner is turned on and running stably, and then obtain the outdoor ambient temperature;

[0128] The first control module 120 is used to control the air conditioner to enter a low-temperature cooling mode when the outdoor ambient temperature is less than or equal to a first set temperature;

[0129] The second control module 130 is configured to adjust operating parameters of the air conditioner according to the outdoor ambient temperature in the low-temperature cooling mode.

[0130] According to the third embodiment of the present invention, the air conditioner includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the control method of the air conditioner according to the first embodiment of the present invention is implemented.

[0131] Figure 3 An example of a physical structure diagram of an electronic device is shown below. Figure 3As shown, the electronic device may include: a processor 810, a communication interface 820, a memory 830, and a communication bus 840, wherein the processor 810, the communication interface 820, and the memory 830 communicate with each other via the communication bus 840. The processor 810 may call logic instructions in the memory 830 to execute a method for controlling an air conditioner, including: determining that the air conditioner is turned on and operating stably, obtaining the outdoor ambient temperature; controlling the air conditioner to enter a low-temperature cooling mode based on the outdoor ambient temperature being less than or equal to a first set temperature; and in the low-temperature cooling mode, adjusting operating parameters of the air conditioner based on the outdoor ambient temperature.

[0132] In addition, the logic instructions in the above-mentioned memory 830 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0133] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the air conditioner control method provided by the above methods, including: determining that the air conditioner is turned on and running stably, then obtaining the outdoor ambient temperature; based on the outdoor ambient temperature being less than or equal to a first set temperature, controlling the air conditioner to enter a low-temperature cooling mode; in the low-temperature cooling mode, adjusting the operating parameters of the air conditioner according to the outdoor ambient temperature.

[0134] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, it is implemented to execute the air conditioner control method provided by the above methods, including: determining that the air conditioner is turned on and running stably, obtaining the outdoor ambient temperature; controlling the air conditioner to enter a low-temperature cooling mode based on the outdoor ambient temperature being less than or equal to a first set temperature; and in the low-temperature cooling mode, adjusting the operating parameters of the air conditioner according to the outdoor ambient temperature.

[0135] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units. That is, they may be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0136] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus the necessary general hardware platform, or of course, by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the existing technology can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of each embodiment or certain parts of the embodiment.

[0137] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A method for controlling an air conditioner, characterized in that: include: Determining that the air conditioner is turned on and operating stably, obtaining the outdoor ambient temperature; According to the outdoor ambient temperature being less than or equal to a first set temperature, controlling the air conditioner to enter a low-temperature cooling mode; In the low-temperature cooling mode, the operating parameters of the air conditioner are adjusted according to the outdoor ambient temperature.

2. The air conditioner control method according to claim 1, characterized in that: The step of adjusting the operating parameters of the air conditioner according to the outdoor ambient temperature in the low-temperature cooling mode specifically includes: In the low-temperature cooling mode, the rotation speed of the outdoor fan of the air conditioner is controlled and adjusted according to the range of the outdoor ambient temperature.

3. The air conditioner control method according to claim 2, characterized in that: The step of controlling and adjusting the rotation speed of the outdoor fan of the air conditioner according to the range of the outdoor ambient temperature specifically includes: Determining that the outdoor ambient temperature is within a first temperature range, controlling the speed of the outdoor fan to be adjusted to a first set speed; Determining that the outdoor ambient temperature is within a second temperature range, controlling the speed of the outdoor fan to be adjusted to a second set speed; Determining that the outdoor ambient temperature is within a third temperature range, controlling the speed of the outdoor fan to be adjusted to a third set speed; The maximum value of the first temperature range is less than or equal to the first set temperature, the first temperature range is greater than the second temperature range, the second temperature range is greater than the third temperature range, and the first set speed is greater than the second set speed, and the second set speed is greater than the third set speed.

4. The air conditioner control method according to claim 1, wherein: The step of adjusting the operating parameters of the air conditioner according to the outdoor ambient temperature in the low-temperature cooling mode specifically includes: In the low-temperature cooling mode, determining a target air outlet temperature of the air conditioner according to the range of the outdoor ambient temperature; The air outlet temperature of the air conditioner is adjusted to the target air outlet temperature.

5. The air conditioner control method according to claim 4, characterized in that: The step of determining the target air outlet temperature of the air conditioner according to the range of the outdoor ambient temperature specifically includes: Determining that the outdoor ambient temperature is within a first temperature range, obtaining a target air outlet temperature of the air conditioner as a first air outlet temperature; Determining that the outdoor ambient temperature is within a second temperature range, obtaining the target air outlet temperature of the air conditioner as the second air outlet temperature; Determining that the outdoor ambient temperature is within a third temperature range, obtaining a target air outlet temperature of the air conditioner as the third air outlet temperature; The maximum value of the first temperature range is less than or equal to the first set temperature, the first temperature range is greater than the second temperature range, the second temperature range is greater than the third temperature range, and the first exhalation temperature is greater than the second exhalation temperature, and the second exhalation temperature is greater than the third exhalation temperature.

6. The air conditioner control method according to claim 4, characterized in that: The step of adjusting the air outlet temperature of the air conditioner to the target air outlet temperature specifically includes: The opening of the electronic expansion valve in the air conditioner is adjusted according to the target air outlet temperature, so that the air outlet temperature of the air conditioner is adjusted to the target air outlet temperature.

7. The air conditioner control method according to any one of claims 1 to 6, characterized in that: After the step of controlling the air conditioner to enter the low-temperature cooling mode, the method further includes: In the low-temperature cooling mode, the target operating frequency of the compressor in the air conditioner is set to the maximum operating frequency, and the actual operating frequency of the compressor is controlled to always be higher than the minimum operating frequency.

8. The air conditioner control method according to any one of claims 1 to 6, characterized in that: After the step of controlling the air conditioner to enter the low-temperature cooling mode, the method further includes: In the low-temperature cooling mode, obtaining the outdoor coil temperature of the air conditioner outdoor unit; The outdoor fan of the air conditioner is started and stopped according to the temperature of the outdoor unit coil.

9. The air conditioner control method according to claim 8, characterized in that: The step of controlling the start and stop of the outdoor fan of the air conditioner according to the outdoor unit coil temperature specifically includes: Determining that the outdoor unit coil temperature is continuously lower than the minimum coil temperature within a first set time period, then controlling the outdoor fan to stop; If it is determined that the outdoor unit coil temperature is higher than the minimum coil temperature and the outdoor fan is currently stopped, the outdoor fan is controlled to be restarted.

10. A control device for an air conditioner, characterized in that: include: an acquisition module, configured to determine that the air conditioner is turned on and is operating stably, and then acquire the outdoor ambient temperature; a first control module, configured to control the air conditioner to enter a low-temperature cooling mode according to the outdoor ambient temperature being less than or equal to a first set temperature; The second control module is configured to adjust the operating parameters of the air conditioner according to the outdoor ambient temperature in the low-temperature cooling mode.

11. An air conditioner comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the air conditioner control method according to any one of claims 1 to 9 is implemented.

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