Method and apparatus for controlling air conditioner, air conditioner, storage medium

Abstract

The application relates to the technical field of intelligent household appliances, and discloses a method for controlling an air conditioner, which comprises the following steps: in the case that the air conditioner is in a refrigeration mode, determining an indoor environment temperature T ai , an outdoor environment temperature T ao , a current air outlet speed V1 of an indoor fan and a stable air outlet speed V2 of the indoor fan; and controlling the air conditioner to execute an anti-freezing strategy according to T ai , T ao , V1 and V2. The method controls the air conditioner to execute the anti-freezing strategy according to the indoor environment temperature T ai , the outdoor environment temperature T ao , the current air outlet speed V1 of the indoor fan and the stable air outlet speed V2 of the indoor fan. The method is favorable for more accurately judging the freezing condition of an evaporator and executing the anti-freezing strategy, thereby avoiding the freezing of the evaporator, avoiding the phenomenon that the air conditioner continues to run with more ice, avoiding water leakage and poor evaporation, avoiding the phenomenon that liquid refrigerant enters a compressor and causes damage to the compressor due to liquid strike, improving the air outlet effect, prolonging the service life of the air conditioner and improving the user experience. The application further discloses a device for controlling the air conditioner, an air conditioner and a storage medium.

Description

Technical Field

[0001] This application relates to the field of smart home appliance technology, such as a method and apparatus for controlling an air conditioner, an air conditioner, and a storage medium. Background Technology

[0002] Currently, with the continuous improvement of people's living standards, people are also placing higher and higher demands on their living environment. To maintain a comfortable ambient temperature, air conditioners have become an indispensable appliance in people's lives. However, when an air conditioner is running in cooling mode, if the indoor humidity is high, the evaporator is prone to freezing. This freezing severely affects the heat exchange efficiency of the evaporator, causing its heat exchange effect to continuously weaken, thus affecting the comfort of the indoor environment. Therefore, it is necessary to ensure that the evaporator does not freeze during air conditioner cooling operation.

[0003] The related technology discloses an air conditioner in which a temperature sensor is installed on the indoor unit's coil to monitor the freezing phenomenon of the indoor unit's coil, so that the air conditioner can determine the freezing situation by the temperature of the indoor unit's coil.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] Judging whether the evaporator is freezing solely by the indoor unit's coil temperature is not an accurate assessment of the freezing situation. Often, the evaporator freezes before the freeze protection mechanism is activated, resulting in poor airflow and even liquid backflow, which affects the lifespan of the air conditioner and the user experience.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0008] This disclosure provides a method and apparatus for controlling an air conditioner, an air conditioner, and a storage medium to accurately determine the freezing status of the evaporator, avoid evaporator freezing, and thus avoid poor airflow, liquid return, reduced air conditioner lifespan, and poor user experience caused by the air conditioner continuing to operate despite excessive ice buildup.

[0009] In some embodiments, the method includes: determining the indoor ambient temperature T when the air conditioner is in cooling mode. ai Outdoor ambient temperature T ao The current airflow velocity V1 and the stable airflow velocity V2 of the indoor fan. Based on T ai T ao V1 and V2 control the air conditioner to implement anti-freeze strategies.

[0010] In some embodiments, the apparatus includes: a determining module configured to determine an indoor ambient temperature T when the air conditioner is in cooling mode. ai Outdoor ambient temperature T ao The current airflow velocity V1 and the stable airflow velocity V2 of the indoor fan are set. The control module is configured to adjust the airflow velocity based on T. ai T ao V1 and V2 control the air conditioner to implement anti-freeze strategies.

[0011] In some embodiments, the apparatus includes a processor and a memory storing program instructions, the processor being configured to execute the method for controlling an air conditioner as described above when the program instructions are executed.

[0012] In some embodiments, the air conditioner includes: an air conditioner body; and the aforementioned device for controlling the air conditioner is installed on the air conditioner body.

[0013] In some embodiments, the storage medium stores program instructions that, when executed, perform the method described above for controlling an air conditioner.

[0014] The method, apparatus, air conditioner, and storage medium for controlling an air conditioner provided in this disclosure can achieve the following technical effects:

[0015] Based on indoor ambient temperature T ai Outdoor ambient temperature T ao The current airflow speed V1 and stable airflow speed V2 of the indoor fan control the air conditioner to implement anti-freeze strategies. This allows for a more accurate assessment of the evaporator's freezing status and the execution of anti-freeze strategies, preventing the evaporator from freezing. This avoids the air conditioner continuing to operate with excessive ice buildup, preventing leaks and poor evaporation, and preventing liquid refrigerant from entering the compressor and causing damage. Ultimately, this improves airflow efficiency, extends the air conditioner's lifespan, and enhances the user experience.

[0016] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0017] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0018] Figure 1 This is a schematic diagram of a method for controlling an air conditioner provided in an embodiment of this disclosure;

[0019] Figure 2 This is a schematic diagram of another method for controlling an air conditioner provided in an embodiment of this disclosure;

[0020] Figure 3 This is a schematic diagram of another method for controlling an air conditioner provided in an embodiment of this disclosure;

[0021] Figure 4 This is a schematic diagram of another method for controlling an air conditioner provided in an embodiment of this disclosure;

[0022] Figure 5 This is a schematic diagram of a device for controlling an air conditioner provided in an embodiment of this disclosure;

[0023] Figure 6 This is a schematic diagram of another device for controlling an air conditioner provided in an embodiment of this disclosure;

[0024] Figure 7 This is a schematic diagram of an air conditioner provided in an embodiment of this disclosure. Detailed Implementation

[0025] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0026] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0027] Unless otherwise stated, the term "multiple" means two or more.

[0028] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0029] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0030] The term "correspondence" can refer to an association or binding relationship. The correspondence between A and B means that there is an association or binding relationship between A and B.

[0031] In this embodiment of the disclosure, smart home appliances refer to home appliances formed by introducing microprocessors, sensor technology and network communication technology into home appliances. They have the characteristics of intelligent control, intelligent sensing and intelligent application. The operation of smart home appliances often relies on the application and processing of modern technologies such as the Internet of Things, the Internet and electronic chips. For example, smart home appliances can be connected to electronic devices to enable users to remotely control and manage smart home appliances.

[0032] In the disclosed embodiments, the terminal device refers to an electronic device with wireless connectivity. The terminal device can communicate with the aforementioned smart home appliances via the internet, or directly via Bluetooth, Wi-Fi, or other methods. In some embodiments, the terminal device may be, for example, a mobile device, a computer, or an in-vehicle device built into a hovercraft, or any combination thereof. Mobile devices may include, for example, mobile phones, smart home devices, wearable devices, smart mobile devices, virtual reality devices, or any combination thereof. Wearable devices may include, for example, smartwatches, smart bracelets, pedometers, etc.

[0033] Combination Figure 1 As shown in the embodiments of this disclosure, a method for controlling an air conditioner is provided, comprising:

[0034] S101, when the air conditioner is in cooling mode, the air conditioner determines the indoor ambient temperature T. ai Outdoor ambient temperature T ao The current airflow velocity V1 and the stable airflow velocity V2 of the indoor fan.

[0035] S102, the air conditioner is based on T ai T ao V1 and V2 control the air conditioner to implement anti-freeze strategies.

[0036] The method for controlling an air conditioner provided in this disclosure can be used to adjust the indoor ambient temperature T. ai Outdoor ambient temperature T aoThe current airflow speed V1 and stable airflow speed V2 of the indoor fan control the air conditioner to implement anti-freeze strategies. This allows for a more accurate assessment of the evaporator's freezing status and the execution of anti-freeze strategies, preventing the evaporator from freezing. This avoids the air conditioner continuing to operate with excessive ice buildup, preventing leaks and poor evaporation, and preventing liquid refrigerant from entering the compressor and causing damage. Ultimately, this improves airflow efficiency, extends the air conditioner's lifespan, and enhances the user experience.

[0037] Optionally, the air conditioner is based on t ai t ao V1 and V2 control the air conditioner to implement anti-freeze strategies, including: in T ai <T1 or T ao When T < T2, the attenuation coefficient f of the indoor unit's airflow velocity is determined based on V1 and V2. The air conditioner then controls the execution of an anti-freeze strategy based on f and the indoor coil temperature T. Here, T1 is the first temperature threshold, and T2 is the second temperature threshold. Specifically, T1 can be 22℃, and T2 can be 25℃. Thus, when T... ai <T1 or T ao In cases <T2, the evaporator is prone to freezing protection. If the evaporator freezing is determined solely by the coil temperature, the evaporator or low-pressure pipe may freeze when there is poor liquid distribution, improper coil positioning, or a faulty coil sensor. However, the air conditioner will not execute the anti-freeze strategy. Instead, the anti-freeze strategy is controlled based on the attenuation coefficient f of the air outlet velocity determined by V1 and V2 and the indoor coil temperature T. This allows for a more accurate determination of whether the evaporator is frozen. In cases of improper coil positioning or a faulty coil sensor, the freezing status of the evaporator can be more accurately assessed, and the anti-freeze strategy can be executed to prevent the evaporator from freezing. This also prevents the air conditioner from continuing to operate despite excessive ice buildup, avoiding water leakage and poor evaporation, which can lead to liquid refrigerant entering the compressor and causing damage. This improves airflow efficiency, extends the lifespan of the air conditioner, and enhances the user experience.

[0038] Optionally, the air conditioner determines f based on V1 and V2, including: the air conditioner calculates f = V1 / V2. Thus, in T... ai <T1 or T aoIn cases where T2 < T2, it's easier to determine the attenuation coefficient f of the air outlet velocity based on V1 and V2. This allows for better control of the air conditioner's anti-freeze strategy based on f and the indoor coil temperature T, leading to a more accurate determination of whether the evaporator is frozen. When the coil is improperly positioned or the coil sensor malfunctions, a more accurate assessment of the evaporator's freezing status is possible, enabling the implementation of anti-freeze strategies to prevent evaporator freezing. This avoids the air conditioner continuing to operate with excessive ice buildup, preventing leaks and poor evaporation, and preventing liquid refrigerant from entering the compressor and causing damage due to liquid slugging. Ultimately, this improves airflow efficiency, extends the air conditioner's lifespan, and enhances the user experience.

[0039] Optionally, the air conditioner controls itself to execute an anti-freeze strategy based on f and T, including: the air conditioner determines whether to detect T based on f; the air conditioner controls itself to execute the anti-freeze strategy based on T. Thus, in T... ai <T1 or T ao In cases where T2 is less than 2, it is beneficial to better control the air conditioner's anti-freeze strategy based on the f determined by V1 and V2 and the indoor coil temperature T, thus more accurately determining whether the evaporator is frozen. When the coil is improperly positioned or the coil sensor malfunctions, a more accurate judgment of the evaporator's freezing status can be made, and the anti-freeze strategy can be implemented to prevent the evaporator from freezing. This avoids the air conditioner continuing to operate despite excessive ice buildup, preventing water leakage and poor evaporation, preventing liquid refrigerant from entering the compressor and causing liquid slugging and damage, improving airflow efficiency, extending the air conditioner's lifespan, and enhancing the user experience.

[0040] Optionally, the air conditioner determines whether to detect T based on f, including: if f < f1, the air conditioner determines to detect T. Here, f1 is the attenuation coefficient threshold. Thus, in T... ai <T1 or T ao In cases where T2 is less than 2, it is beneficial to better control the air conditioner's anti-freeze strategy based on the f determined by V1 and V2 and the indoor coil temperature T, thus more accurately determining whether the evaporator is frozen. When the coil is improperly positioned or the coil sensor malfunctions, a more accurate judgment of the evaporator's freezing status can be made, and the anti-freeze strategy can be implemented to prevent the evaporator from freezing. This avoids the air conditioner continuing to operate despite excessive ice buildup, preventing water leakage and poor evaporation, preventing liquid refrigerant from entering the compressor and causing liquid slugging and damage, improving airflow efficiency, extending the air conditioner's lifespan, and enhancing the user experience.

[0041] Optionally, the air conditioner executes an anti-freeze strategy based on T, including: the air conditioner determining whether the coil sensor is malfunctioning or whether the coil position is improper based on T. If the coil sensor is malfunctioning or the coil position is improper, the air conditioner executes the anti-freeze strategy. Thus, in T... ai <T1 or Tao In the case of <T2, it is beneficial to better determine whether the coil position is improper or the internal coil sensor is malfunctioning based on f and the internal coil temperature T determined by V1 and V2. This allows for a more accurate assessment of the evaporator's freezing status when the coil position is improper or the coil sensor is malfunctioning, enabling the implementation of anti-freezing strategies to prevent the evaporator from freezing. This also prevents the air conditioner from continuing to operate despite excessive ice buildup, avoiding water leakage and poor evaporation, preventing liquid refrigerant from entering the compressor and causing liquid slugging and damage, improving airflow efficiency, extending the air conditioner's lifespan, and enhancing the user experience.

[0042] Optionally, the air conditioner determines whether the coil sensor is malfunctioning or whether the coil position is improper based on temperature T, including: if T < T3, the air conditioner determines the coil sensor is malfunctioning; if T > T3, the air conditioner determines the coil position is improper. Here, T3 is the third temperature threshold. Thus, in T... ai <T1 or T ao In the case of <T2, it is beneficial to better determine whether the coil position is improper or the internal coil sensor is malfunctioning based on f and the internal coil temperature T determined by V1 and V2. This allows for a more accurate assessment of the evaporator's freezing status when the coil position is improper or the coil sensor is malfunctioning, enabling the implementation of anti-freezing strategies to prevent the evaporator from freezing. This also prevents the air conditioner from continuing to operate despite excessive ice buildup, avoiding water leakage and poor evaporation, preventing liquid refrigerant from entering the compressor and causing liquid slugging and damage, improving airflow efficiency, extending the air conditioner's lifespan, and enhancing the user experience.

[0043] Optionally, the air conditioner control unit performs an anti-freeze strategy, including: adjusting the set temperature T. s Air conditioner according to T s and T ai This controls the operating status of the compressor, outdoor fan, and indoor fan to achieve anti-freeze protection. Thus, based on the indoor ambient temperature T... ai Outdoor ambient temperature T ao The current airflow velocity V1 and the stable airflow velocity V2 of the indoor fan are used to adjust the set temperature T. s This system controls the operating status of the compressor, outdoor fan, and indoor fan to achieve anti-freeze protection. It allows for a more accurate assessment of the evaporator's freezing status and the implementation of anti-freeze strategies, preventing the evaporator from freezing. This avoids the air conditioner continuing to operate with excessive ice buildup, preventing leaks and poor evaporation, and preventing liquid refrigerant from entering the compressor and causing damage. It also improves airflow efficiency, extends the air conditioner's lifespan, and enhances the user experience.

[0044] Optionally, the air conditioner adjusts the set temperature T s Including: Air conditioner control Ts With temperature adjustment rate ΔT v Increase. Specifically, t v The value can be 0.5℃ / 2min. Thus, based on the indoor ambient temperature T... ai Outdoor ambient temperature T ao The current airflow velocity V1 and the stable airflow velocity V2 of the indoor fan are controlled by T. s With temperature adjustment rate ΔT v Increased and controlled operation of the compressor, outdoor fan, and indoor fan enables anti-freeze protection. This allows for more accurate assessment of evaporator freezing conditions and the implementation of anti-freeze strategies, preventing evaporator freezing and thus avoiding excessive ice buildup in the air conditioner. It also prevents leaks, poor evaporation, liquid refrigerant entering the compressor and causing liquid slugging, which can damage the compressor. Furthermore, it improves airflow efficiency, extends the air conditioner's lifespan, and enhances the user experience.

[0045] Optionally, the air conditioner is based on T s and T ai To control the operating status of the compressor, outdoor fan, and indoor fan to achieve anti-freeze protection, including: [T...] s >T ai In this situation, the air conditioner controls the compressor and outdoor fan to stop running, while the indoor fan continues to operate. Thus, based on the indoor ambient temperature T... ai Outdoor ambient temperature T ao The current airflow velocity V1 and the stable airflow velocity V2 of the indoor fan are used to adjust the set temperature T. s In T s When the temperature is higher than the indoor ambient temperature, the compressor and outdoor fan stop operating, while the indoor fan continues to run to achieve anti-freeze protection. This allows for a more accurate assessment of the evaporator's freezing status and the implementation of anti-freeze strategies, preventing the evaporator from freezing. This avoids the air conditioner continuing to operate despite excessive ice buildup, preventing leaks and poor evaporation, and preventing liquid refrigerant from entering the compressor and causing damage. It also improves airflow efficiency, extends the air conditioner's lifespan, and enhances the user experience.

[0046] Optionally, determining the current airflow velocity V1 and the stable airflow velocity V2 of the indoor fan of the air conditioner includes: the air conditioner determining the current airflow velocity of the indoor fan detected at each interval of a first time threshold as V1; and the air conditioner determining the airflow velocity when the indoor fan is running stably for a second time threshold as V2. Specifically, the first time threshold can be 5 minutes. The second time threshold can also be 5 minutes. This facilitates a better determination of the current airflow velocity V1 and the stable airflow velocity V2 of the indoor fan, thereby facilitating better calculation based on the indoor ambient temperature T. ai Outdoor ambient temperature Tao V1 and V2 controls enable the air conditioner to implement anti-freeze strategies. This allows for a more accurate assessment of the evaporator's freezing status and the execution of anti-freeze measures, preventing the evaporator from freezing. This also prevents the air conditioner from continuing to operate despite excessive ice buildup, avoiding water leaks and poor evaporation, preventing liquid refrigerant from entering the compressor and causing damage due to liquid slugging, improving airflow efficiency, extending the air conditioner's lifespan, and enhancing the user experience.

[0047] Optionally, determining the stable airflow velocity V2 of the indoor fan of the air conditioner further includes: re-evaluating whether the indoor fan has been operating stably for a second time threshold when the indoor fan speed changes. If the indoor fan is operating stably for the second time threshold, the airflow velocity of the indoor fan is determined to be V2. This facilitates a better determination of the current airflow velocity V1 and the stable airflow velocity V2 of the indoor fan, thereby enabling better calculation based on the indoor ambient temperature T. ai Outdoor ambient temperature T ao V1 and V2 controls enable the air conditioner to implement anti-freeze strategies. This allows for a more accurate assessment of the evaporator's freezing status and the execution of anti-freeze measures, preventing the evaporator from freezing. This also prevents the air conditioner from continuing to operate despite excessive ice buildup, avoiding water leaks and poor evaporation, preventing liquid refrigerant from entering the compressor and causing damage due to liquid slugging, improving airflow efficiency, extending the air conditioner's lifespan, and enhancing the user experience.

[0048] Optionally, the air conditioner determines T. ai T ao Following V1 and V2, it also includes: air conditioners according to T ai T ao , and ΔT, control the air conditioner to execute the anti-freeze strategy. Where, ΔT = T 出口 -T 进口 △T represents the inlet and outlet temperature difference of each circuit of the indoor unit evaporator. 出口 T represents the outlet temperature of each evaporator circuit in the indoor unit. 进口 This refers to the inlet temperature of each circuit of the indoor unit's evaporator. Therefore, based on the indoor ambient temperature T... ai Outdoor ambient temperature T ao The current airflow velocity V1 and the stable airflow velocity V2 of the indoor fan control the air conditioner to implement the anti-freeze strategy. This is based on the indoor ambient temperature T. ai Outdoor ambient temperature T aoThe temperature difference ΔT between the inlet and outlet of each evaporator circuit in the indoor unit controls the air conditioner's anti-freezing strategy. This allows for a more accurate assessment of the evaporator's freezing status and the implementation of anti-freezing measures, preventing the evaporator from freezing. This avoids the air conditioner continuing to operate with excessive ice buildup, preventing leaks and poor evaporation, and preventing liquid refrigerant from entering the compressor and causing damage. It also improves airflow efficiency, extends the air conditioner's lifespan, and enhances the user experience.

[0049] Optionally, the air conditioner is based on T ai T ao The temperature difference ΔT between the inlet and outlet of each circuit of the indoor unit evaporator is used to control the air conditioner to implement an anti-freeze strategy, including: [The text abruptly ends here, so the translation stops as well.] ai <T1 or T ao When T < T2, the air conditioner executes an anti-freeze strategy based on ΔT. Thus, in T... ai <T1 or T ao In cases <T2, the evaporator is prone to freezing protection. If the evaporator freezing is determined solely by the coil temperature, the evaporator or low-pressure pipe may freeze when there is poor liquid distribution, improper coil positioning, or a faulty coil sensor. However, the air conditioner will not execute the anti-freeze strategy. Instead, the anti-freeze strategy is controlled based on the inlet and outlet temperature difference ΔT of each circuit of the indoor unit's evaporator. This allows for a more accurate determination of whether the evaporator is frozen. In cases of poor liquid distribution, the freezing status of the evaporator can be more accurately assessed, and the anti-freeze strategy can be implemented to prevent the evaporator from freezing. This also prevents the air conditioner from continuing to operate despite excessive ice buildup, avoiding water leakage and poor evaporation, which can lead to liquid refrigerant entering the compressor and causing damage. This improves airflow efficiency, extends the lifespan of the air conditioner, and enhances the user experience.

[0050] Optionally, the air conditioner controls the air conditioner to execute an anti-freeze strategy based on ΔT, including: the air conditioner determines the liquid distribution status of the evaporator based on ΔT. If the liquid distribution status of the evaporator is poor, the air conditioner controls the air conditioner to execute the anti-freeze strategy. Thus, in T... ai <T1 or T ao In cases <T2, the liquid distribution status of the evaporator is determined based on the inlet and outlet temperature difference ΔT of each circuit of the indoor unit evaporator. If the liquid distribution status of the evaporator is poor, the air conditioner is controlled to implement an anti-freeze strategy, which will more accurately determine whether the evaporator is frozen. Therefore, when the liquid distribution of the evaporator is poor, the freezing status of the evaporator is more accurately judged and the anti-freeze strategy is implemented to avoid the evaporator freezing. This prevents the air conditioner from continuing to operate with excessive ice buildup, avoids water leakage and poor evaporation, and prevents liquid refrigerant from entering the compressor, which can cause liquid slugging and damage to the compressor. This improves the airflow effect, extends the life of the air conditioner, and enhances the user experience.

[0051] Optionally, the air conditioner determines the liquid distribution status of the evaporator based on ΔT, including: when ΔT is within a certain temperature range, the air conditioner determines that the liquid distribution status of the evaporator is poor. Specifically, the temperature range can be (1℃, 3℃). Thus, when ΔT... ai <T1 or T ao When the temperature is less than T2, and ΔT is within the temperature range, the evaporator's liquid distribution is poor. In this case, the air conditioner will implement an anti-freeze strategy to more accurately determine whether the evaporator is frozen. Therefore, when the evaporator's liquid distribution is poor, the anti-freeze strategy will be implemented to prevent the evaporator from freezing, thus preventing the air conditioner from continuing to operate with excessive ice buildup. This also prevents water leakage and poor evaporation, which can lead to liquid refrigerant entering the compressor and causing damage due to liquid slugging. This improves airflow efficiency, extends the life of the air conditioner, and enhances the user experience.

[0052] Optionally, after the air conditioner implements the anti-freeze strategy, the system further includes: if the duration of the anti-freeze strategy reaches a third time threshold, the air conditioner controls the outdoor fan to start. The air conditioner then continues to operate in cooling mode. Specifically, the third time threshold can be 5 minutes. In this way, after the anti-freeze protection is implemented, the evaporator of the air conditioner returns to an unfrozen state, automatically restarting the air conditioner. This improves the air conditioner's intelligence level, prevents excessive indoor temperature increases due to prolonged inactivity, thus avoiding poor user comfort and enhancing the user experience.

[0053] Combination Figure 2 As shown in the embodiments of this disclosure, another method for controlling an air conditioner is provided, including:

[0054] S201, When the air conditioner is in cooling mode, the air conditioner determines the indoor ambient temperature T. ai Outdoor ambient temperature T ao The current airflow velocity V1 and the stable airflow velocity V2 of the indoor fan.

[0055] S202, Air conditioner according to T ai T ao V1 and V2, adjust the set temperature T s .

[0056] S203, Air conditioner according to T s and T ai It controls the operating status of the compressor, outdoor fan and indoor fan to achieve anti-freeze protection.

[0057] The method for controlling an air conditioner provided in this disclosure can be used to adjust the indoor ambient temperature T. ai Outdoor ambient temperature T aoThe current airflow velocity V1 and the stable airflow velocity V2 of the indoor fan are used to adjust the set temperature T. s This system controls the operating status of the compressor, outdoor fan, and indoor fan to achieve anti-freeze protection. It allows for a more accurate assessment of the evaporator's freezing status and the implementation of anti-freeze strategies, preventing the evaporator from freezing. This avoids the air conditioner continuing to operate with excessive ice buildup, preventing leaks and poor evaporation, and preventing liquid refrigerant from entering the compressor and causing damage. It also improves airflow efficiency, extends the air conditioner's lifespan, and enhances the user experience.

[0058] Optionally, the air conditioner adjusts the set temperature T s Including: Air conditioner control T s With temperature adjustment rate ΔT v Increase. Specifically, t v The value can be 0.5℃ / 2min. Thus, based on the indoor ambient temperature T... ai Outdoor ambient temperature T ao The current airflow velocity V1 and the stable airflow velocity V2 of the indoor fan are controlled by T. s With temperature adjustment rate ΔT v Increased and controlled operation of the compressor, outdoor fan, and indoor fan enables anti-freeze protection. This allows for more accurate assessment of evaporator freezing conditions and the implementation of anti-freeze strategies, preventing evaporator freezing and thus avoiding excessive ice buildup in the air conditioner. It also prevents leaks, poor evaporation, liquid refrigerant entering the compressor and causing liquid slugging, which can damage the compressor. Furthermore, it improves airflow efficiency, extends the air conditioner's lifespan, and enhances the user experience.

[0059] Optionally, the air conditioner is based on T s and T ai To control the operating status of the compressor, outdoor fan, and indoor fan to achieve anti-freeze protection, including: [T...] s >T ai In this situation, the air conditioner controls the compressor and outdoor fan to stop running, while the indoor fan continues to operate. Thus, based on the indoor ambient temperature T... ai Outdoor ambient temperature T ao The current airflow velocity V1 and the stable airflow velocity V2 of the indoor fan are used to adjust the set temperature T. s In T sWhen the temperature is higher than the indoor ambient temperature, the compressor and outdoor fan stop operating, while the indoor fan continues to run to achieve anti-freeze protection. This allows for a more accurate assessment of the evaporator's freezing status and the implementation of anti-freeze strategies, preventing the evaporator from freezing. This avoids the air conditioner continuing to operate despite excessive ice buildup, preventing leaks and poor evaporation, and preventing liquid refrigerant from entering the compressor and causing damage. It also improves airflow efficiency, extends the air conditioner's lifespan, and enhances the user experience.

[0060] Combination Figure 3 As shown in the embodiments of this disclosure, another method for controlling an air conditioner is provided, including:

[0061] S301, when the air conditioner is in cooling mode, the air conditioner determines the indoor ambient temperature T. ai Outdoor ambient temperature T ao The current airflow velocity V1 and the stable airflow velocity V2 of the indoor fan.

[0062] S302, in T ai <T1 or T ao When the value is less than T2, the attenuation coefficient f = V1 / V2 is used to calculate the air outlet velocity of the indoor unit of the air conditioner.

[0063] S303, when f < f1, the air conditioner determines the detected indoor coil temperature T.

[0064] S304, when T < T3, the air conditioner determines that the coil sensor is abnormal.

[0065] S305, when T>T3, the air conditioner's coil position is incorrectly determined.

[0066] S306, In case of coil sensor malfunction or improper coil position, the air conditioner controls the set temperature T. s With temperature adjustment rate ΔT v Increase.

[0067] S307, in T s >T ai In this situation, the air conditioner controls the compressor and outdoor fan to stop running, while the indoor fan continues to run.

[0068] S308, when the duration of the air conditioner's anti-freeze strategy reaches the third duration threshold, the air conditioner controls the outdoor fan to start.

[0069] S309, Air conditioner control: The air conditioner continues to operate in cooling mode.

[0070] Where T1 is the first temperature threshold, T2 is the second temperature threshold, f1 is the attenuation coefficient threshold, and T3 is the third temperature threshold.

[0071] The method for controlling an air conditioner provided in this disclosure can be used to adjust the indoor ambient temperature T. ai Outdoor ambient temperature T ao The current airflow velocity V1 of the indoor fan, the stable airflow velocity V2 of the indoor fan, and the indoor coil temperature T are all set to the set temperature T. s In T s When the temperature is higher than the indoor ambient temperature, the compressor and outdoor fan stop operating, while the indoor fan continues to run to achieve anti-freeze protection. This allows for a more accurate assessment of the evaporator's freezing status and the implementation of anti-freeze strategies, preventing the evaporator from freezing. This avoids the air conditioner continuing to operate with excessive ice buildup, preventing leaks and poor evaporation, and preventing liquid refrigerant from entering the compressor and causing damage. It also improves airflow efficiency, extends the air conditioner's lifespan, and enhances the user experience. After anti-freeze protection is activated, the evaporator returns to its unfrozen state, automatically restarting the air conditioner. This enhances the air conditioner's intelligence and prevents excessively high indoor temperatures due to prolonged inactivity, thus improving the user experience.

[0072] Combination Figure 4 As shown in the embodiments of this disclosure, a method for controlling an air conditioner is provided, comprising:

[0073] S401, When the air conditioner is in cooling mode, the air conditioner determines the indoor ambient temperature T. ai Outdoor ambient temperature T ao The current airflow velocity V1 and the stable airflow velocity V2 of the indoor fan.

[0074] S402, the air conditioner is based on T ai T ao V1 and V2 control the air conditioner to implement anti-freeze strategies.

[0075] S403, the air conditioner is based on T ai T ao , and △T, control the air conditioner to implement the anti-freeze strategy.

[0076] Where, △T=T 出口 -T 进口 △T represents the inlet and outlet temperature difference of each circuit of the indoor unit evaporator. 出口 T represents the outlet temperature of each evaporator circuit in the indoor unit. 进口 This refers to the inlet temperature of each circuit of the indoor unit's evaporator.

[0077] The method for controlling an air conditioner provided in this disclosure can be used to adjust the indoor ambient temperature T. ai Outdoor ambient temperature T aoThe current airflow velocity V1 and the stable airflow velocity V2 of the indoor fan control the air conditioner to implement the anti-freeze strategy. This is based on the indoor ambient temperature T. ai Outdoor ambient temperature T ao The temperature difference ΔT between the inlet and outlet of each evaporator circuit in the indoor unit controls the air conditioner's anti-freezing strategy. This allows for a more accurate assessment of the evaporator's freezing status and the implementation of anti-freezing measures, preventing the evaporator from freezing. This avoids the air conditioner continuing to operate with excessive ice buildup, preventing leaks and poor evaporation, and preventing liquid refrigerant from entering the compressor and causing damage. It also improves airflow efficiency, extends the air conditioner's lifespan, and enhances the user experience.

[0078] Optionally, the air conditioner is based on T ai T ao The temperature difference ΔT between the inlet and outlet of each circuit of the indoor unit evaporator is used to control the air conditioner to implement an anti-freeze strategy, including: [The text abruptly ends here, so the translation stops as well.] ai <T1 or T ao When T < T2, the air conditioner executes an anti-freeze strategy based on ΔT. Thus, in T... ai <T1 or T ao In cases <T2, the evaporator is prone to freezing protection. If the evaporator freezing is determined solely by the coil temperature, the evaporator or low-pressure pipe may freeze when there is poor liquid distribution, improper coil positioning, or a faulty coil sensor. However, the air conditioner will not execute the anti-freeze strategy. Instead, the anti-freeze strategy is controlled based on the inlet and outlet temperature difference ΔT of each circuit of the indoor unit's evaporator. This allows for a more accurate determination of whether the evaporator is frozen. In cases of poor liquid distribution, the freezing status of the evaporator can be more accurately assessed, and the anti-freeze strategy can be implemented to prevent the evaporator from freezing. This also prevents the air conditioner from continuing to operate despite excessive ice buildup, avoiding water leakage and poor evaporation, which can lead to liquid refrigerant entering the compressor and causing damage. This improves airflow efficiency, extends the lifespan of the air conditioner, and enhances the user experience.

[0079] Optionally, the air conditioner controls the air conditioner to execute an anti-freeze strategy based on ΔT, including: the air conditioner determines the liquid distribution status of the evaporator based on ΔT. If the liquid distribution status of the evaporator is poor, the air conditioner controls the air conditioner to execute the anti-freeze strategy. Thus, in T... ai <T1 or T aoIn cases <T2, the liquid distribution status of the evaporator is determined based on the inlet and outlet temperature difference ΔT of each circuit of the indoor unit evaporator. If the liquid distribution status of the evaporator is poor, the air conditioner is controlled to implement an anti-freeze strategy, which will more accurately determine whether the evaporator is frozen. Therefore, when the liquid distribution of the evaporator is poor, the freezing status of the evaporator is more accurately judged and the anti-freeze strategy is implemented to avoid the evaporator freezing. This prevents the air conditioner from continuing to operate with excessive ice buildup, avoids water leakage and poor evaporation, and prevents liquid refrigerant from entering the compressor, which can cause liquid slugging and damage to the compressor. This improves the airflow effect, extends the life of the air conditioner, and enhances the user experience.

[0080] Optionally, the air conditioner determines the liquid distribution status of the evaporator based on ΔT, including: when ΔT is within a certain temperature range, the air conditioner determines that the liquid distribution status of the evaporator is poor. Specifically, the temperature range can be (1℃, 3℃). Thus, when ΔT... ai <T1 or T ao When the temperature is less than T2, and ΔT is within the temperature range, the evaporator's liquid distribution is poor. In this case, the air conditioner will implement an anti-freeze strategy to more accurately determine whether the evaporator is frozen. Therefore, when the evaporator's liquid distribution is poor, the anti-freeze strategy will be implemented to prevent the evaporator from freezing, thus preventing the air conditioner from continuing to operate with excessive ice buildup. This also prevents water leakage and poor evaporation, which can lead to liquid refrigerant entering the compressor and causing damage due to liquid slugging. This improves airflow efficiency, extends the life of the air conditioner, and enhances the user experience.

[0081] Combination Figure 5 As shown, this embodiment of the present disclosure provides a device 200 for controlling an air conditioner, including a determining module 501 and a control module 502. The determining module 501 is configured to determine the indoor ambient temperature T when the air conditioner is in cooling mode. ai Outdoor ambient temperature T ao The current airflow velocity V1 and the stable airflow velocity V2 of the indoor fan are set. Control module 502 is configured to adjust the airflow velocity according to T. ai T ao V1 and V2 control the air conditioner to implement anti-freeze strategies.

[0082] The device for controlling an air conditioner provided in this disclosure is advantageous in controlling the air conditioner to execute an anti-freezing strategy based on the indoor ambient temperature Tai, the outdoor ambient temperature Tao, the current airflow speed V1 of the indoor fan, and the stable airflow speed V2 of the indoor fan. This facilitates a more accurate assessment of the evaporator's freezing status and the execution of the anti-freezing strategy, preventing the evaporator from freezing. This avoids the air conditioner continuing to operate despite excessive ice buildup, preventing water leakage and poor evaporation, and preventing liquid refrigerant from entering the compressor and causing damage due to liquid slugging. Ultimately, this improves airflow efficiency, extends the air conditioner's lifespan, and enhances the user experience.

[0083] Combination Figure 6 As shown in the figure, this disclosure provides a device 300 for controlling an air conditioner, including a processor 600 and a memory 601. Optionally, the device may further include a communication interface 602 and a bus 603. The processor 600, communication interface 602, and memory 601 can communicate with each other via the bus 603. The communication interface 602 can be used for information transmission. The processor 600 can call logical instructions in the memory 601 to execute the method for controlling the air conditioner described in the above embodiment.

[0084] Furthermore, the logic instructions in the aforementioned memory 601 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0085] The memory 601, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 600 executes functional applications and data processing by running the program instructions / modules stored in the memory 601, thereby implementing the method for controlling the air conditioner described in the above embodiments.

[0086] The memory 601 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 601 may include high-speed random access memory and may also include non-volatile memory.

[0087] Combination Figure 7As shown, this disclosure provides an air conditioner 100, including: an air conditioner body, and the aforementioned device 200 (300) for controlling the air conditioner. The device 200 (300) for controlling the air conditioner is installed on the product body. The installation relationship described herein is not limited to placement inside the product, but also includes installation connections with other components of the product, including but not limited to physical connections, electrical connections, or signal transmission connections. Those skilled in the art will understand that the device 200 (300) for controlling the air conditioner can be adapted to feasible product bodies to achieve other feasible embodiments.

[0088] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for controlling an air conditioner.

[0089] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0090] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0091] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0092] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0093] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to implement this embodiment according to actual needs. In addition, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0094] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A method for controlling an air conditioner, characterized by, The method comprises: In the case that the air conditioner is in the cooling mode, determine the indoor environment temperature T ai , the outdoor environment temperature T ao , the current air outlet speed V1 of the indoor fan and the stable air outlet speed V2 of the indoor fan; According to T ai , T ao , V1 and V2, controlling the air conditioner to execute an anti-freezing strategy, comprising: In T ai In the case of T ao In the case of T2, determining an attenuation coefficient f of the air outlet speed of the indoor unit according to V1 and V2; controlling the air conditioner to execute the anti-freezing strategy according to f and the inner coil temperature T; wherein T1 is a first temperature threshold, and T2 is a second temperature threshold. controlling the air conditioner to execute the anti-freezing strategy according to f and the inner coil temperature T, comprising: determining whether to detect T according to f; controlling the air conditioner to execute the anti-freezing strategy according to T, comprising: the air conditioner determining whether the coil sensor is abnormal and whether the coil position is improper according to T; in the case that the coil sensor is abnormal or the coil position is improper, the air conditioner controls the air conditioner to execute the anti-freezing strategy.

2. The method of claim 1, wherein, determining f according to V1 and V2, comprising: calculating f = V1 / V2.

3. The method of claim 1, wherein, determining whether to detect T according to f, comprising: in the case that f < f1, determining to detect T; wherein f1 is a decay coefficient threshold.

4. The method according to any one of claims 1 to 3, characterized in that, controlling the air conditioner to execute the anti-freezing strategy, comprising: Adjusting the set temperature T s ; According to T s and T ai , the operating states of the compressor, the outdoor fan, and the indoor fan are controlled to achieve freeze protection.

5. An apparatus for controlling an air conditioner, characterized by comprising: The method comprises: The determining module is configured to determine, when the air conditioner is in the cooling mode, the indoor environment temperature T ai , the outdoor environment temperature T ao , the current air outlet speed V1 of the indoor fan, and the stable air outlet speed V2 of the indoor fan. a control module configured to control the air conditioner to execute an anti-freezing strategy according to T ai , T ao , V1 and V2, including: In T ai In the case of T ao In the case of T 2, determine the attenuation coefficient f of the air outlet speed of the indoor unit according to V1 and V2; control the air conditioner to execute the anti-freezing strategy according to f and the inner coil temperature T; wherein T1 is a first temperature threshold, and T2 is a second temperature threshold. controlling the air conditioner to execute the anti-freezing strategy according to f and the inner coil temperature T, comprising: determining whether to detect T according to f; controlling the air conditioner to execute the anti-freezing strategy according to T, comprising: the air conditioner determining whether the coil sensor is abnormal and whether the coil position is improper according to T; in the case that the coil sensor is abnormal or the coil position is improper, the air conditioner controls the air conditioner to execute the anti-freezing strategy.

6. An apparatus for controlling an air conditioner, comprising a processor and a memory having stored program instructions, characterized in that, The processor is configured to execute the method for controlling the air conditioner according to any one of claims 1 to 4 when the program instructions are executed.

7. An air conditioner characterized by comprising: The method comprises: an air conditioner body; The device for controlling the air conditioner according to claim 5 or 6 is installed in the air conditioner body.

8. A storage medium storing program instructions, characterized in that, The program instructions are executed to execute the method for controlling the air conditioner according to any one of claims 1 to 4.

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