Method, device for controlling air conditioner and air conditioner

Abstract

The application relates to the technical field of air conditioner control, and discloses a method for controlling an air conditioner, which comprises the following steps: obtaining a fault duration of a fan when the air conditioner fan is restarted after a locked-rotor fault is determined; controlling the air conditioner to stop a refrigeration mode and start a dehumidification mode when the fault duration is lower than a set fault threshold and the air conditioner is running in the refrigeration mode; determining a target output load of the fan when the fan is determined to be stably running; and controlling the fan according to the target output load. According to the scheme, the target output load conforming to the current temperature and humidity can be determined when the air conditioner fan is restarted after a locked-rotor fault is determined, so that the damage of water condensation caused by rapid changes of temperature and humidity to the fan can be reduced when the fan is controlled according to the target output load, the service life of the fan is prolonged, and the service life of the air conditioner is prolonged. The application further discloses an apparatus for controlling an air conditioner and the air conditioner.

Description

Technical Field

[0001] This application relates to the field of air conditioning control technology, such as a method, apparatus and air conditioner for controlling an air conditioner. Background Technology

[0002] As people's living standards continue to improve, smart home appliances are gradually becoming a part of users' lives. Currently, air conditioners have brought users a more comfortable indoor environment, and the protection of air conditioner components has become a focus of user attention.

[0003] Currently, air conditioner fans are prone to stalling after running for a period of time. Typically, users will stop the air conditioner to resolve the stalling issue and then turn it back on. However, if the stalling problem is resolved too quickly, the temperature and humidity may change too rapidly when the air conditioner restarts and runs in cooling mode, leading to condensation and accelerating oxidation on the fan surface and even the bearings, thus affecting the fan's lifespan.

[0004] Therefore, how to control the air conditioner fan to reduce the damage caused by condensation has become an urgent technical problem to be solved. Summary of the Invention

[0005] 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.

[0006] This disclosure provides a method, apparatus, and air conditioner for controlling an air conditioner, so as to reduce the damage caused to the air conditioner fan by condensation through reasonable control of the air conditioner fan.

[0007] In some embodiments, the method for controlling an air conditioner includes: when restarting the air conditioner after determining that the air conditioner fan has a stall fault, obtaining the duration of the fan fault; when the duration of the fault is lower than a set fault threshold and the air conditioner is running in cooling mode, controlling the air conditioner to turn off the cooling mode and start the dehumidification mode; when determining that the fan is running stably, determining the target output load of the fan; and controlling the fan according to the target output load.

[0008] In some embodiments, the method for controlling an air conditioner includes: obtaining the current temperature load output and the current humidity load output; calculating the change in temperature load output and the change in humidity load output; and determining the target output load of the fan based on the current temperature load output, the current humidity load output, the change in temperature load output, and the change in humidity load output.

[0009] In some embodiments, the method for controlling an air conditioner includes: determining a first output load by summing the current temperature load output and the change in temperature load output; determining a second output load by summing the current humidity load output and the change in humidity load output; and determining a target output load for a fan based on the first output load and the second output load.

[0010] In some embodiments, the method for controlling an air conditioner includes: determining the first output load as the target output load of a fan when the first output load is greater than the second output load; and determining the second output load as the target output load of a fan when the first output load is less than the second output load.

[0011] In some embodiments, the method for controlling the air conditioner includes: acquiring current values ​​collected by a current sensor and wind pressure values ​​collected by a wind pressure sensor; and determining that the air conditioner fan has a stall fault when the current value indicates an abnormal current or the wind pressure value indicates an abnormal wind pressure.

[0012] In some embodiments, the method for controlling the air conditioner includes: determining that the fan is operating stably when the air conditioner compressor is running according to a preset load output scheme and continues to run for a preset duration.

[0013] In some embodiments, the method for controlling an air conditioner includes: obtaining a temperature value collected by a temperature sensor and a humidity value collected by a humidity sensor; and controlling a fan to turn off after a preset time when the temperature value is within a preset temperature range and the humidity value is within a preset humidity range.

[0014] In some embodiments, the device for controlling the air conditioner includes: an acquisition module configured to acquire the duration of a fan failure after restarting the air conditioner following a determined stall fault; a first control module configured to control the air conditioner to turn off the cooling mode and start the dehumidification mode when the duration of the failure is less than a set fault threshold and the air conditioner is running in cooling mode; a determination module configured to determine the target output load of the fan when the fan is determined to be running stably; and a second control module configured to control the fan according to the target output load.

[0015] In some embodiments, the apparatus for controlling an air conditioner includes a processor and a memory storing program instructions, the processor being configured to execute the aforementioned method for controlling an air conditioner when the program instructions are executed.

[0016] In some embodiments, the air conditioner includes the aforementioned means for controlling the air conditioner.

[0017] The method for controlling an air conditioner provided in this disclosure obtains the duration of the fan failure after restarting following a determined fan stall fault. If the failure duration is below a set fault threshold and the air conditioner is running in cooling mode, the air conditioner is controlled to shut off cooling mode and activate dehumidification mode. Furthermore, if the fan is operating stably, a target output load for the fan is determined, and the fan is controlled according to this target output load. This approach enables the determination of a target output load that matches the current temperature and humidity conditions when the air conditioner fan restarts after a stall fault. By controlling the fan according to this target output load, damage caused by condensation due to rapid temperature and humidity changes can be reduced, extending fan life and improving the air conditioner's service life.

[0018] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0019] 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:

[0020] Figure 1 This is a schematic diagram of a method for controlling an air conditioner provided in an embodiment of this disclosure;

[0021] Figure 2 This is a schematic diagram of a method for determining a target output load provided in an embodiment of this disclosure;

[0022] Figure 3 This is a schematic diagram of another method for determining a target output load provided in an embodiment of this disclosure;

[0023] Figure 4 This is a schematic diagram of a method for determining a stalled fan according to an embodiment of the present disclosure;

[0024] Figure 5 This is a schematic diagram of a device for controlling an air conditioner provided in an embodiment of this disclosure;

[0025] Figure 6 This is a schematic diagram of another device for controlling an air conditioner provided in an embodiment of this disclosure. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] Unless otherwise stated, the term "multiple" means two or more.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] In this embodiment of the disclosure, the terminal device refers to an electronic device with wireless connectivity. The terminal device can communicate with the aforementioned smart home appliances by connecting to 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.

[0034] Figure 1 This is a schematic diagram of a method for controlling an air conditioner provided in an embodiment of this disclosure; combined with Figure 1 As shown in the embodiments of this disclosure, a method for controlling an air conditioner is provided, comprising:

[0035] S11, when the air conditioner is restarted after a stall fault is detected, the air conditioner obtains the duration of the fan fault.

[0036] S12, if the fault duration is less than the set fault threshold and the air conditioner is running in cooling mode, the air conditioner controls itself to turn off the cooling mode and start the dehumidification mode.

[0037] S13, under the condition that the fan is operating stably, the air conditioner determines the target output load of the fan.

[0038] S14, the air conditioner controls the fan according to the target output load.

[0039] In this solution, it is possible to pre-determine whether the air conditioner fan is stalled. Specifically, the air conditioner can determine whether the fan is stalled using current and air pressure sensors installed within it. For example, the air conditioner can acquire the current value collected by the current sensor and the air pressure value collected by the air pressure sensor; if either the current value indicates an abnormal current or the air pressure value indicates an abnormal air pressure, a stalled fan fault is determined. Thus, after determining that a stalled fan fault exists, the air conditioner can be shut down and alarmed, and after the stall fault is repaired, the air conditioner can be restarted, and the duration of the fan fault can be obtained. The fault duration refers to the time between the air conditioner shutting down and alarming and the air conditioner restarting. This method enables accurate acquisition of the fan fault duration.

[0040] Furthermore, the air conditioner can compare the acquired fan failure duration with a set failure threshold. If the failure duration is lower than the set threshold and the air conditioner is running in cooling mode, it can control the air conditioner to shut down the cooling mode and start the dehumidification mode. Here, the set failure threshold can be preset based on actual conditions. As an example, the set failure threshold can range from 0 to 1 hour; as a preferred option, the set failure threshold can be 30 minutes. In this way, the possibility of rapid temperature and humidity changes when the air conditioner restarts and runs in cooling mode can be reduced.

[0041] Furthermore, the system can ensure stable fan operation when the air conditioner compressor operates according to a preset load output scheme and continues to operate for a preset duration. Here, the preset load output scheme can be 50% temperature load and 50% humidity load, with a preset duration of 3 minutes. In this way, once stable fan operation is confirmed, the air conditioner can determine the target output load for the fan and control the fan accordingly.

[0042] The method for controlling an air conditioner provided in this disclosure obtains the duration of the fan failure after restarting following a determined fan stall fault. If the failure duration is below a set fault threshold and the air conditioner is running in cooling mode, the air conditioner is controlled to shut off cooling mode and activate dehumidification mode. Furthermore, if the fan is operating stably, a target output load for the fan is determined, and the fan is controlled according to this target output load. This approach enables the determination of a target output load that matches the current temperature and humidity conditions when the air conditioner fan restarts after a stall fault. By controlling the fan according to this target output load, damage caused by condensation due to rapid temperature and humidity changes can be reduced, extending fan life and improving the air conditioner's service life.

[0043] Figure 2 This is a schematic diagram of a method for determining a target output load provided in an embodiment of this disclosure; combined with Figure 2 As shown, optionally, in step S13, the air conditioner determines the target output load of the fan, including:

[0044] S21, the air conditioner obtains the current temperature load output and the current humidity load output.

[0045] S22, Air conditioning calculation of temperature load output change and humidity load output change.

[0046] S23, the air conditioner determines the target output load of the fan based on the current temperature load output, the current humidity load output, the change in temperature load output, and the change in humidity load output.

[0047] In this scheme, the air conditioner can obtain the current temperature load output and the current humidity load output, and can calculate the changes in temperature load output and humidity load output. Here, the air conditioner can calculate the change in temperature load output using a pre-stored PID algorithm. Specifically, the change in temperature load output ΔU(K) = Kp*(E(t)-E(t-1))+Ki*E(t)+Kd*(E(t)-2E(t-1)+E(t-2)); where ΔU(K) is the change in temperature load output, Kp, Ki, and Kd are pre-stored adjustment coefficients, E(t) is the difference between the current temperature and the set temperature, E(t-1) is the difference between the current temperature and the set temperature in the previous sampling period, and E(t-2) is the difference between the current temperature and the set temperature in the period before the previous sampling period. As an example, the sampling period can range from 5 to 60 seconds, with 10 seconds being a preferred option; the adjustment coefficient Kp can range from 0 to 100, with 20 being a preferred option; the adjustment coefficient Ki can range from 0 to 100, with 3 being a preferred option; and the adjustment coefficient Kd can range from 0 to 100, with 0 being a preferred option. With this approach, a more accurate calculation of temperature load output changes can be achieved using a PID algorithm; correspondingly, the air conditioner can also calculate humidity load output changes using a pre-stored PID algorithm. Specifically, the change in humidity load output is: △Uh(K)=-1*(Kph*(Eh(t)-Eh(t-1))+Kih*Eh(t)+Kdh*(Eh(t)-2Eh(t-1)+Eh(t-2)); where △Uh(K) is the change in humidity load output, Kph, Kih, and Kdh are pre-stored adjustment coefficients, Eh(t) is the difference between the current humidity and the set humidity, Eh(t-1) is the difference between the current humidity and the set humidity in the previous cycle, and Eh(t-2) is the difference between the current humidity and the set humidity in the cycle preceding the previous sampling cycle. As an example The sampling period can range from 5 to 60 seconds, with 10 seconds being the preferred option. This approach, combined with a PID algorithm, allows for more accurate calculation of humidity load output changes. Furthermore, by combining the current temperature load output, current humidity load output, temperature load output changes, and humidity load output changes, the target output load of the fan can be determined. This method, by combining the current temperature load output, current humidity load output, temperature load output changes, and humidity load output changes, accurately determines the target output load of the fan, providing a precise data foundation for fan control.

[0048] Figure 3 This is a schematic diagram of another method for determining a target output load provided in this disclosure embodiment; combined with Figure 3As shown, optionally, in step S23, the air conditioner determines the target output load of the fan based on the current temperature load output, the current humidity load output, the change in temperature load output, and the change in humidity load output, including:

[0049] S31, the air conditioner determines the first output load as the sum of the current temperature load output and the temperature load output change.

[0050] S32, the air conditioner determines the second output load as the sum of the current humidity load output and the change in humidity load output.

[0051] S33, the air conditioner determines the target output load of the fan based on the first output load and the second output load.

[0052] In this solution, the air conditioner can obtain a first output load and a second output load. Here, the first output load = the current temperature load output + the change in temperature load output; for example, if the current temperature load output is 50% and the change in temperature load output is 2%, then the first output load = 50% + 2% = 52%. The second output load = the current humidity load output + the change in humidity load output; for example, if the current humidity load output is 50% and the change in humidity load output is 3%, then the second output load = 50% + 3% = 53%. Thus, after the air conditioner obtains the first and second output loads, it can combine these loads to determine the current temperature and humidity output conditions, thereby more accurately determining the target output load of the fan.

[0053] Optionally, S33, the air conditioner determines the target output load of the fan based on the first output load and the second output load, including:

[0054] When the first output load is greater than the second output load, the air conditioner will determine the first output load as the target output load of the fan.

[0055] If the first output load is less than the second output load, the air conditioner will determine the second output load as the target output load for the fan.

[0056] In this solution, after the air conditioner obtains the first output load and the second output load, it can determine the relationship between the magnitude of the first output load and the second output load. If the first output load is greater than the second output load, the air conditioner determines the first output load as the target output load of the fan; if the first output load is less than the second output load, the air conditioner determines the second output load as the target output load of the fan. This solution, by combining the comparison results of the first and second output loads, can more accurately determine the target output load of the fan.

[0057] Figure 4This is a schematic diagram of a method for determining a stalled fan according to an embodiment of this disclosure; combined with Figure 4 As shown, optionally, a stalled air conditioner fan can be identified using the following methods:

[0058] S41, the air conditioner acquires the current value collected by the current sensor and the wind pressure value collected by the wind pressure sensor.

[0059] S42, if the current value indicates an abnormal current or the wind pressure value indicates an abnormal wind pressure, the air conditioner determines that the air conditioner fan has a stall fault.

[0060] In this solution, the air conditioner is also equipped with a current sensor and a wind pressure sensor. Specifically, the primary terminal of the current sensor can be connected to the motor winding wire, and the secondary terminal can be connected to the power supply and controller input. The wind pressure sensor can be placed inside the fan's duct, connected to the power supply, and its output terminal connected to the controller input. In this way, the air conditioner can obtain the current value collected by the current sensor and the wind pressure value collected by the wind pressure sensor. If either the current value or the wind pressure value indicates an abnormality, the air conditioner determines that its fan has a stall fault. In one case, if the current value collected by the current sensor is 7 times the rated current and remains so for a second preset time, then the current value is determined to be abnormal. The second preset time can be 5 seconds. In another case, if the wind pressure value measured by the wind pressure sensor is lower than 10% of the normal ventilation wind pressure, or if the wind pressure value measured by the wind pressure sensor reaches 90% of the maximum wind pressure of the main ventilation fan under operating conditions, then the wind pressure value is determined to be abnormal. In this way, by combining the current value and wind pressure value collected during fan operation, it is possible to accurately determine whether the air conditioner fan has a stall fault.

[0061] Alternatively, stable fan operation can be determined by the following methods:

[0062] When the air conditioner compressor operates according to the preset load output scheme and continues to operate for a preset time, the air conditioner determines that the fan is operating stably.

[0063] In this solution, the air conditioner can determine whether the fan is operating stably when its compressor operates according to a preset load output scheme and continues to operate for a preset duration. The preset load output scheme can be 50% temperature load and 50% humidity load, with a preset duration of 3 minutes. This method allows for precise determination of whether the air conditioner fan is operating stably.

[0064] Optionally, after controlling the fan according to the target output load, the method further includes:

[0065] The air conditioner obtains temperature values ​​from a temperature sensor and humidity values ​​from a humidity sensor.

[0066] When the temperature and humidity are within the preset temperature and humidity ranges, the air conditioner control fan will turn off after a preset time.

[0067] In this solution, a temperature sensor and a humidity sensor are also installed around the air conditioner fan. Specifically, the air conditioner can obtain the temperature value collected by the temperature sensor and the humidity value collected by the humidity sensor. Further, when the temperature value is within a preset temperature range and the humidity value is within a preset humidity range, the air conditioner controls the fan to turn off after a preset time. Here, the preset time is 3 minutes. The preset temperature range can be determined as follows: obtain the target temperature and steady-state temperature of the air conditioner, and determine the preset temperature range based on the target temperature and steady-state temperature. Specifically, the steady-state temperature is the range within which the target temperature can be reached. The preset temperature range is determined based on the target temperature and steady-state temperature, including: target temperature - steady-state temperature ≤ preset temperature range ≤ target temperature + steady-state temperature. As an example, if the target temperature is 25℃ and the steady-state temperature is 0.5℃, then the preset temperature range is 24.5℃~25.5℃. The preset humidity range can be determined as follows: obtain the target humidity and steady-state humidity of the air conditioner, and determine the preset humidity range based on the target humidity and steady-state humidity. Specifically, the steady-state humidity is the range within which the target humidity can be reached. Based on the target humidity and steady-state humidity of the air conditioner, a preset humidity range is determined, including: target humidity - steady-state humidity ≤ preset humidity range ≤ target humidity + steady-state humidity. For example, if the target humidity is 55% and the steady-state humidity is 3%, then the preset humidity range is 52% to 58%. This method allows for precise determination of when the air conditioner fan should stop, avoiding compressor damage caused by temporary shutdowns.

[0068] Figure 5 This is a schematic diagram of a device for controlling an air conditioner provided in an embodiment of this disclosure; combined with Figure 5 As shown, this embodiment of the present disclosure provides an apparatus for controlling an air conditioner, including an acquisition module 51, a first control module 52, a determination module 53, and a second control module 54. The acquisition module 51 is configured to acquire the duration of the fan failure after restarting the air conditioner following a determined stall fault. The first control module 52 is configured to control the air conditioner to turn off the cooling mode and start the dehumidification mode when the failure duration is lower than a set fault threshold and the air conditioner is running in cooling mode. The determination module 53 is configured to determine the target output load of the fan when it is determined that the fan is running stably. The second control module 54 is configured to control the fan according to the target output load.

[0069] The device for controlling an air conditioner provided in this disclosure obtains the duration of the fan failure after restarting following a determined fan stall fault. If the failure duration is below a set fault threshold and the air conditioner is running in cooling mode, the device controls the air conditioner to shut off cooling mode and activate dehumidification mode. Furthermore, if the fan is operating stably, the device determines the target output load for the fan and controls the fan accordingly. This approach enables the determination of a target output load that matches the current temperature and humidity conditions when the air conditioner fan restarts after a stall fault. By controlling the fan according to this target output load, damage caused by condensation due to rapid temperature and humidity changes can be reduced, extending fan life and improving the air conditioner's service life.

[0070] Figure 6 This is a schematic diagram of another device for controlling an air conditioner provided in an embodiment of this disclosure; combined with Figure 6 As shown, this disclosure provides an apparatus for controlling an air conditioner, including a processor 100 and a memory 101. Optionally, the apparatus may further include a communication interface 102 and a bus 103. The processor 100, communication interface 102, and memory 101 can communicate with each other via the bus 103. The communication interface 102 can be used for information transmission. The processor 100 can call logical instructions in the memory 101 to execute the method for controlling the air conditioner described in the above embodiment.

[0071] Furthermore, the logic instructions in the aforementioned memory 101 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0072] The memory 101, 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 100 executes functional applications and data processing by running the program instructions / modules stored in the memory 101, that is, it implements the method for controlling the air conditioner in the above embodiments.

[0073] The memory 101 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 101 may include high-speed random access memory and may also include non-volatile memory.

[0074] This disclosure provides an air conditioner that includes the above-described device for controlling the air conditioner.

[0075] The air conditioner provided in this embodiment obtains the duration of the fan failure after restarting following a confirmed fan stall fault. If the failure duration is below a set fault threshold and the air conditioner is running in cooling mode, the air conditioner is controlled to shut off cooling mode and activate dehumidification mode. Furthermore, if the fan is running stably, a target output load for the fan is determined, and the fan is controlled according to this target output load. This solution enables the determination of a target output load that matches the current temperature and humidity conditions when the air conditioner fan restarts after a stall fault. By controlling the fan according to this target output load, damage caused by condensation due to rapid temperature and humidity changes is reduced, extending fan life and improving the air conditioner's service life.

[0076] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for controlling an air conditioner.

[0077] This disclosure provides a computer program product, which includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions that, when executed by a computer, cause the computer to perform the above-described method for controlling an air conditioner.

[0078] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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 coupling or direct coupling or communication connection between the shown or discussed units 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 may be selected to implement this embodiment according to actual needs. Furthermore, 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.

[0083] 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 in that, include: If the air conditioner fan is restarted after a stall fault is confirmed, the fault duration of the fan is obtained. The fault duration refers to the time between the air conditioner stopping alarm and the air conditioner restarting. If the fault duration is less than the set fault threshold and the air conditioner is running in cooling mode, control the air conditioner to turn off the cooling mode and start the dehumidification mode. Determine the target output load of the fan, assuming it is operating stably. The fan is controlled according to the target output load.

2. The method according to claim 1, characterized in that, Determining the target output load of the fan includes: Obtain the current temperature load output and the current humidity load output; Calculate the changes in temperature load output and humidity load output; The target output load of the fan is determined based on the current temperature load output, the current humidity load output, the change in temperature load output, and the change in humidity load output.

3. The method according to claim 2, characterized in that, Determining the target output load of the fan based on the current temperature load output, the current humidity load output, the change in temperature load output, and the change in humidity load output includes: The sum of the current temperature load output and the change in temperature load output is determined as the first output load; The sum of the current humidity load output and the change in humidity load output is determined as the second output load; The target output load of the fan is determined based on the first output load and the second output load.

4. The method according to claim 3, characterized in that, Determining the target output load of the fan based on the first output load and the second output load includes: If the first output load is greater than the second output load, the first output load is determined as the target output load of the fan; If the first output load is less than the second output load, the second output load is determined as the target output load of the fan.

5. The method according to claim 1, characterized in that, The air conditioner is also equipped with a current sensor and a wind pressure sensor. The following methods can be used to determine if the air conditioner fan is stalled: The current value collected by the current sensor and the wind pressure value collected by the wind pressure sensor are obtained; If the current value indicates an abnormal current or the wind pressure value indicates an abnormal wind pressure, it is determined that the air conditioner fan has a stall fault.

6. The method according to claim 1, characterized in that, The following methods can be used to determine stable fan operation: When the air conditioner compressor operates according to a preset load output scheme and continues to operate for a preset duration, the fan is determined to be operating stably.

7. The method according to claim 1, characterized in that, Temperature and humidity sensors are also provided around the fan. After controlling the fan according to the target output load, the method further includes: Obtain the temperature value collected by the temperature sensor and the humidity value collected by the humidity sensor; When the temperature value is within a preset temperature range and the humidity value is within a preset humidity range, the fan is controlled to turn off after a preset time.

8. A device for controlling an air conditioner, characterized in that, include: The acquisition module is configured to acquire the fault duration of the air conditioner fan after restarting it following a confirmed stall fault. The fault duration refers to the time between the air conditioner shutdown alarm and the air conditioner restarting. The first control module is configured to control the air conditioner to turn off the cooling mode and start the dehumidification mode when the fault duration is lower than a set fault threshold and the air conditioner is running in cooling mode. The determination module is configured to determine the target output load of the fan when it is determined that the fan is operating stably; The second control module is configured to control the fan according to the target output load.

9. A device for controlling an air conditioner, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to execute, when running the program instructions, the method for controlling an air conditioner as described in any one of claims 1 to 7.

10. An air conditioner, characterized in that, Includes the device for controlling an air conditioner as described in claim 8 or 9.

Images