Air conditioner and control method thereof, storage medium, program product and execution device

Abstract

The embodiment of the invention provides an air conditioner and a control method thereof, a storage medium, a program product and an execution device, and relates to the technical field of air conditioners, the control method is applied to the air conditioner, and the air conditioner comprises a first temperature detection device used for detecting the outdoor environment temperature. The control method comprises the steps that the working state of the first temperature detection device is detected; when it is detected that the working state of the first temperature detection device is an abnormal state, an outdoor environment temperature value detected by the first temperature detection device is assigned according to a preset control strategy; and the air conditioner is correspondingly controlled to perform fault-tolerant operation according to the assigned outdoor environment temperature value, so that after the first temperature detection device is damaged, the air conditioner can also operate, and the basic refrigerating and heating requirements of a user are met.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and in particular to an air conditioner and a control method thereof, a storage medium, a program product, and an execution device. Background Art

[0002] Current variable-frequency air conditioners generally have multiple temperature sensors on the outdoor side to detect the temperature of multiple locations on the outdoor side, such as an outer ring sensor for detecting the outdoor ambient temperature, an exhaust sensor for detecting the compressor exhaust temperature, an outer disk sensor for detecting the outdoor heat exchanger temperature, etc. The variable-frequency air conditioner then determines the next operating parameters of the variable-frequency air conditioner based on the detected multiple temperature parameters, such as determining the operating frequency of the compressor;

[0003] However, once one or more of the temperature sensors are abnormal, the current common practice is to shut down the air conditioner directly, resulting in users being unable to use it. This affects the user experience, especially in extreme weather conditions, and the stability of the air conditioner operation is poor. Summary of the Invention

[0004] The embodiments of the present application provide an air conditioner and a control method thereof, a storage medium, a program product, and an execution device, aiming to improve the stability of an existing air conditioner.

[0005] In one aspect, an embodiment of the present application provides a method for controlling an air conditioner. The method is applied to an air conditioner including a first temperature detection device for detecting an outdoor ambient temperature. The method includes:

[0006] detecting a working state of the first temperature detection device;

[0007] When it is detected that the working state of the first temperature detection device is an abnormal state, assigning a value to the outdoor ambient temperature value detected by the first temperature detection device according to a preset control strategy;

[0008] The air conditioner is controlled to perform fault-tolerant operation according to the assigned outdoor ambient temperature value.

[0009] In some preferred embodiments, assigning a value to the outdoor ambient temperature value detected by the first temperature detection device according to a preset control strategy includes:

[0010] Get the operating status of the air conditioner and compressor;

[0011] When the air conditioner is turned on for the first time or the compressor has been turned off for longer than a first preset time, assigning a value to the outdoor ambient temperature according to the compressor exhaust temperature and the outdoor heat exchanger temperature; and / or,

[0012] When the air conditioner is not started for the first time and the shutdown time of the compressor is less than or equal to the first preset time, the outdoor ambient temperature value is assigned to the first preset value.

[0013] In some preferred embodiments, when the working state of the first temperature detection device is detected to be abnormal, the compressor exhaust temperature value is T1, the outdoor heat exchanger temperature value is T2, and the outdoor ambient temperature value is T3;

[0014] Assign the outdoor ambient temperature value according to the compressor exhaust temperature value and the outdoor heat exchanger temperature value, including:

[0015] Compare the compressor exhaust temperature value T1 and the outdoor heat exchanger temperature value T2;

[0016] When T1-T2<C, assign T3 to T2;

[0017] When T1-T2≥C, T3 is assigned to the first preset value.

[0018] In some preferred embodiments, after the step of controlling the air conditioner to perform fault-tolerant operation according to the assigned outdoor ambient temperature value, the compressor exhaust temperature value, and the outdoor heat exchanger temperature value, the method further includes:

[0019] The step of comparing the compressor exhaust temperature value T1 and the outdoor heat exchanger temperature value T2 is repeated after a second preset time period.

[0020] In some preferred embodiments, after the step of controlling the air conditioner to perform fault-tolerant operation according to the assigned outdoor ambient temperature value, the method further includes:

[0021] After a third preset time period, obtaining the indoor ambient temperature and the set temperature range;

[0022] When the indoor ambient temperature does not fall within the set temperature range, the assigned outdoor ambient temperature value is adjusted to increase the load of the compressor.

[0023] In some preferred embodiments, after the step of controlling the air conditioner to perform fault-tolerant operation according to the assigned outdoor ambient temperature value, the method further includes:

[0024] When the operation mode of the air conditioner is the heating mode, the defrosting is started after the detected temperature value of the outdoor heat exchanger is lower than the defrosting temperature and lasts for a fourth preset time period.

[0025] In some preferred embodiments, after the step of controlling the air conditioner to perform fault-tolerant operation according to the assigned outdoor ambient temperature value and before the step of detecting that the outdoor heat exchanger temperature value is less than the defrost temperature, the method further includes:

[0026] When the operating mode of the air conditioner is a heating mode, obtaining a temperature value of an outdoor heat exchanger;

[0027] When the outdoor heat exchanger temperature is greater than a first preset threshold, or the air conditioner operates in heating mode for less than a fifth preset time, detecting whether the compressor has been shut down for protection, wherein the first preset threshold is greater than the defrost temperature;

[0028] When it is detected that the compressor is in a shutdown protection state, the assigned outdoor ambient temperature value is modified to a second preset value, wherein the second preset value is the minimum value of the compressor load corresponding to the set outdoor ambient temperature range.

[0029] In some preferred embodiments, after the step of controlling the air conditioner to perform fault-tolerant operation according to the assigned outdoor ambient temperature value, the method further includes:

[0030] Get the total fault-tolerant operation time of the air conditioner;

[0031] When the total fault-tolerant operation time of the air conditioner exceeds a second preset threshold, controlling the air conditioner to shut down; and / or,

[0032] When the air conditioner is in fault-tolerant operation in cooling mode, detect whether the compressor has stopped for protection;

[0033] When it is detected that the compressor is in a shutdown protection state, the assigned outdoor ambient temperature value is modified to a second preset value, wherein the second preset value is the minimum value of the compressor load corresponding to the set outdoor ambient temperature range.

[0034] In a second aspect, an embodiment of the present application provides an air conditioner, including a control device;

[0035] The control device includes: a memory, a processor, and a control program of the liquid storage component stored in the memory and runnable on the processor. When the control device is executed by the processor, the steps of the air conditioner control method as described above are implemented.

[0036] In a third aspect, an embodiment of the present application provides a storage medium, which is a storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the air conditioner control method as described in any one of the above descriptions are implemented.

[0037] In a fourth aspect, an embodiment of the present application provides a program product, which includes a computer program. When the computer program is executed by a processor, the steps of the air conditioner control method as described in any one of the above are implemented.

[0038] In a fifth aspect, an embodiment of the present application provides an execution device, including:

[0039] A detection module, configured to detect a working state of the first temperature detection device;

[0040] an assignment module, configured to assign a value to the outdoor ambient temperature value detected by the first temperature detection device according to a preset control strategy when detecting that the working state of the first temperature detection device is an abnormal state; and

[0041] An execution module is used to control the air conditioner to perform fault-tolerant operation according to the assigned outdoor ambient temperature value.

[0042] The embodiment of the present application assigns an outdoor ambient temperature value detected by the first temperature detection device according to a preset control strategy when it is detected that the working state of the first temperature detection device is abnormal; and controls the air conditioner to perform fault-tolerant operation according to the assigned outdoor ambient temperature value, so that the variable frequency air conditioner can still operate fault-tolerantly after the first temperature detection device for detecting the outdoor ambient temperature fails, thereby meeting the user's basic cooling and heating needs, improving the user experience and the long-term stability of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0044] Figure 1 A flow chart of a first embodiment of the air conditioner control method of the present application;

[0045] Figure 2 A flow chart of a second embodiment of the air conditioner control method of the present application;

[0046] Figure 3 A flowchart of a third embodiment of the air conditioner control method of the present application is provided;

[0047] Figure 4 This is a schematic diagram of the module structure of the execution device of the embodiment of the present application;

[0048] Figure 5 Schematic diagram of the device structure of the hardware operating environment involved in the air conditioner control method in the embodiment of the present application.

[0049] Description of Figure Numbers:

[0050] 10. Detection module; 20. Assignment module; 30. Execution module;

[0051] 1001. Processing device; 1002. ROM; 1003. Storage device; 1004. RAM; 1005. Bus; 1006. I / O interface; 1007. Input device; 1008. Output device; 1009. Communication device. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0053] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0054] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0055] The use of "suitable for" or "configured to" in this application is intended to be open and inclusive language, and does not exclude devices that are adapted or configured to perform additional tasks or steps. In addition, the use of "based on" is intended to be open and inclusive, as a process, step, calculation, or other action that is "based on" one or more stated conditions or values ​​may, in practice, be based on additional conditions or values ​​beyond those stated.

[0056] In this application, the word "exemplary" is used to mean "serving as an example, illustration, or illustration." Any embodiment described in this application as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is given to enable any person skilled in the art to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that one of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in this application.

[0057] Current variable-frequency air conditioners generally have multiple temperature sensors on the outdoor side to detect the temperature of multiple locations on the outdoor side, such as an outer ring sensor for detecting the outdoor ambient temperature, an exhaust sensor for detecting the compressor exhaust temperature, an outer disk sensor for detecting the outdoor heat exchanger temperature, etc. The variable-frequency air conditioner then determines the next operating parameters of the variable-frequency air conditioner based on the detected multiple temperature parameters, such as determining the operating frequency of the compressor;

[0058] However, once one or more of the temperature sensors are abnormal, the current common practice is to shut down the air conditioner directly, resulting in users being unable to use it. This affects the user experience, especially in extreme weather conditions, and the stability of the air conditioner operation is poor.

[0059] Based on this, the embodiment of the present application provides a method for controlling an air conditioner, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the air conditioner control method of the present application.

[0060] In this embodiment, the air conditioner control method includes steps S10 to S30:

[0061] Step S10, detecting the working state of the first temperature detection device;

[0062] Specifically, the working state of the first temperature detection device can be divided into two states: normal working state and abnormal state. The specific detection can be to receive the temperature value detected by the first temperature detection device. When the temperature value falls within the normal temperature range, it is determined that the working state of the first temperature detection device is a normal working state. When the temperature value does not fall within the normal temperature range, it is determined that the first temperature detection device is in an abnormal state. Of course, since the current size of the temperature sensor is different when it is working normally and when an abnormality occurs, it is also possible to detect the working current of the first temperature detection device, and judge the working state of the first temperature detection device by detecting the current size, etc., which is not limited here.

[0063] Furthermore, in some embodiments, the outdoor ambient temperature T0 detected by the first temperature detection device is received in real time, and the set reference range of the outdoor ambient temperature is A℃~B℃. When A≤T0≤B, the temperature detected by the first temperature detection device is within the normal range, the first temperature detection device is normal, and the air conditioner operates normally and according to the user settings.

[0064] When A>T1 or T1>B, it indicates that the temperature detected by the first temperature detection device is abnormal.

[0065] It should be noted that the specific implementation form of the first temperature detection device is not limited and can be in the form of a temperature sensor, a temperature probe, etc., and is not limited here. The range of A°C to B°C in the above embodiment can be set according to the actual application range of the air conditioner and can be a fixed range or a non-fixed range, and is not limited here.

[0066] It can be understood that, due to the execution of step S10, the working state of the first temperature detection device can be detected in real time, and corresponding processing can be quickly performed when an abnormality occurs.

[0067] In addition, when an abnormality is detected, in some embodiments, a fault code can be sent to the internal display and data can be recorded and uploaded to the cloud, thereby reducing after-sales maintenance response time.

[0068] Step S20, when it is detected that the working state of the first temperature detection device is abnormal, assigning a value to the outdoor ambient temperature value detected by the first temperature detection device according to a preset control strategy;

[0069] Specifically, the specific form of the control strategy is not limited. In some cases, it can be to directly assign a specific value to the outdoor ambient temperature value. For example, when the first temperature detection device detects that the outdoor ambient temperature T0 is less than A or greater than B, a value M can be taken between A and B, and the outdoor ambient temperature value detected by the first temperature detection device is directly modified to M. The value of M here can be any value between A and B, or it can be a value that can meet the user's basic cooling and heating needs after testing and has a smaller load on the compressor. Since the load on the compressor is small, the possibility of the compressor protection shutdown is small, and the compressor is not easily damaged, etc., which is not limited here. Of course, in some other embodiments, the outdoor ambient temperature value can also be assigned according to the temperature value detected by other sensors, such as the outdoor heat exchanger temperature value, etc., which is not limited here.

[0070] Step S30: controlling the air conditioner to perform fault-tolerant operation according to the assigned outdoor ambient temperature value.

[0071] Specifically, when the working state of the first temperature detection device is abnormal, the outdoor ambient temperature T0 detected by the first temperature detection device will be less than A or greater than B, that is, it falls outside the range, or there is no feedback to detect the outdoor ambient temperature T0. According to the original temperature value or when the outdoor ambient temperature T0 is not detected, the air conditioner cannot operate. Due to the above-mentioned assignment step, the outdoor ambient temperature T0 detected by the first temperature detection device returns to the range A~B. The subsequent air conditioner can directly select the operating parameters of the air conditioner according to the assigned outdoor ambient temperature value, such as the frequency of the compressor, the frequency of the fan, etc., so that the air conditioner can operate fault-tolerantly, so that the air conditioner will not be unusable due to the abnormal operation of the first temperature detection device.

[0072] More specifically, the air conditioner is controlled to perform fault-tolerant operation according to the assigned outdoor ambient temperature value. This can be done directly based on a reference table, for example, how many degrees Celsius corresponds to the operating frequency of the compressor, or it can be done directly based on a control model, where the assigned outdoor ambient temperature value is input as an input value into the control model, and the control model outputs the operating parameters of the air conditioner, thereby controlling the air conditioner to perform fault-tolerant operation, and so on. There is no limitation here.

[0073] The embodiment of the present application assigns an outdoor ambient temperature value detected by the first temperature detection device according to a preset control strategy when it is detected that the working state of the first temperature detection device is abnormal; and controls the air conditioner to perform fault-tolerant operation according to the assigned outdoor ambient temperature value, so that the variable frequency air conditioner can still operate fault-tolerantly after the first temperature detection device for detecting the outdoor ambient temperature fails, thereby meeting the user's basic cooling and heating needs, improving the user experience and the long-term stability of the air conditioner.

[0074] Reference Figure 2 , Figure 2 This is a flow chart of a second embodiment of the air conditioner control method of the present application.

[0075] In a feasible implementation, step S20 may include steps S21 to S22:

[0076] Step S21: obtaining the operating status of the air conditioner and the compressor;

[0077] Step S22: When the air conditioner is turned on for the first time or the compressor shutdown time is longer than a first preset time, assigning an outdoor ambient temperature value according to the compressor exhaust temperature value and the outdoor heat exchanger temperature value;

[0078] First of all, it should be noted that when the air conditioner is turned on for the first time, that is, when the air conditioner has just received the power-on command, or the compressor has shut down for protection and has been shut down for a period of time, or when the air conditioner is switched from fresh air mode to cooling or heating mode, at this time, the compressor is in a cold start state, or the compressor's operating frequency is low and the load is small. If at this time, the load state of the compressor is not considered and the compressor is directly allowed to work at a higher load, it is easy to cause the compressor to be damaged, causing greater losses.

[0079] Therefore, when the air conditioner is turned on for the first time or the compressor is shut down for longer than the first preset time, this is a very special working condition. If the outdoor ambient temperature value is assigned arbitrarily, it may easily cause damage to the compressor.

[0080] The specific value of the first preset time is not limited, and it can be any value set according to actual needs. For example, it can be 5 minutes, 10 minutes, etc., which is not limited here. In one embodiment, the first preset time is 10 minutes. After the shutdown protection is triggered, the compressor is shut down for more than 10 minutes, which means that the pressure in the compressor has been relieved. With more than 10 minutes, the load of the compressor can be reduced to avoid the compressor from dropping directly from a high-load state to a low-load state.

[0081] In the solution of this embodiment, when the air conditioner is turned on for the first time or the shutdown time of the compressor is greater than the first preset time, the outdoor ambient temperature value is assigned according to the compressor exhaust temperature value and the outdoor heat exchanger temperature value. The compressor exhaust temperature value and the outdoor heat exchanger temperature value can provide real-time feedback on the work done by the compressor. When the difference between the compressor exhaust temperature value and the outdoor heat exchanger temperature value is large, it means that the work done by the compressor is large at this time. Corresponding to the strategy for assigning the outdoor ambient temperature value at this time, it can be considered to allow the compressor to work with a larger power to better meet the user's cooling and heating needs.

[0082] When the difference between the two is small, it means that the work load of the compressor is small. Correspondingly, at this time, if the work load of the compressor increases sharply, it will easily cause damage to the compressor. Therefore, when the difference between the two is small, the increase in the frequency of the compressor should also be small.

[0083] Corresponding to the solution of this embodiment, when it is identified that the air conditioner is turned on for the first time or the compressor shutdown time is greater than the first preset time, the operating status of the compressor will be judged based on the compressor exhaust temperature value and the outdoor heat exchanger temperature value, and then different assignment methods will be selected according to the operating status of the compressor, thereby protecting the compressor and preventing damage to the compressor.

[0084] More specifically, in a feasible implementation, the detected compressor exhaust temperature value is T1, the detected outdoor heat exchanger temperature value is T2, and the outdoor ambient temperature value is T3;

[0085] Step S22 may include steps S221 to S223:

[0086] Step S221: Compare the compressor exhaust temperature value T1 and the outdoor heat exchanger temperature value T2;

[0087] By comparing the compressor exhaust temperature value and the outdoor heat exchanger temperature value, the working status of the compressor can be obtained in real time and the load size of the compressor can be judged.

[0088] Specifically, the specific method of obtaining the compressor exhaust temperature value and the outdoor heat exchanger temperature value is not limited. It can be to set temperature sensors at the exhaust port of the compressor and the outdoor heat exchanger respectively to obtain the compressor exhaust temperature value and the outdoor heat exchanger temperature value. It can also be other methods, such as using a model to monitor and calculate the compressor exhaust temperature value and the outdoor heat exchanger temperature value, so as to obtain the compressor exhaust temperature value and the outdoor heat exchanger temperature value. There is no limitation here.

[0089] Step S222: when T1-T2<C, assign T3 to T2;

[0090] It should be noted that C is a third preset value, and its size and value can be set according to actual conditions. For variable-frequency air conditioners, in cooling mode, the higher the outdoor ambient temperature, the smaller the load on the compressor. In heating mode, the lower the outdoor ambient temperature, the smaller the load on the compressor.

[0091] In the cooling mode, the high-temperature and high-pressure refrigerant discharged from the compressor exhaust port will flow directly to the outdoor heat exchanger for heat exchange, and become a high-pressure and low-temperature liquid in the outdoor heat exchanger. At this time, the temperature of the outdoor heat exchanger can be understood as the temperature of the refrigerant during the outdoor heat exchange process, or after the heat exchange, which is lower than the temperature of the refrigerant discharged from the compressor exhaust port. If the temperature of the refrigerant drops less, that is, T1-T2<C, it means that the workload of the compressor is small at this time, and the operating frequency of the compressor is also small. At this time, if the operating frequency of the compressor is greatly increased, it is easy to cause damage to the compressor. Therefore, T3 is assigned to T2, and the outdoor ambient temperature is directly assigned to the outdoor heat exchanger temperature value. It can be understood that the outdoor heat exchanger temperature value is generally higher than the outdoor ambient temperature value. Therefore, at this time, the outdoor ambient temperature is directly assigned to the outdoor heat exchanger temperature value, that is, the outdoor heat exchanger temperature value is regarded as the outdoor ambient temperature, which is higher than the actual outdoor ambient temperature. The operating frequency of the compressor will be lower than the operating frequency using the actual outdoor ambient temperature, so that the compressor can run at a lower frequency to achieve protection of the compressor.

[0092] In the heating mode, the high-temperature and high-pressure refrigerant discharged from the compressor exhaust port first flows to the indoor heat exchanger to release heat, and then absorbs heat at the outdoor heat exchanger. When T1-T2<C, it means that the workload of the compressor is small at this time, and the operating frequency of the compressor is also small. At this time, if the operating frequency of the compressor is greatly increased, it is easy to cause damage to the compressor. Correspondingly, at this time, the temperature at the outdoor heat exchanger will be lower than the outdoor ambient temperature. Therefore, at this time, the outdoor ambient temperature is directly assigned to the outdoor heat exchanger temperature value, that is, the outdoor heat exchanger temperature value is regarded as the outdoor ambient temperature, which is lower than the actual outdoor ambient temperature. The operating frequency of the compressor will be lower than the operating frequency using the actual outdoor ambient temperature, so that the compressor can run at a lower frequency to protect the compressor.

[0093] It should be emphasized that in cooling and heating modes, the value of C can be the same. Of course, it can also be different. As long as the actual load of the compressor can be determined by C, there is no limitation here.

[0094] Step S223: When T1-T2≥C, assign T3 to the first preset value.

[0095] It should be noted that when T1-T2≥C, the compressor load is already high, and therefore the compressor can be operated at a higher power to meet the user's basic cooling and heating needs. The specific value of the first preset value is not limited and can be determined based on actual needs. In actual use, the first preset value can be a value that corresponds to a compressor operating frequency that can basically meet the user's basic cooling and heating needs while not causing the compressor to shut down due to protection.

[0096] Moreover, in the cooling mode, the value of the first preset value should be less than the outdoor heat exchanger temperature value T2, so that the operating frequency of the compressor is higher than the operating frequency corresponding to the outdoor ambient temperature value after directly using T2 as the assigned value. In the heating mode, the value of the first preset value should be greater than the outdoor heat exchanger temperature value T2, so that the operating frequency of the compressor is higher than the operating frequency corresponding to the outdoor ambient temperature value after directly using T2 as the assigned value.

[0097] Corresponding to the solution of this embodiment, when the outdoor ambient temperature value is assigned according to the compressor exhaust temperature value and the outdoor heat exchanger temperature value, when T1-T2<C, T2 is directly used as the assigned outdoor ambient temperature value to control the operation of the compressor, so that the compressor can run at a lower frequency, thereby achieving protection of the compressor. When T1-T2≥C, T3 is assigned to the first preset value, so that the compressor can run at a higher frequency to meet the user's cooling and heating needs.

[0098] In a further embodiment, after the step of controlling the air conditioner to perform fault-tolerant operation according to the assigned outdoor ambient temperature value, the compressor exhaust temperature value, and the outdoor heat exchanger temperature value, the method further includes:

[0099] Step S40: Repeat the step of comparing the compressor exhaust temperature value T1 and the outdoor heat exchanger temperature value T2 at intervals of a second preset time.

[0100] It should be noted that after completing the first round of assignment, the air conditioner is controlled to perform fault-tolerant operation for a period of time according to the assigned outdoor ambient temperature value. When T1-T2<C, T3 is assigned to T2. At this time, the compressor runs at a lower frequency first. After a period of time, the difference between T1 and T2 may change from less than C to greater than or equal to C. At this time, T3 can be assigned to the first preset value, allowing the compressor to run at a higher frequency to meet the user's cooling and heating needs.

[0101] Specifically, the specific value of the second preset time length can be any value set according to actual needs, for example, it can be 5 minutes, 10 minutes, etc., which is not limited here. In one embodiment, the second preset time length is 10 minutes.

[0102] Taking the first startup of the air conditioner as an example, after receiving the startup command, the working status of the first temperature detection device is first detected, and it is found that the working status of the first temperature detection device is abnormal at this time. Then, the compressor exhaust temperature value T1 and the outdoor heat exchanger temperature value T2 are compared to determine T1-T2<C, and T2 is used as the outdoor ambient temperature value to control the air conditioner to perform fault-tolerant operation. Then, at an interval of a second preset time, the step of comparing the compressor exhaust temperature value and the outdoor heat exchanger temperature value is repeated. When T1-T2<C, the outdoor heat exchanger temperature value T2 at this time is continued to be used as the outdoor ambient temperature value to control the air conditioner to perform fault-tolerant operation, so that the compressor continues to operate at a lower frequency to protect the compressor. When T1-T2≥C, T3 is assigned to the first preset value, and the first preset value is used as the outdoor ambient temperature value to control the air conditioner to perform fault-tolerant operation, so that the compressor is switched to a higher frequency to meet the user's cooling and heating needs.

[0103] Therefore, in the technical solution of this embodiment, by repeating the step of comparing the compressor exhaust temperature value T1 and the outdoor heat exchanger temperature value T2 at intervals of a second preset time, the air conditioner can be operated in a fault-tolerant manner. At different stages, the compressor can be operated at different frequencies, thereby meeting the user's cooling and heating needs as much as possible while protecting the compressor.

[0104] Reference Figure 3 , Figure 3 This is a flow chart of a third embodiment of the air conditioner control method of the present application.

[0105] In some embodiments, step S20 may further include step S23:

[0106] Step S23: When the air conditioner is not started for the first time and the shutdown time of the compressor is less than or equal to the first preset time, the outdoor ambient temperature is assigned to the first preset value.

[0107] It can be understood that the air conditioner is not turned on for the first time, that is, it has not received a power-on command, and the shutdown time of the compressor is less than or equal to the first preset time, that is, no shutdown protection occurs, or the shutdown protection time is short. Correspondingly, at this time, the compressor can be directly operated at a higher frequency, and the outdoor ambient temperature value is assigned to the first preset value. Then, according to the first preset value, the air conditioner is controlled to perform fault-tolerant operation, so that the compressor directly runs at a higher frequency to meet the user's cooling and heating needs.

[0108] It should be noted that step S20 may include only step S21 and step S22, or only step S21 and step S23, or may include step S21, step S22 and step S23 at the same time, which is not limited here.

[0109] In one embodiment, step S20 also includes step S21, step S22, and step S23. Correspondingly, at this time, different assignment methods can be selected according to different states of the compressor, thereby taking into account both the protection of the compressor and the user's cooling and heating needs.

[0110] In order to detect whether the assigned outdoor ambient temperature value can meet the user's cooling and heating needs, after the step of controlling the air conditioner to perform fault-tolerant operation according to the assigned outdoor ambient temperature value, in some embodiments, the method further includes:

[0111] Step S50: After a third preset time period, obtain the indoor ambient temperature and the set temperature range;

[0112] It should be noted that the specific value of the third preset time is not restricted and can be any value according to actual needs, such as 5 minutes, 10 minutes, etc. In one embodiment, the third preset time is thirty minutes. After thirty minutes of fault-tolerant operation, the air conditioner can basically change the indoor ambient temperature to a relatively stable temperature range. Corresponding to obtaining the indoor ambient temperature and the set temperature range at this time, it can more accurately judge whether the load of the compressor matches the user's cooling and heating needs.

[0113] The specific form of the set temperature range is not restricted. For example, in cooling mode, the user sets the temperature as Q. The range can be less than or equal to Q, or less than or equal to Q+X. X can be a certain value set according to actual conditions, such as 1°C, 2°C, etc., and is not limited here. Taking X as 3°C as an example, when the indoor ambient temperature is less than or equal to Q+3, it is determined that the indoor ambient temperature falls within the set temperature range. When the indoor ambient temperature is greater than Q+3, it is determined that the indoor ambient temperature does not fall within the set temperature range.

[0114] In heating mode, the temperature set by the user is Q. The range can be greater than Q or greater than QX. X can be a certain value set according to actual conditions, such as 1°C, 2°C, etc., and is not limited here. Taking X as 3°C as an example, when the indoor ambient temperature is greater than or equal to Q-3, it is determined that the indoor ambient temperature falls within the set temperature range. When the indoor ambient temperature is less than Q-3, it is determined that the indoor ambient temperature does not fall within the set temperature range.

[0115] In the process of obtaining the indoor ambient temperature and the set temperature range, and judging whether the indoor ambient temperature falls within the set temperature range, the corresponding judgment result may be output only when the indoor ambient temperature falls within or does not fall within the set temperature range for a certain period of time, thereby avoiding misjudgment.

[0116] Step S60: When the indoor ambient temperature does not fall within the set temperature range, the assigned outdoor ambient temperature value is adjusted to increase the load of the compressor.

[0117] When the indoor ambient temperature does not fall within the set temperature range, it means that the operating frequency of the compressor or the cooling and heating capacity of the air conditioner does not match the user's needs. In cooling mode, the indoor ambient temperature has been too high, there is no rapid cooling, and the experience is poor. In heating mode, the indoor ambient temperature has been too low, there is no rapid heating, and the experience is poor. Correspondingly, at this time, the assigned outdoor ambient temperature value is adjusted to increase the load of the compressor to meet the user's cooling or heating needs.

[0118] It should be noted that step S60 can be performed after step S222, or step S60 can be performed only after step S23 or step S223. Correspondingly, at this time, the first preset value can be directly changed to increase the load of the compressor. When there is only step S222, step S60 can also be not executed, because when there is only step S222 without step S223 or step S23, the compressor will only operate at a lower frequency, which is difficult to meet the user's cooling and heating needs. Correspondingly, not executing step S50 and step S60 at this time can effectively reduce the pressure on the hardware that executes the method, etc., which is not limited here.

[0119] In addition, in a further embodiment, when adjusting the assigned outdoor ambient temperature value, in the cooling mode, the temperature of the outdoor heat exchanger can also be judged. Only when it is less than a certain value, the assigned outdoor ambient temperature value is adjusted. In the heating mode, the temperature of the indoor heat exchanger can also be judged. Only when it is less than a certain value, the assigned outdoor ambient temperature value is adjusted.

[0120] Since the outdoor heat exchanger of the air conditioner may be frosted in the heating mode, thereby affecting the heating effect of the air conditioner, in some embodiments, after the step of controlling the air conditioner to perform fault-tolerant operation according to the assigned outdoor ambient temperature value, the method further includes:

[0121] Step S70: When the operation mode of the air conditioner is the heating mode, after the detected outdoor heat exchanger temperature value is lower than the defrost temperature and lasts for a fourth preset time period, starting the defrost.

[0122] Corresponding to the solution of this embodiment, when the detected outdoor heat exchanger temperature value is lower than the defrost temperature and continues for the fourth preset time period, it means that thick frost has formed on the outdoor heat exchanger and the outdoor heat exchanger needs to be defrosted. Correspondingly, at this time, the defrost is started, thereby avoiding frosting on the outdoor heat exchanger and affecting the heating effect of the air conditioner.

[0123] Specifically, the defrost temperature and the fourth preset time can be set according to actual needs and are not limited here.

[0124] In a further embodiment, after step S30 and before step S70, the method further includes:

[0125] Step S67: when the operation mode of the air conditioner is the heating mode, obtaining the temperature value of the outdoor heat exchanger;

[0126] Step S68: When the outdoor heat exchanger temperature is greater than a first preset threshold, or the air conditioner operates in heating mode for less than a fifth preset time, detecting whether the compressor is shut down for protection, wherein the first preset threshold is greater than the defrost temperature;

[0127] Step S69: When it is detected that the compressor is in the shutdown protection state, the assigned outdoor ambient temperature value is modified to a second preset value, wherein the second preset value is the minimum value of the compressor load corresponding to the set outdoor ambient temperature range.

[0128] It should be noted that in the heating mode, the load of the outdoor unit or the compressor is generally not too large. Therefore, the shutdown protection phenomenon may only occur in the initial stage after the assignment. Correspondingly, when the outdoor heat exchanger temperature value is greater than the first preset threshold, the first preset threshold is greater than the defrost temperature, that is, the outdoor heat exchanger temperature value starts from the temperature change and reaches the first preset threshold, but does not reach the defrost temperature, or continues for the fifth preset time, the compressor is checked for shutdown protection. Once shutdown protection occurs, it means that the assigned value is not suitable, and the assigned outdoor ambient temperature value is modified to the second preset value, where the second preset value is the minimum value of the compressor load corresponding to the set outdoor ambient temperature range, so that the compressor runs at the minimum value within the range to protect the compressor.

[0129] Specifically, the second preset value, the first preset threshold and the fifth preset time can be limited and selected according to actual needs, and are not limited here. The compressor operating frequency corresponding to the second preset value should be less than the compressor operating frequency corresponding to the first preset value.

[0130] It should be emphasized that in heating mode, the compressor is checked for shutdown protection only when the outdoor heat exchanger temperature value is greater than the first preset threshold value, or the air conditioner operates in heating mode for less than the fifth preset time. In subsequent operations, the compressor is no longer checked for shutdown protection, which can effectively reduce the detection pressure of the air conditioner controller.

[0131] If in heating mode, the greater the assigned outdoor ambient temperature value, the greater the load on the compressor, and the smaller the assigned outdoor ambient temperature value, the smaller the load on the compressor, correspondingly at this time, the outdoor ambient temperature normally detected by the first temperature detection device is -20℃~50℃, and the outdoor ambient temperature value is directly assigned to -20℃, which allows the compressor to work at the minimum load and protect the compressor.

[0132] In some embodiments, after step S30, the method further includes:

[0133] Step S81: Obtain the total fault-tolerant operation time of the air conditioner;

[0134] Step S82: When the total fault-tolerant operation time of the air conditioner exceeds a second preset threshold, the air conditioner is controlled to shut down.

[0135] It can be understood that fault-tolerant operation is an emergency operation. Once it runs for a long time, it is bound to cause irreversible damage to the air conditioner. Therefore, in order to avoid losses to the air conditioner, when the total time of the air conditioner's fault-tolerant operation exceeds the second preset threshold, the air conditioner is controlled to shut down, thereby protecting the air conditioner.

[0136] In some embodiments, after step S30, the method further includes:

[0137] Step S91: When the air conditioner is in the fault-tolerant cooling mode, detecting whether the compressor is shut down for protection;

[0138] Step S92: When it is detected that the compressor is in the shutdown protection state, the assigned outdoor ambient temperature value is modified to a second preset value, wherein the second preset value is the minimum value of the compressor load corresponding to the set outdoor ambient temperature range.

[0139] In cooling mode, the operating pressure of the outdoor unit is relatively high. Therefore, the compressor can be tested for shutdown protection throughout the entire process. Once the compressor is detected to be in the shutdown protection state, the assigned outdoor ambient temperature value will be modified to the second preset value, thereby reducing the operating frequency of the compressor and protecting the compressor.

[0140] If in cooling mode, the smaller the assigned outdoor ambient temperature value, the greater the load on the compressor, and the larger the assigned outdoor ambient temperature value, the smaller the load on the compressor, correspondingly at this time, the outdoor ambient temperature normally detected by the first temperature detection device is -20℃~50℃, and the outdoor ambient temperature value is directly assigned to 50℃, which allows the compressor to work at the minimum load and protect the compressor.

[0141] Next, an embodiment after the combination is introduced. Specifically, in this embodiment, the method includes:

[0142] detecting a working state of the first temperature detection device;

[0143] When it is detected that the working state of the first temperature detection device is abnormal, step S21 is executed to obtain the operating state of the air conditioner and the compressor;

[0144] When the air conditioner is turned on for the first time or the compressor is turned off for longer than a first preset time, the compressor exhaust temperature T1 is compared with the outdoor heat exchanger temperature T2;

[0145] When T1-T2<C, T3 is assigned to T2, and the air conditioner is controlled to perform fault-tolerant operation according to the assigned outdoor ambient temperature value, and whether the compressor is shut down for protection is detected. When it is detected that the compressor is in the shutdown protection state, the assigned outdoor ambient temperature value is modified to a second preset value, wherein the second preset value is the minimum value of the compressor load corresponding to the set outdoor ambient temperature range. The step of comparing the compressor exhaust temperature value T1 and the outdoor heat exchanger temperature value T2 is repeated at intervals of a second preset time length. When T1-T2<C, T3 is assigned to T2, and when T1-T2≥C, T3 is assigned to the first preset value;

[0146] When T1-T2≥C, T3 is assigned to the first preset value, and the air conditioner is controlled to perform fault-tolerant operation according to the assigned outdoor ambient temperature value. After a third preset time interval, the indoor ambient temperature and the set temperature range are obtained; when the indoor ambient temperature does not fall within the set temperature range, the assigned outdoor ambient temperature value is adjusted to increase the load of the compressor.

[0147] When the air conditioner is not turned on for the first time and the shutdown time of the compressor is less than or equal to the first preset time, the outdoor ambient temperature value is assigned to the first preset value, and the air conditioner is controlled to perform fault-tolerant operation according to the assigned outdoor ambient temperature value. After an interval of a third preset time, the indoor ambient temperature and the set temperature range are obtained; when the indoor ambient temperature does not fall within the set temperature range, the assigned outdoor ambient temperature value is adjusted to increase the load of the compressor.

[0148] This application also provides an execution device, see Figure 4 , the execution device includes:

[0149] A detection module 10, the detection module 10 is used to detect the working state of the first temperature detection device;

[0150] an assignment module 20 for assigning a value to the outdoor ambient temperature value detected by the first temperature detection device according to a preset control strategy when detecting that the working state of the first temperature detection device is abnormal; and

[0151] The execution module 30 is used to control the air conditioner to perform fault-tolerant operation according to the assigned outdoor ambient temperature value.

[0152] The actuator provided in this application, utilizing the air conditioner control method of the aforementioned embodiment, can solve the technical problem of improving the stability of existing air conditioners. Compared to the prior art, the actuator provided in this application has the same beneficial effects as the air conditioner control method provided in the aforementioned embodiment. Other technical features of the actuator are the same as those disclosed in the aforementioned embodiment and are not further described here.

[0153] The present application provides an air conditioner, which includes a control device: the control device includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the control method of the air conditioner in the above-mentioned embodiment one.

[0154] Reference below Figure 5 , which shows a structural schematic diagram of a control device suitable for implementing an embodiment of the present application. Figure 5 The control device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0155] like Figure 5 As shown, the control device may include a processing device 1001 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes based on programs stored in a read-only memory (ROM) 1002 or programs loaded from a storage device 1003 into a random access memory (RAM) 1004. RAM 1004 also stores various programs and data required for air conditioner operation. Processing device 1001, ROM 1002, and RAM 1004 are interconnected via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems may be connected to I / O interface 1006: input devices 1007 including, for example, a touch screen, touchpad, keyboard, mouse, image sensor, microphone, accelerometer, gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), speaker, vibrator, etc.; storage device 1003 including, for example, a magnetic tape, hard disk, etc.; and communication device 1009. The communication device 1009 can allow the control device to communicate with other devices wirelessly or wired to exchange data. Although the figure shows a control device with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems can be implemented or have instead.

[0156] In particular, according to the embodiments disclosed in the present application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, the embodiments disclosed in the present application include a program product comprising a computer program carried on a computer-readable medium, the computer program comprising program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network via a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0157] The air conditioner provided in this application utilizes the air conditioner control method of the aforementioned embodiment, thereby resolving the technical problem of improving the stability of existing air conditioners. Compared to the prior art, the beneficial effects of the air conditioner provided in this application are the same as those of the air conditioner control method provided in the aforementioned embodiment. Other technical features of this air conditioner are the same as those disclosed in the aforementioned embodiment and are not further described here.

[0158] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0159] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

[0160] The present application provides a storage medium having computer-readable program instructions (ie, computer program) stored thereon, wherein the computer-readable program instructions are used to execute the air conditioner control method in the above-mentioned embodiment.

[0161] The storage medium provided in this application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination thereof. More specific examples of storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this embodiment, the storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, system or device. The program code contained on the storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0162] The above-mentioned storage medium may be included in the air conditioner; or it may exist independently without being assembled into the air conditioner.

[0163] The above-mentioned storage medium carries one or more programs. When the above-mentioned one or more programs are executed by the air conditioner, the air conditioner: detects the working status of the first temperature detection device; when it is detected that the working status of the first temperature detection device is abnormal, assigns the outdoor ambient temperature value detected by the first temperature detection device according to a preset control strategy; and controls the air conditioner to perform fault-tolerant operation according to the assigned outdoor ambient temperature value.

[0164] Computer program code for performing the operations of the present application may be written in one or more programming languages, or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on the remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0165] The flow charts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and program products according to various embodiments of the present application. In this regard, each box in the flow chart or block diagram can represent a module, program segment or a part of code, and the module, program segment or a part of code includes one or more executable instructions for realizing the prescribed logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a sequence different from that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented by a dedicated hardware-based system that performs the prescribed function or operation, or can be implemented by a combination of dedicated hardware and computer instructions.

[0166] The modules described in the embodiments of the present application may be implemented in software or hardware, wherein the name of a module does not necessarily limit the unit itself.

[0167] The readable storage medium provided in this application is a storage medium that stores computer-readable program instructions (i.e., a computer program) for executing the aforementioned air conditioner control method, thereby resolving the technical problem of improving the stability of existing air conditioners. Compared to the prior art, the beneficial effects of the storage medium provided in this application are the same as those of the air conditioner control method provided in the aforementioned embodiment, and are not further elaborated here.

[0168] The present application also provides a program product, comprising a computer program, which implements the steps of the above-mentioned air conditioner control method when executed by a processor.

[0169] The program product provided by this application can solve the technical problem of improving the stability of existing air conditioners. Compared with the prior art, the beneficial effects of the program product provided by this application are the same as the beneficial effects of the air conditioner control method provided by the above embodiment, which will not be repeated here.

[0170] The above is a detailed introduction to the air conditioner and its control method, storage medium, program product and execution device provided in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, based on the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A method for controlling an air conditioner, characterized in that: The control method is applied to an air conditioner, wherein the air conditioner includes a first temperature detection device for detecting the outdoor ambient temperature. The control method includes: detecting a working state of the first temperature detection device; When it is detected that the working state of the first temperature detection device is an abnormal state, assigning a value to the outdoor ambient temperature value detected by the first temperature detection device according to a preset control strategy; The air conditioner is controlled to perform fault-tolerant operation according to the assigned outdoor ambient temperature value.

2. The air conditioner control method according to claim 1, characterized in that: The assigning of a value to the outdoor ambient temperature value detected by the first temperature detection device according to a preset control strategy includes: Get the operating status of the air conditioner and compressor; When the air conditioner is turned on for the first time or the compressor has been turned off for longer than a first preset time, assigning an outdoor ambient temperature value according to the compressor exhaust temperature value and the outdoor heat exchanger temperature value; and / or, When the air conditioner is not started for the first time and the shutdown time of the compressor is less than or equal to the first preset time, the outdoor ambient temperature value is assigned to the first preset value.

3. The air conditioner control method according to claim 2, characterized in that: When it is detected that the working state of the first temperature detection device is abnormal, the compressor exhaust temperature value is T1, the outdoor heat exchanger temperature value is T2, and the outdoor ambient temperature value is T3; Assign the outdoor ambient temperature value according to the compressor exhaust temperature value and the outdoor heat exchanger temperature value, including: Compare the compressor exhaust temperature value T1 and the outdoor heat exchanger temperature value T2; When T1-T2<C, assign T3 to T2; When T1-T2≥C, T3 is assigned to the first preset value.

4. The air conditioner control method according to claim 3, characterized in that: After the step of controlling the air conditioner to perform fault-tolerant operation according to the assigned outdoor ambient temperature value, the compressor exhaust temperature value, and the outdoor heat exchanger temperature value, the method further includes: The step of comparing the compressor exhaust temperature value T1 and the outdoor heat exchanger temperature value T2 is repeated after a second preset time period.

5. The air conditioner control method according to claim 2, characterized in that: After the step of controlling the air conditioner to perform fault-tolerant operation according to the assigned outdoor ambient temperature value, the method further includes: After a third preset time period, obtaining the indoor ambient temperature and the set temperature range; When the indoor ambient temperature does not fall within the set temperature range, the assigned outdoor ambient temperature value is adjusted to increase the load of the compressor.

6. The air conditioner control method according to claim 1, characterized in that: After the step of controlling the air conditioner to perform fault-tolerant operation according to the assigned outdoor ambient temperature value, the method further includes: When the operation mode of the air conditioner is the heating mode, the defrosting is started after the detected temperature value of the outdoor heat exchanger is lower than the defrosting temperature and lasts for a fourth preset time period.

7. The air conditioner control method according to claim 6, characterized in that: After the step of controlling the air conditioner to perform fault-tolerant operation according to the assigned outdoor ambient temperature value, and before the step of detecting that the outdoor heat exchanger temperature value is less than the defrost temperature, the method further includes: When the operating mode of the air conditioner is a heating mode, obtaining a temperature value of an outdoor heat exchanger; When the outdoor heat exchanger temperature is greater than a first preset threshold, or the air conditioner operates in heating mode for less than a fifth preset time, detecting whether the compressor has been shut down for protection, wherein the first preset threshold is greater than the defrost temperature; When it is detected that the compressor is in a shutdown protection state, the assigned outdoor ambient temperature value is modified to a second preset value, wherein the second preset value is the minimum value of the compressor load corresponding to the set outdoor ambient temperature range.

8. The air conditioner control method according to any one of claims 1 to 7, characterized in that: After the step of controlling the air conditioner to perform fault-tolerant operation according to the assigned outdoor ambient temperature value, the method further includes: Get the total fault-tolerant operation time of the air conditioner; When the total fault-tolerant operation time of the air conditioner exceeds a second preset threshold, controlling the air conditioner to shut down; and / or, When the air conditioner is in fault-tolerant operation in cooling mode, detect whether the compressor has stopped for protection; When it is detected that the compressor is in a shutdown protection state, the assigned outdoor ambient temperature value is modified to a second preset value, wherein the second preset value is the minimum value of the compressor load corresponding to the set outdoor ambient temperature range.

9. An air conditioner, characterized in that: including control devices; The control device includes: a memory, a processor, and a control program of the liquid storage component stored in the memory and runnable on the processor. When the control device is executed by the processor, the steps of the air conditioner control method as described in any one of claims 1 to 8 are implemented.

10. A storage medium, characterized in that: The storage medium is a storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the air conditioner control method according to any one of claims 1 to 8 are implemented.

11. A program product, characterized in that The program product includes a computer program, and when the computer program is executed by a processor, the steps of the air conditioner control method according to any one of claims 1 to 8 are implemented.

12. An execution device, characterized in that: include: A detection module, configured to detect a working state of the first temperature detection device; an assignment module, configured to assign a value to the outdoor ambient temperature value detected by the first temperature detection device according to a preset control strategy when detecting that the working state of the first temperature detection device is an abnormal state; as well as, An execution module is used to control the air conditioner to perform fault-tolerant operation according to the assigned outdoor ambient temperature value.

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