Air conditioner, control method thereof, and computer readable storage medium

Abstract

This invention discloses a control method for an air conditioner, comprising: acquiring the exhaust temperature of the compressor during the compressor's start-up process; detecting the exhaust temperature using a temperature sensor mounted on the compressor; determining whether an abnormality exists in the air conditioner's refrigerant circulation system based on the exhaust temperature; and controlling the air conditioner to perform a protection operation if an abnormality is determined in the refrigerant circulation system. This invention also discloses an air conditioner and a computer-readable storage medium. The invention aims to improve the accuracy of identifying abnormalities in the air conditioner's refrigerant circulation system and achieve timely protection of the air conditioning system.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more particularly to a control method for an air conditioner, an air conditioner, and a computer-readable storage medium. Background Technology

[0002] With the development of economy and technology, air conditioners are being used more and more widely. During the use of air conditioners, due to the diversity of their application scenarios and improper installation, abnormalities such as leaks, impurities, and ice blockages can easily occur in the air conditioner's refrigerant circulation system.

[0003] Currently, air conditioners typically use a temperature sensor installed on the compressor's exhaust pipe to detect the exhaust temperature and indicate system abnormalities. When the exhaust temperature is too high, corresponding protective actions are executed. However, since the refrigerant flowing from the compressor to the exhaust pipe will continuously decrease in temperature as the heat exchanger temperature decreases, it is easy to miss the alarm when performing abnormal protection based on the detected exhaust temperature, resulting in failure to perform abnormal protection on the air conditioning system in a timely manner. Summary of the Invention

[0004] The main objective of this invention is to provide a control method for an air conditioner, an air conditioner, and a computer-readable storage medium, aiming to improve the accuracy of abnormal identification of the refrigerant circulation system of the air conditioner and achieve timely protection of the air conditioning system.

[0005] To achieve the above objectives, the present invention provides a control method for an air conditioner, the control method comprising the following steps:

[0006] During the operation of the air conditioner's compressor, the exhaust temperature of the compressor is acquired; the exhaust temperature is detected by a temperature sensor located on the air conditioner's compressor.

[0007] Determine whether there is an abnormality in the refrigerant circulation system of the air conditioner based on the exhaust temperature;

[0008] If an abnormality is detected in the refrigerant circulation system, the air conditioner is controlled to perform a protection operation.

[0009] Optionally, before the step of determining whether there is an abnormality in the refrigerant circulation system of the air conditioner based on the exhaust temperature, the method further includes:

[0010] During the compressor start-up process of the air conditioner, the step of obtaining the exhaust temperature of the compressor is performed and the target parameters are obtained; the target parameters include the indoor temperature parameters of the air conditioner and / or the operating current of the compressor;

[0011] The step of determining whether there is an abnormality in the refrigerant circulation system of the air conditioner based on the exhaust temperature includes:

[0012] The presence of any abnormalities in the refrigerant circulation system of the air conditioner is determined based on the exhaust temperature and the target parameters.

[0013] Optionally, the step of determining whether there is an abnormality in the refrigerant circulation system of the air conditioner based on the exhaust temperature and the target parameter includes:

[0014] The frequency parameters for determining the exhaust temperature and target parameters to reach preset conditions after the compressor starts are determined; the preset conditions are the conditions that the exhaust temperature and target parameters need to reach when there is an abnormal risk in the refrigerant circulation system;

[0015] Determine whether there is an abnormality in the refrigerant circulation system based on the frequency parameters.

[0016] Optionally, the frequency parameter includes the total number of times the exhaust temperature and the target parameter reach the preset condition after the compressor starts, and the step of determining whether there is an abnormality in the refrigerant circulation system based on the frequency parameter includes:

[0017] When the total number of times is greater than or equal to the preset number of times, it is determined that there is an abnormality in the refrigerant circulation system;

[0018] When the total number of times is less than the preset number of times, it is determined that there is no abnormality in the refrigerant circulation system.

[0019] Optionally, the preset conditions include the exhaust temperature being greater than a preset temperature and the target parameter being within a target parameter range;

[0020] The target parameter being within the target parameter range includes the temperature parameter being less than or equal to a preset temperature parameter, and / or the operating current being less than or equal to a preset current.

[0021] Optionally, the target parameter includes the temperature parameter, and the step of obtaining the target parameter includes:

[0022] Acquire ambient temperature data of the space in which the air conditioner operates and / or indoor heat exchanger temperature data of the air conditioner;

[0023] The temperature parameters are determined based on the ambient temperature data and / or the indoor heat exchanger temperature data.

[0024] Optionally, the ambient temperature data includes a first ambient temperature and a second ambient temperature, and the indoor heat exchanger temperature data includes a first indoor heat exchanger temperature and a second indoor heat exchanger temperature. The first ambient temperature and the first indoor heat exchanger temperature are data detected within a preset time period after the compressor starts, and the second ambient temperature and the second indoor heat exchanger temperature are data detected after the compressor starts beyond the preset time period. The step of determining the temperature parameter based on the ambient temperature data and the indoor heat exchanger temperature data includes:

[0025] Determine a first temperature difference between the first ambient temperature and the second ambient temperature, and determine a second temperature difference between the indoor heat exchanger temperature and the second indoor heat exchanger temperature;

[0026] And / or, determine a third temperature difference between the second ambient temperature and the second heat exchanger temperature;

[0027] The temperature parameter includes the first temperature difference value and the second temperature difference value; or, the temperature parameter includes the first temperature difference value, the second temperature difference value and the third temperature difference value; or, the temperature parameter includes the third temperature difference value.

[0028] Optionally, the step of controlling the air conditioner to perform a protection operation includes:

[0029] Control the compressor to stop or reduce its frequency.

[0030] Optionally, the temperature sensor is located inside the compressor, on top of the compressor, or at a preset position on the compressor, wherein the preset position is on the outer wall of the compressor and aligned with the internal motor of the compressor.

[0031] Furthermore, in order to achieve the above objectives, this application also proposes an air conditioner, which includes:

[0032] compressor;

[0033] A control device, wherein the compressor is connected to the control device, the control device comprising: a memory, a processor, and an air conditioner control program stored in the memory and executable on the processor, wherein the air conditioner control program, when executed by the processor, implements the steps of the air conditioner control method as described in any of the preceding claims.

[0034] In addition, to achieve the above objectives, this application also proposes a computer-readable storage medium storing a control program for an air conditioner, which, when executed by a processor, implements the steps of the control method for the air conditioner as described in any of the preceding claims.

[0035] This invention proposes a control method for an air conditioner. This method determines whether an abnormality has occurred in the air conditioner's refrigerant circulation system based on the compressor exhaust temperature detected by a temperature sensor on the compressor. When an abnormality occurs in the refrigerant circulation system, the air conditioner is controlled to perform a protective operation. In this process, the abnormality identification of the refrigerant circulation system is achieved through the exhaust temperature detected by a temperature sensor installed on the compressor. Compared to a temperature sensor installed through the exhaust pipe, the temperature sensor installed on the compressor is closer to the heat-generating motor in the compressor, thus more accurately reflecting the abnormality of the refrigerant circulation system and executing the protective operation. This effectively improves the accuracy of the air conditioner's refrigerant circulation system abnormality identification and achieves timely protection of the air conditioning system. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the hardware structure involved in the operation of an embodiment of the air conditioner of the present invention;

[0037] Figure 2 This is a flowchart illustrating an embodiment of the control method for an air conditioner according to the present invention;

[0038] Figure 3 This is a flowchart illustrating another embodiment of the control method for the air conditioner of the present invention.

[0039] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0041] The main solution of this invention is as follows: during the start-up process of the air conditioner's compressor, the exhaust temperature of the compressor is obtained; the exhaust temperature is detected by a temperature sensor installed on the air conditioner's compressor; based on the exhaust temperature, it is determined whether there is an abnormality in the air conditioner's refrigerant circulation system; if it is determined that there is an abnormality in the refrigerant circulation system, the air conditioner is controlled to perform a protection operation.

[0042] In existing technology, air conditioners typically use a temperature sensor installed on the compressor's exhaust pipe to detect the exhaust temperature and indicate system abnormalities. When the exhaust temperature is too high, corresponding protective actions are performed. However, since the refrigerant flowing from the compressor to the exhaust pipe decreases continuously with the heat exchange temperature, it is easy to miss the detection when performing abnormal protection based on the detected exhaust temperature, resulting in failure to perform abnormal protection on the air conditioning system in a timely manner.

[0043] The present invention provides the above-mentioned solution, which improves the accuracy of abnormal identification of the refrigerant circulation system of the air conditioner and realizes timely protection of the air conditioning system.

[0044] This invention provides an air conditioner. The air conditioner can be a wall-mounted air conditioner, a floor-standing air conditioner, a portable air conditioner, a window air conditioner, a ceiling-mounted air conditioner, etc.

[0045] In this embodiment of the invention, reference is made to Figure 1 The air conditioner specifically includes a refrigerant circulation system and a control device. The refrigerant circulation system includes a compressor 1, an indoor heat exchanger, a throttling device, and an outdoor heat exchanger connected in sequence. The compressor 1 is connected to the control device. The control device can control the compressor 1 to stop or reduce its frequency.

[0046] Specifically, refer to Figure 1 The compressor 1 may be equipped with a first temperature sensor 2, which is used to detect the exhaust temperature of the compressor 1. The first temperature sensor 2 is connected to a control device. The control device can acquire the data detected by the first temperature sensor 2. Specifically, the first temperature sensor 2 may be located inside the compressor 1, on the top of the compressor 1, or at a preset position on the compressor 1. The preset position is the outer wall of the compressor 1 and is aligned with the internal motor of the compressor 1.

[0047] Furthermore, refer to Figure 1 The air conditioner may also include a second temperature sensor 3, which is used to detect the indoor ambient temperature. The second temperature sensor 3 may be located at the air return vent of the air conditioner. The second temperature sensor 3 is connected to a control device. The control device can acquire the data detected by the second temperature sensor 3.

[0048] Furthermore, refer to Figure 1 The air conditioner may also include a third temperature sensor 4, which is used to detect the temperature of the indoor heat exchanger. The third temperature sensor 4 may be installed on the coil of the indoor heat exchanger. The third temperature sensor 4 is connected to a control device. The control device can acquire the data detected by the third temperature sensor 4.

[0049] Furthermore, refer to Figure 1 The air conditioner may also include a current detection module 5, which is connected to the compressor 1 to detect the operating current of the compressor 1. The current detection module 5 is connected to a control device. The control device can obtain the operating current of the compressor 1 detected by the current detection module 5.

[0050] Furthermore, in embodiments of the present invention, referring to Figure 1The control device of the air conditioner includes: a processor 1001 (e.g., CPU), a memory 1002, and a timer 1003, etc. The memory 1002 can be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk storage device. Optionally, the memory 1002 can also be a storage device independent of the aforementioned processor 1001.

[0051] Those skilled in the art will understand that Figure 1 The device structure shown does not constitute a limitation on the device and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0052] like Figure 1 As shown, the memory 1002, which is a computer-readable storage medium, may include a control program for an air conditioner. Figure 1 In the device shown, the processor 1001 can be used to call the control program of the air conditioner stored in the memory 1002 and execute the relevant steps of the control method of the air conditioner in the following embodiments.

[0053] This invention also provides a control method for an air conditioner, which is used to control the operation of the air conditioner.

[0054] Reference Figure 2 This application proposes an embodiment of a control method for an air conditioner. In this embodiment, the control method for the air conditioner includes:

[0055] Step S10: During the start-up process of the air conditioner's compressor, the exhaust temperature of the compressor is acquired; the exhaust temperature is detected by a temperature sensor installed on the air conditioner's compressor.

[0056] Specifically, the exhaust temperature can be obtained by acquiring data from the temperature sensor installed on the compressor in real time or at set intervals after the compressor discharges.

[0057] Specifically, the temperature sensor is located inside the compressor, on top of the compressor, or at a preset position on the compressor. The preset position is on the outer wall of the compressor and aligned with the internal motor of the compressor.

[0058] Step S20: Determine whether there is an abnormality in the refrigerant circulation system of the air conditioner based on the exhaust temperature;

[0059] The abnormality in the refrigerant circulation system here includes refrigerant leakage and / or refrigerant blockage (specifically due to ice blockage, blockage caused by water or impurities in the refrigerant).

[0060] Different exhaust temperatures correspond to different identification results. Specifically, the presence of any abnormalities in the refrigerant circulation system is determined based on the exhaust temperature and the preset temperature. Specifically, an abnormality in the refrigerant circulation system can be determined when the exhaust temperature is higher than the preset temperature; conversely, an abnormality in the refrigerant circulation system can be determined when the exhaust temperature is lower than or equal to the preset temperature.

[0061] Step S30: If it is determined that there is an abnormality in the refrigerant circulation system, control the air conditioner to perform a protection operation.

[0062] In this embodiment, the protective operation performed by the air conditioner specifically includes controlling the compressor to stop or reduce its frequency. Specifically, if an abnormality is determined to exist in the refrigerant circulation system, the interval between the compressor's start-up time and the current time when the abnormality is determined can be obtained. If the interval is less than or equal to a preset time, the compressor is controlled to stop; if the interval is longer than the preset time, the compressor is controlled to reduce its frequency.

[0063] This invention proposes a control method for an air conditioner. This method determines whether an abnormality has occurred in the air conditioner's refrigerant circulation system based on the compressor exhaust temperature detected by a temperature sensor on the compressor. When an abnormality occurs in the refrigerant circulation system, the method controls the air conditioner to perform protective operations. In this process, the abnormality identification of the refrigerant circulation system is achieved through the exhaust temperature detected by a temperature sensor installed on the compressor. Compared to a temperature sensor installed through the exhaust pipe, the temperature sensor installed on the compressor is closer to the heat-generating motor in the compressor, thus more accurately reflecting the abnormality of the refrigerant circulation system and executing protective operations. This effectively improves the accuracy of the air conditioner's refrigerant circulation system abnormality identification and achieves timely protection of the air conditioning system.

[0064] Furthermore, based on the above embodiments, another embodiment of the control method for the air conditioner of this application is proposed. In this embodiment, reference is made to... Figure 3 Before step S20, the procedure further includes:

[0065] Step S101: During the compressor start-up process of the air conditioner, the step of obtaining the exhaust temperature of the compressor is performed and the target parameters are obtained; the target parameters include the indoor temperature parameters of the air conditioner and / or the operating current of the compressor;

[0066] The indoor side of the air conditioner here refers to the interior of the indoor unit and / or the indoor environment in which the air conditioner operates. Temperature parameters specifically refer to temperature characteristic parameters that characterize the operating conditions of the indoor environment of the air conditioner. In this embodiment, temperature parameters include indoor ambient temperature, indoor heat exchanger temperature, and / or the outlet air temperature of the indoor unit, etc.

[0067] Specifically, the indoor temperature parameters and / or compressor operating current can be detected simultaneously with, before, or after the exhaust temperature is detected.

[0068] Specifically, in this embodiment, the target parameter includes the temperature parameter, and the step of obtaining the target parameter includes: obtaining the ambient temperature data of the space where the air conditioner operates and / or the indoor heat exchanger temperature data of the air conditioner; and determining the temperature parameter based on the ambient temperature data and / or the indoor heat exchanger temperature data.

[0069] The ambient temperature data is specifically detected by the second temperature sensor mentioned above. The indoor heat exchanger temperature data is specifically detected by the third temperature sensor mentioned above. The ambient temperature data may include one or more indoor ambient temperatures. The indoor heat exchanger temperature data may include one or more indoor heat exchanger temperatures.

[0070] In one implementation, ambient temperature data can be used as the temperature parameter. In another implementation, indoor heat exchanger temperature data can be used as the temperature parameter. In yet another implementation, both ambient temperature data and indoor heat exchanger temperature data can be used as the temperature parameter. In yet another implementation, the temperature parameter can be calculated based on the ambient temperature data and the indoor heat exchanger temperature; one or more temperature parameters may be calculated.

[0071] Step S20 includes: Step S201, determining whether there is an abnormality in the refrigerant circulation system of the air conditioner based on the exhaust temperature and the target parameter.

[0072] Different values ​​of the exhaust temperature and the target parameter result in different abnormality determination states for the refrigerant circulation system. Specifically, in this embodiment, a frequency parameter is determined for the exhaust temperature and the target parameter to reach preset conditions after the compressor starts; the preset conditions are the conditions that the exhaust temperature and the target parameter need to reach when there is an abnormality risk in the refrigerant circulation system; the presence of an abnormality in the refrigerant circulation system is determined based on the frequency parameter.

[0073] The frequency parameter here characterizes how frequently the exhaust temperature and target parameters monitored after the compressor starts reach the preset conditions. The frequency parameter may include the total number of times, the interval between two sets of exhaust temperatures and target parameters detected at adjacent times reaching the preset conditions, and the frequency.

[0074] In this embodiment, the preset conditions include the exhaust temperature being greater than a preset temperature and the target parameter being within a target parameter range; wherein, the target parameter being within the target parameter range includes the temperature parameter being less than or equal to a preset temperature parameter, and / or the operating current being less than or equal to a preset current. Here, when the three conditions of excessively high exhaust temperature, excessively low temperature parameter, and excessively low operating current are simultaneously met, it can accurately indicate that the current system has an abnormal risk; otherwise, the system can be considered to be operating normally.

[0075] Specifically, in this embodiment, the frequency parameter includes the total number of times. When the total number of times is greater than or equal to a preset number, it is determined that the refrigerant circulation system has an abnormality; when the total number of times is less than the preset number, it is determined that the refrigerant circulation system does not have an abnormality. In this embodiment, the preset number of times ranges from 2 to 10 times, for example, 3 times, 5 times, 8 times, etc. In other embodiments,

[0076] Specifically, when the compressor starts, the total count is initialized to 0. If the detected exhaust temperature and target parameters meet the preset conditions, the total count is updated by incrementing it by one. If the updated total count is greater than or equal to the preset count, a system anomaly is confirmed; otherwise, the process returns to the step of acquiring the exhaust temperature and target parameters, again checking if they meet the preset conditions, and updating the total count if they do. This cycle repeats until the total count is greater than or equal to the preset count, at which point the air conditioner performs a protection operation.

[0077] In this embodiment, by combining exhaust temperature, indoor temperature, and / or compressor operating current, abnormal conditions in the refrigerant circulation system can be reflected more accurately. Based on this, the accuracy of air conditioning system anomaly identification and the timeliness of air conditioning protection operations can be further improved. Specifically, analyzing frequency parameters such as the total number of times the detected exhaust temperature and target parameters reach preset conditions corresponding to anomaly risks after compressor startup to characterize whether anomalies exist in the refrigerant circulation system is beneficial for further improving the accuracy and timeliness of system anomaly identification.

[0078] Furthermore, based on the above embodiments, another embodiment of the control method for the air conditioner of this application is proposed. In this embodiment, the ambient temperature data includes a first ambient temperature and a second ambient temperature, and the indoor heat exchanger temperature data includes a first indoor heat exchanger temperature and a second indoor heat exchanger temperature. The first ambient temperature and the first indoor heat exchanger temperature are data detected within a preset time after the compressor starts, and the second ambient temperature and the second indoor heat exchanger temperature are data detected after the compressor starts beyond the preset time. The step of determining the temperature parameter based on the ambient temperature data and the indoor heat exchanger temperature data includes: determining a first temperature difference between the first ambient temperature and the second ambient temperature; determining a second temperature difference between the indoor heat exchanger temperature and the second indoor heat exchanger temperature; and / or, determining a third temperature difference between the second ambient temperature and the second heat exchanger temperature.

[0079] The temperature parameter includes the first temperature difference value and the second temperature difference value; or, the temperature parameter includes the first temperature difference value, the second temperature difference value and the third temperature difference value; or, the temperature parameter includes the third temperature difference value.

[0080] Within a preset time after the compressor starts, multiple first temperature values ​​of the indoor environment and multiple second temperature values ​​of the indoor heat exchangers can be detected. The average of the multiple first temperature values ​​is taken as the first ambient temperature, and the average of the multiple second temperature values ​​is taken as the first indoor heat exchanger temperature.

[0081] In one implementation, the first temperature difference value and the second temperature difference value can be determined. When the first temperature difference value is less than or equal to the first set temperature difference, the second temperature difference value is less than or equal to the second set temperature difference, the operating current is less than or equal to the preset current, and the exhaust temperature is greater than the preset temperature, it can be determined that the above preset conditions are met. The preset temperature parameters mentioned above include the first set temperature difference and the second set temperature difference.

[0082] In another implementation, the first temperature difference value, the second temperature difference value, and the third temperature difference value can be determined. When the first temperature difference value is less than or equal to the first set temperature difference, the second temperature difference value is less than or equal to the second set temperature difference, the third temperature difference value is less than or equal to the third set temperature difference, the operating current is less than or equal to the preset current, and the exhaust temperature is greater than the preset temperature, it can be determined that the above preset conditions are met. The preset temperature parameters mentioned above include the first set temperature difference, the second set temperature difference, and the third set temperature difference.

[0083] In another implementation, the aforementioned third temperature difference value can be determined. When the third temperature difference value is less than or equal to the third set temperature difference, the operating current is less than or equal to the preset current, and the exhaust temperature is greater than the preset temperature, it can be determined that the aforementioned preset conditions are met. The aforementioned preset temperature parameters include the third set temperature difference mentioned above.

[0084] In this embodiment, the preset duration ranges from 1 minute to 5 minutes, such as 2 minutes, 3 minutes, or 4 minutes. The first preset temperature difference ranges from 1°C to 3°C, such as 2°C or 2.5°C. The second preset temperature difference ranges from 1°C to 5°C, such as 2°C, 3°C, or 4°C. The third preset temperature difference ranges from 1°C to 5°C, such as 2°C, 3°C, or 4°C. The preset temperature ranges from 90°C to 105°C, such as 95°C, 100°C, or 102°C. The preset current ranges from 2A to 4A, such as 2.1A, 3A, or 3.3A.

[0085] Furthermore, based on any of the above embodiments, the air conditioner may also be equipped with a temperature sensor in the exhaust pipe for detecting the second exhaust temperature. Here, the exhaust pipe is used to connect the compressor's exhaust port with a four-way valve or heat exchanger. Based on this, in addition to those listed above, the preset conditions may also include the temperature difference between the first exhaust temperature and the second exhaust temperature being greater than a set temperature difference and / or the second exhaust temperature being greater than a set temperature.

[0086] Furthermore, this invention also proposes a computer-readable storage medium storing a control program for an air conditioner. When the control program is executed by a processor, it implements the relevant steps of any of the above-described air conditioner control methods.

[0087] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0088] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0089] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0090] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A control method for an air conditioner, characterized in that, The control method for the air conditioner includes the following steps: During the operation of the air conditioner's compressor, the exhaust temperature of the compressor is acquired; the exhaust temperature is detected by a temperature sensor installed on the air conditioner's compressor; and target parameters are acquired, including the indoor temperature parameters of the air conditioner and / or the operating current of the compressor. The frequency parameters for determining the exhaust temperature and target parameters to reach preset conditions after the compressor starts are determined; the preset conditions are the conditions that the exhaust temperature and target parameters need to reach when there is an abnormal risk in the refrigerant circulation system; the preset conditions include the exhaust temperature being greater than a preset temperature and the target parameters being within the target parameter range; wherein, the target parameters being within the target parameter range includes the temperature parameter being less than or equal to a preset temperature parameter and the operating current being less than or equal to a preset current; Determine whether there is an abnormality in the refrigerant circulation system based on the frequency parameters; If an abnormality is detected in the refrigerant circulation system, the air conditioner is controlled to perform a protection operation.

2. The control method for an air conditioner as described in claim 1, characterized in that, The frequency parameter includes the total number of times the exhaust temperature and the target parameter reach the preset condition after the compressor starts. The step of determining whether there is an abnormality in the refrigerant circulation system based on the frequency parameter includes: When the total number of times is greater than or equal to the preset number of times, it is determined that there is an abnormality in the refrigerant circulation system; When the total number of times is less than the preset number of times, it is determined that there is no abnormality in the refrigerant circulation system.

3. The control method for an air conditioner as described in claim 1, characterized in that, The target parameter includes the temperature parameter, and the step of obtaining the target parameter includes: Acquire ambient temperature data of the space in which the air conditioner operates and / or indoor heat exchanger temperature data of the air conditioner; The temperature parameters are determined based on the ambient temperature data and / or the indoor heat exchanger temperature data.

4. The control method for an air conditioner as described in claim 3, characterized in that, The ambient temperature data includes a first ambient temperature and a second ambient temperature, and the indoor heat exchanger temperature data includes a first indoor heat exchanger temperature and a second indoor heat exchanger temperature. The first ambient temperature and the first indoor heat exchanger temperature are data detected within a preset time period after the compressor starts, and the second ambient temperature and the second indoor heat exchanger temperature are data detected after the compressor starts, exceeding the preset time period. The step of determining the temperature parameter based on the ambient temperature data and the indoor heat exchanger temperature data includes: Determine a first temperature difference between the first ambient temperature and the second ambient temperature, and determine a second temperature difference between the indoor heat exchanger temperature and the second indoor heat exchanger temperature; And / or, determine a third temperature difference between the second ambient temperature and the second indoor heat exchanger temperature; The temperature parameter includes the first temperature difference value and the second temperature difference value; or, the temperature parameter includes the first temperature difference value, the second temperature difference value and the third temperature difference value; or, the temperature parameter includes the third temperature difference value.

5. The control method for an air conditioner as described in any one of claims 1 to 4, characterized in that, The steps for controlling the air conditioner to perform protection operations include: Control the compressor to stop or operate at a reduced frequency; And / or, the temperature sensor is located inside the compressor, on top of the compressor, or at a preset position on the compressor, wherein the preset position is on the outer wall of the compressor and aligned with the internal motor of the compressor.

6. An air conditioner, characterized in that, The air conditioner includes: a compressor; a control device, the compressor being connected to the control device, the control device including: a memory, a processor, and a control program for the air conditioner stored in the memory and executable on the processor, wherein when the control program for the air conditioner is executed by the processor, it implements the steps of the control method for the air conditioner as described in any one of claims 1 to 4.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a control program for an air conditioner, which, when executed by a processor, implements the steps of the control method for an air conditioner as described in any one of claims 1 to 4.

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