Exhaust temperature control method and device, air conditioner and computer readable storage medium

Abstract

Embodiments of the present application provide an exhaust temperature control method and device, an air conditioner and a computer readable storage medium. The exhaust temperature control method is applicable to an air conditioner and includes: obtaining a measurement value of an exhaust temperature bulb, a condenser temperature and an evaporator temperature, the exhaust temperature bulb being used to measure an exhaust temperature of a compressor; determining an exhaust superheat deviation based on the measurement value of the exhaust temperature bulb, the condenser temperature and the evaporator temperature, the exhaust superheat deviation being a deviation between a calculated value of the exhaust superheat and a preset value; and determining that the exhaust temperature bulb is faulty when a duration for which the exhaust superheat deviation is less than a deviation threshold value is greater than a time threshold value.

Description

Technical Field

[0001] This application relates to the field of air conditioner technology, specifically to an exhaust temperature control method, device, air conditioner, and computer-readable storage medium. Background Technology

[0002] For example, air conditioners and other refrigeration equipment are equipped with exhaust temperature sensors to measure the exhaust temperature of the compressor. If the exhaust temperature sensor malfunctions, such as becoming loose, the measured exhaust temperature will become abnormal, leading to malfunctions in the air conditioner or even system damage. Currently, there is a lack of effective methods to accurately detect whether the exhaust temperature sensor has malfunctioned, making it difficult to take timely corrective measures. Summary of the Invention

[0003] This application provides an exhaust temperature control method, device, air conditioner, and computer-readable storage medium, which can accurately detect whether the exhaust temperature sensor has malfunctioned, such as becoming loose, and take timely fault handling measures to avoid abnormal operation of the air conditioner or even system damage.

[0004] In a first aspect, embodiments of this application provide an exhaust temperature control method applicable to air conditioners, comprising: acquiring measured values ​​of an exhaust temperature sensor, condenser temperature, and evaporator temperature, wherein the exhaust temperature sensor is used to measure the exhaust temperature of the compressor; determining an exhaust superheat deviation based on the measured values ​​of the exhaust temperature sensor, the condenser temperature, and the evaporator temperature, wherein the exhaust superheat deviation is the deviation between a calculated value of the exhaust superheat and a preset value; and determining that the exhaust temperature sensor is faulty when the duration for which the exhaust superheat deviation is less than a deviation threshold is greater than a time threshold.

[0005] In some embodiments, determining the exhaust superheat deviation based on the measured value of the exhaust temperature sensor, the condenser temperature, and the evaporator temperature includes: determining a calculated value of the exhaust superheat based on the measured value of the exhaust temperature sensor and the condenser temperature; determining a preset value of the exhaust superheat based on the condenser temperature and the evaporator temperature; and determining the exhaust superheat deviation based on the calculated value and the preset value of the exhaust superheat.

[0006] In some embodiments, after determining that the exhaust temperature sensor is faulty, the exhaust temperature control method includes: determining the exhaust temperature of the compressor based on a preset value of the exhaust superheat and the condenser temperature; and controlling at least one of the compressor frequency and the opening degree of the throttle valve based on the compressor exhaust temperature.

[0007] In some embodiments, after determining that the exhaust temperature sensor is faulty and before determining the exhaust temperature of the compressor based on a preset value of the exhaust superheat and the condenser temperature, the exhaust temperature control method includes: controlling the compressor to reduce its frequency to lower the exhaust temperature of the compressor.

[0008] In some embodiments, after determining that the exhaust temperature sensor is faulty and before determining the compressor's exhaust temperature based on a preset value of the exhaust superheat and the condenser temperature, the exhaust temperature control method includes: increasing the opening of the throttle valve to reduce the compressor's exhaust temperature.

[0009] In some embodiments, acquiring the measured values ​​of the exhaust temperature sensor, the condenser temperature, and the evaporator temperature includes: when the air conditioner is in heating mode, acquiring the indoor heat exchanger temperature of the air conditioner as the condenser temperature and acquiring the outdoor heat exchanger temperature of the air conditioner as the evaporator temperature; when the air conditioner is in cooling mode, acquiring the outdoor heat exchanger temperature of the air conditioner as the condenser temperature and acquiring the indoor heat exchanger temperature of the air conditioner as the evaporator temperature.

[0010] In some embodiments, after determining that the exhaust temperature sensor is faulty, the exhaust temperature control method includes: acquiring the lubricating oil temperature and suction saturation temperature of the compressor; determining the oil temperature superheat of the compressor based on the lubricating oil temperature and suction saturation temperature of the compressor; and controlling at least one of the compressor frequency and the opening degree of the throttle valve based on the oil temperature superheat of the compressor.

[0011] Secondly, embodiments of this application provide an exhaust temperature control device applicable to air conditioners, comprising: a measurement acquisition module configured to acquire the measured values ​​of an exhaust temperature sensor, condenser temperature, and evaporator temperature, wherein the exhaust temperature sensor is used to measure the exhaust temperature of the compressor; a deviation calculation module configured to determine an exhaust superheat deviation based on the measured values ​​of the exhaust temperature sensor, the condenser temperature, and the evaporator temperature, wherein the exhaust superheat deviation is the deviation between the calculated value of the exhaust superheat and a preset value; and a fault determination module configured to determine a fault in the exhaust temperature sensor when the duration for which the exhaust superheat deviation is less than a deviation threshold is greater than a time threshold.

[0012] Thirdly, embodiments of this application provide an air conditioner, including: a memory storing a computer program; and a processor, wherein the computer program, when executed by the processor, implements the exhaust temperature control method as described in any of the above embodiments.

[0013] Fourthly, embodiments of this application provide a computer-readable storage medium having a computer program stored thereon, the computer program being loaded by a processor to execute the steps in the exhaust temperature control method described above.

[0014] The exhaust temperature control method provided in this application embodiment. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a flowchart of an exhaust temperature control method provided in some embodiments of this application;

[0017] Figure 2 This is a partial flowchart of an exhaust temperature control method provided in some embodiments of this application;

[0018] Figure 3 This is another partial flowchart of the exhaust temperature control method provided in some embodiments of this application;

[0019] Figure 4 This is another partial flowchart of the exhaust temperature control method provided in some embodiments of this application;

[0020] Figure 5 This is another partial flowchart of the exhaust temperature control method provided in some embodiments of this application;

[0021] Figure 6 This is another partial flowchart of the exhaust temperature control method provided in some embodiments of this application;

[0022] Figure 7 This is a structural diagram of an air conditioner provided in some embodiments of this application.

[0023] Explanation of key component symbols:

[0024] 1-Air conditioner, 10-Processor, 20-Memory. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0028] The use of "applies to" or "configured to" in this application implies open and inclusive language, which does not exclude the applicability to or configuration to devices performing additional tasks or steps. Additionally, the use of "based on" implies openness and inclusivity, because processes, steps, calculations, or other actions "based on" one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0029] In this application, the term "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be made without using these specific details. In other instances, well-known structures and processes are not described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0030] When the exhaust temperature sensor becomes detached, the exhaust temperature measured by the sensor will be lower than the actual exhaust temperature of the compressor. If the air conditioner is continued to be controlled based on the exhaust temperature measured by the sensor, it will cause abnormal operation of the air conditioner or even damage to the system.

[0031] like Figure 1As shown, in a first aspect, this application provides an exhaust temperature control method applicable to an air conditioner 1. The exhaust temperature control method includes S10 to S30, which can accurately detect whether the exhaust temperature sensing bulb has malfunctioned, such as becoming loose, and take timely fault handling measures to avoid abnormal operation or even system damage of the air conditioner 1.

[0032] S10: Obtain the measured values ​​of the exhaust temperature sensor, condenser temperature, and evaporator temperature. The exhaust temperature sensor is used to measure the exhaust temperature of the compressor.

[0033] The sources of the condenser and evaporator temperatures differ depending on the operating mode of air conditioner 1. In heating mode, the indoor heat exchanger acts as the condenser, and the outdoor heat exchanger acts as the evaporator; the temperature of the indoor heat exchanger is the condenser temperature, and the temperature of the outdoor heat exchanger is the evaporator temperature. In cooling mode, the outdoor heat exchanger acts as the condenser, and the indoor heat exchanger acts as the evaporator; the temperature of the outdoor heat exchanger is the condenser temperature, and the temperature of the indoor heat exchanger is the evaporator temperature.

[0034] S20: Determine the exhaust superheat deviation based on the measured values ​​of the exhaust temperature sensor, condenser temperature, and evaporator temperature. The exhaust superheat deviation is the difference between the calculated exhaust superheat value and the preset value.

[0035] The calculated value of exhaust superheat is determined based at least on the measured value of the exhaust temperature sensor and is directly related to the measured value of the exhaust temperature sensor. The preset value of exhaust superheat is determined based at least on the condenser temperature and evaporator temperature, using a preset exhaust superheat calculation model. The preset exhaust superheat calculation model can be predetermined based on reference data such as experimental test data and historical operating data, reflecting the correspondence between condenser temperature, evaporator temperature and exhaust superheat during the operation of air conditioner 1. The input parameters of the preset exhaust superheat calculation model include condenser temperature and evaporator temperature, and the output result is the preset value of exhaust superheat. For example, the preset exhaust superheat calculation model can be a preset exhaust superheat lookup table, and the preset value of exhaust superheat can be determined by looking up the table based on the condenser temperature and evaporator temperature.

[0036] S30: When the duration of the exhaust superheat deviation being less than the deviation threshold is greater than the time threshold, the exhaust temperature sensor is determined to be faulty.

[0037] When the exhaust superheat deviation is less than the deviation threshold, it indicates that the calculated value of the exhaust superheat is significantly lower than the preset value, and the exhaust temperature sensor may be loose. To further eliminate interfering factors, the duration of this state is calculated from the point when the exhaust superheat deviation is less than the deviation threshold to accurately determine whether the exhaust temperature sensor has malfunctioned, such as becoming loose. If the duration of this state is greater than the time threshold, it can be determined that the exhaust temperature sensor has indeed malfunctioned, such as becoming loose. If the duration of the exhaust superheat deviation being less than the deviation threshold is less than or equal to the time threshold, it can be determined that the exhaust superheat deviation is temporarily less than the deviation threshold due to interfering factors, and the exhaust temperature sensor has not malfunctioned, such as becoming loose. Interfering factors causing the exhaust superheat deviation to be temporarily less than the deviation threshold can include, for example, the frequency fluctuation of the compressor caused by high pressure or pipe temperature protection, resulting in the exhaust superheat deviation being temporarily less than the deviation threshold.

[0038] The exhaust temperature control method provided in this application determines the exhaust superheat deviation based on the measured value of the exhaust temperature sensor, the condenser temperature, and the evaporator temperature. Then, based on whether the duration of the exhaust superheat deviation being less than the deviation threshold is greater than the time threshold, it accurately determines whether the exhaust temperature sensor has malfunctioned, such as becoming loose. This allows for timely fault handling measures to prevent the air conditioner 1 from malfunctioning or even being damaged.

[0039] In some embodiments, S10 may include S11 to S12 to accurately obtain the condenser temperature and the evaporator temperature.

[0040] S11: When the air conditioner 1 is in heating mode, the indoor heat exchanger temperature of the air conditioner 1 is obtained as the condenser temperature, and the outdoor heat exchanger temperature of the air conditioner 1 is obtained as the evaporator temperature.

[0041] Here, the temperature of the indoor heat exchanger can be measured in real time by a temperature sensor installed on the indoor heat exchanger, and the temperature of the outdoor heat exchanger can be measured in real time by a temperature sensor installed on the outdoor heat exchanger.

[0042] S12: When the air conditioner 1 is in cooling mode, obtain the outdoor heat exchanger temperature of the air conditioner 1 as the condenser temperature, and obtain the indoor heat exchanger temperature of the air conditioner 1 as the evaporator temperature.

[0043] like Figure 2 As shown, in some embodiments, S20 may include S21 to S23 to accurately calculate the exhaust superheat deviation.

[0044] S21: Determine the calculated value of exhaust superheat based on the measured value of the exhaust temperature sensor and the condenser temperature. Here, the calculated value of exhaust superheat can be the difference between the measured value of the exhaust temperature sensor and the condenser temperature.

[0045] S22: Determine the preset value of exhaust superheat based on the condenser temperature and evaporator temperature.

[0046] Here, the preset value of exhaust superheat can be determined as described above, based on the condenser temperature and evaporator temperature, and according to a preset exhaust superheat calculation model. For example, the preset exhaust superheat calculation model can be a preset exhaust superheat lookup table; by looking up the table based on the condenser temperature and evaporator temperature, the preset value of exhaust superheat can be determined.

[0047] S23: Determine the exhaust superheat deviation based on the calculated and preset values ​​of exhaust superheat.

[0048] like Figure 3 As shown, in some embodiments, after S30, the exhaust temperature control method may include S40.

[0049] S40: Determine the compressor's discharge temperature based on the preset value of the discharge superheat and the condenser temperature.

[0050] When a fault is identified in the exhaust temperature sensor, such as a loose sensor, it can be determined that the sensor's measurement value deviates significantly from the actual exhaust temperature of the compressor. Therefore, the sensor's measurement cannot be used as the compressor's exhaust temperature, and the air conditioner 1 cannot be controlled based on this value. In this case, an alternative exhaust temperature can be calculated based on the preset exhaust superheat value and the condenser temperature, and this alternative exhaust temperature can be used as the compressor's exhaust temperature. The compressor's exhaust temperature determined in this way is approximately consistent with the actual exhaust temperature. This allows the air conditioner 1 to be controlled based on the compressor's exhaust temperature, ensuring that it continues to operate normally even when the exhaust temperature sensor malfunctions.

[0051] like Figure 4 As shown, in some examples, the exhaust temperature control method may include S301 after S30 and before S40.

[0052] S301: Controls the compressor to reduce its frequency in order to lower the compressor's exhaust temperature.

[0053] After determining that the exhaust temperature sensor has malfunctioned, such as becoming loose, and before taking fault handling measures such as S40, the compressor frequency can be reduced to lower the compressor's exhaust temperature, providing temporary protection for air conditioner 1 and preventing air conditioner 1 from malfunctioning or being damaged due to significantly high exhaust temperature.

[0054] like Figure 5 As shown, in some examples, the exhaust temperature control method may include S302 after S30 and before S40.

[0055] S302: Increase the opening of the throttle valve to reduce the compressor's discharge temperature.

[0056] After determining that the exhaust temperature sensor has malfunctioned, such as becoming loose, and before taking fault handling measures such as S40, the opening of the throttle valve can be increased to reduce the exhaust temperature of the compressor, providing temporary protection for the air conditioner 1 and preventing the air conditioner 1 from malfunctioning or being damaged due to a significantly high exhaust temperature.

[0057] In some examples, after S30 and before S40, S301 and S302 can be taken respectively, that is, to reduce the operating frequency of the compressor and increase the opening of the throttle valve, so as to reduce the exhaust temperature of the compressor and reliably provide temporary protection for the air conditioner 1, so as to avoid the air conditioner 1 from malfunctioning or being damaged due to significantly high exhaust temperature.

[0058] like Figure 6 As shown, in some embodiments, after S30, the exhaust temperature control method may include S51 to S53.

[0059] S51: Obtain the compressor's lubricating oil temperature and suction saturation temperature.

[0060] Here, the compressor's lubricating oil temperature can be measured in real time using an oil temperature sensor, which can be installed at the bottom of the compressor. The suction saturation temperature is the refrigerant saturation temperature corresponding to the compressor's suction pressure; that is, the critical temperature at which the refrigerant changes from a liquid to a gaseous state at that suction pressure. It can be determined by looking up a table or by calculation based on the compressor's suction pressure and the refrigerant's characteristics.

[0061] S52: Determine the compressor oil temperature superheat based on the compressor's lubricating oil temperature and suction saturation temperature.

[0062] Here, the compressor oil superheat can be the difference between the compressor lubricating oil temperature and the suction saturation temperature.

[0063] S53: Control at least one of the compressor frequency and the opening degree of the throttle valve based on the compressor oil temperature superheat.

[0064] In some examples, the compressor frequency can be controlled based on the compressor's oil superheat, but the throttle valve opening cannot be controlled. In other examples, the throttle valve opening can be controlled based on the compressor's oil superheat. In still other examples, both the compressor frequency and the throttle valve opening can be controlled based on the compressor's oil superheat.

[0065] After determining that the exhaust temperature sensor has malfunctioned, such as becoming loose, it can be confirmed that the sensor's measurement value has significantly deviated from the actual exhaust temperature of the compressor. Therefore, the sensor's measurement value cannot be used as the compressor's exhaust temperature, and thus, the air conditioner 1 cannot be controlled based on it. In this case, the compressor's oil superheat can be used instead of the compressor's exhaust temperature. Accordingly, at least one of the compressor's frequency and the throttle valve opening can be controlled based on the compressor's oil superheat, allowing the air conditioner 1 to continue operating normally even when the exhaust temperature sensor malfunctions.

[0066] Secondly, embodiments of this application provide an exhaust temperature control device applicable to an air conditioner 1, comprising: a measurement acquisition module configured to acquire the measured values ​​of an exhaust temperature sensor, condenser temperature, and evaporator temperature, wherein the exhaust temperature sensor is used to measure the exhaust temperature of the compressor; a deviation calculation module configured to determine an exhaust superheat deviation based on the measured values ​​of the exhaust temperature sensor, condenser temperature, and evaporator temperature, wherein the exhaust superheat deviation is the deviation between the calculated value of the exhaust superheat and a preset value; and a fault determination module configured to determine an exhaust temperature sensor fault when the duration for which the exhaust superheat deviation is less than a deviation threshold is greater than a time threshold.

[0067] like Figure 7 As shown, in a third aspect, embodiments of this application provide an air conditioner 1, including a processor 10 and a memory 20. The memory 20 stores a computer program, which, when executed by the processor 10, implements the exhaust temperature control method as described in any of the above embodiments. Here, the air conditioner 1 may further include a compressor, an exhaust temperature sensor, and a throttle valve.

[0068] Processor 10 is connected to memory 20 and can perform various actions and processes according to the program stored in memory 20. Specifically, processor 10 can be an integrated circuit chip with signal processing capabilities. The processor 10 can be a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, and can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor, and can be based on x86 architecture or ARM architecture.

[0069] Memory 20 may be volatile or non-volatile, or may include both. Non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory may be random access memory (RAM) used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct memory bus random access memory (DRRAM). It should be noted that memory 20 of the methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0070] Fourthly, embodiments of this application provide a computer-readable storage medium having a computer program stored thereon, the computer program being loaded by a processor 10 to execute the steps in the control method of any of the above embodiments.

[0071] For example, the aforementioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical discs (e.g., CDs (Compact Disks), DVDs (Digital Versatile Disks), etc.), smart cards, and flash memory devices (e.g., EPROMs (Erasable Programmable Read-Only Memory), cards, sticks, or key drives, etc.). The various computer-readable storage media described in the embodiments of this application may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0072] The above provides a detailed description of an exhaust temperature control method, apparatus, air conditioner, and computer-readable storage medium provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for controlling exhaust temperature, characterized in that, Applicable to air conditioners, including: The exhaust temperature sensor is used to measure the exhaust temperature of the compressor. The exhaust superheat deviation is determined based on the measured values ​​from the exhaust temperature sensor, the condenser temperature, and the evaporator temperature. The calculated value of exhaust superheat is determined based on the measured value of the exhaust temperature sensor and the condenser temperature. Based on the condenser temperature and the evaporator temperature, determine the preset value of the exhaust superheat; Based on the calculated value and preset value of the exhaust superheat, the exhaust superheat deviation is determined, and the exhaust superheat deviation is the deviation between the calculated value and the preset value of the exhaust superheat. When the duration for which the exhaust superheat deviation is less than the deviation threshold is greater than the time threshold, the exhaust temperature sensor is determined to be faulty.

2. The exhaust temperature control method according to claim 1, characterized in that, Obtain the measured values ​​of the exhaust temperature sensor, condenser temperature, and evaporator temperature, including: When the air conditioner is in heating mode, the indoor heat exchanger temperature is obtained as the condenser temperature, and the outdoor heat exchanger temperature is obtained as the evaporator temperature. When the air conditioner is in cooling mode, the outdoor heat exchanger temperature is obtained as the condenser temperature, and the indoor heat exchanger temperature is obtained as the evaporator temperature.

3. The exhaust temperature control method according to claim 1, characterized in that, After determining that the exhaust temperature sensor is faulty, the exhaust temperature control method includes: The exhaust temperature of the compressor is determined based on the preset value of the exhaust superheat and the condenser temperature. The compressor frequency and the opening degree of the throttle valve are controlled according to the compressor's discharge temperature.

4. The exhaust temperature control method according to claim 3, characterized in that, After determining that the exhaust temperature sensor is faulty, and before determining the compressor's exhaust temperature based on the preset value of the exhaust superheat and the condenser temperature, the exhaust temperature control method includes: The compressor frequency is reduced to lower the compressor's exhaust temperature.

5. The exhaust temperature control method according to claim 3, characterized in that, After determining that the exhaust temperature sensor is faulty, and before determining the compressor's exhaust temperature based on the preset value of the exhaust superheat and the condenser temperature, the exhaust temperature control method includes: Increase the opening of the throttle valve to reduce the discharge temperature of the compressor.

6. The exhaust temperature control method according to claim 1, characterized in that, After determining that the exhaust temperature sensor is faulty, the exhaust temperature control method includes: Obtain the lubricating oil temperature and suction saturation temperature of the compressor; The oil temperature superheat of the compressor is determined based on the lubricating oil temperature and the suction saturation temperature of the compressor. The compressor frequency and the opening degree of the throttle valve are controlled according to the compressor oil temperature superheat.

7. An exhaust temperature control device, characterized in that, Applicable to air conditioners, including: The measurement acquisition module is configured to acquire the measured values ​​of the exhaust temperature sensor, the condenser temperature, and the evaporator temperature, wherein the exhaust temperature sensor is used to measure the exhaust temperature of the compressor. The deviation calculation module is configured to determine the exhaust superheat deviation based on the measured values ​​of the exhaust temperature sensor, the condenser temperature, and the evaporator temperature. Determining the exhaust superheat deviation based on the measured values ​​of the exhaust temperature sensor, the condenser temperature, and the evaporator temperature includes: determining a calculated value of the exhaust superheat based on the measured values ​​of the exhaust temperature sensor and the condenser temperature; determining a preset value of the exhaust superheat based on the condenser temperature and the evaporator temperature; and determining the exhaust superheat deviation based on the calculated value and the preset value, wherein the exhaust superheat deviation is the deviation between the calculated value and the preset value of the exhaust superheat. The fault determination module is configured to determine that the exhaust temperature sensor is faulty when the duration during which the exhaust superheat deviation is less than the deviation threshold is greater than a time threshold.

8. An air conditioner, characterized in that, include: Memory, which stores computer programs; A processor, wherein the computer program, when executed by the processor, implements the exhaust temperature control method as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, It stores a computer program, which is loaded by a processor to execute the steps of the exhaust temperature control method according to any one of claims 1 to 6.

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