Air conditioner operation abnormality control method and device

Abstract

The application provides an air conditioner operation abnormality control method and device. In the method, when the air conditioner is in a refrigeration operation mode, the current outdoor environment temperature of the air conditioner, the current compressor operation frequency range and the current whole machine power are obtained, and the target whole machine power maximum value is determined based on a mapping relationship; when the current whole machine power is less than or equal to the target whole machine power maximum value, and after the air conditioner coil sensor falls off, the compressor, the outdoor fan and the indoor fan of the air conditioner are controlled for anti-freezing protection based on the air conditioner heat exchanger thin tube temperature; when the air conditioner is in a heating operation mode, and after the air conditioner coil sensor falls off, the compressor, the outdoor fan and the indoor fan of the air conditioner are controlled for overheating protection based on the air conditioner heat exchanger thick tube temperature. The method provided by the application can effectively protect the air conditioner from freezing and overheating, improve the air conditioner abnormality processing efficiency, and thus improve the stability of the air conditioner operation.

Description

Technical Field

[0001] This invention relates to the field of electrical control technology, specifically to a method and apparatus for controlling abnormal operation of an air conditioner. Additionally, it relates to an air conditioning device and a processor-readable storage medium. Background Technology

[0002] Air conditioners typically use temperature sensors detected by the coil unit during cooling operation for anti-freeze protection, preventing frost buildup on the indoor heat exchanger. If the coil unit sensor detaches, frost will form on the indoor heat exchanger and its inlet pipes, and anti-freeze protection will fail. Similarly, during heating operation, air conditioners use the same coil unit sensor for overheat protection, preventing excessive system pressure. If the sensor detaches, the detected temperature will be the same as the ambient indoor temperature, lower than the actual sensor temperature, failing to provide overheat protection. This results in continuous high-pressure operation and potential damage to the air conditioning unit. Therefore, in current air conditioners, when the coil unit sensor detaches, frost will form on the thin pipes of the indoor heat exchanger during the initial cooling phase. Prolonged operation will lead to frost buildup on the indoor heat exchanger, damaging the unit and causing a shutdown. During the initial heating phase, the system pressure and current will continuously rise. Prolonged operation will damage the unit or cause overcurrent failures, resulting in decreased operational stability, increased susceptibility to malfunctions, and a negative impact on the user experience. Therefore, designing a more reliable control scheme for handling air conditioner malfunctions is a pressing issue that needs to be addressed. Summary of the Invention

[0003] Therefore, the present invention provides a method and apparatus for controlling abnormal operation of air conditioners, in order to solve the defects of low processing efficiency and poor reliability of air conditioner operation in the existing air conditioner abnormal operation control schemes.

[0004] In a first aspect, the present invention provides a method for controlling abnormal operation of an air conditioner, comprising:

[0005] Determine the air conditioner's operating mode;

[0006] When the air conditioner is in cooling mode, the current outdoor ambient temperature, current compressor operating frequency range, and current total power are acquired. Based on the current outdoor ambient temperature, the current compressor operating frequency range, and a preset mapping relationship, a target maximum total power is determined. If the current total power is less than or equal to the target maximum total power, and the air conditioner coil sensor detaches, anti-freeze protection control is implemented for the air conditioner's compressor, outdoor fan, and indoor fan based on the detected temperature of the air conditioner heat exchanger's thin tube. The mapping relationship is the relationship between the outdoor ambient temperature, the compressor operating frequency range, and the maximum total power.

[0007] When the air conditioner is in heating mode and the air conditioner coil sensor detaches, overheat protection control is performed on the air conditioner compressor, outdoor fan and indoor fan based on the detected temperature of the air conditioner heat exchanger thick pipe.

[0008] Furthermore, before controlling the air conditioner's compressor, outdoor fan, and indoor fan, the following steps are also included:

[0009] Determine whether the air conditioning coil sensor has fallen off;

[0010] The determination of whether the air conditioning coil sensor has detached specifically includes:

[0011] The system acquires the first temperature value detected by the air conditioning coil sensor after the air conditioner has been running for a preset time, the second temperature value detected by the air conditioning coil sensor when the air conditioner is turned on, and the indoor ambient temperature value after the air conditioner has been running for a preset time.

[0012] Determine a first difference between the first temperature value and the second temperature value, and compare the first difference with a preset value for the temperature difference of the air conditioning coil to obtain a first comparison result;

[0013] A second difference between the first temperature value and the indoor ambient temperature value is determined, and the second difference is compared with a preset difference value to obtain a second comparison result; wherein, the preset difference value is a preset value between the indoor ambient temperature and the air conditioning coil temperature;

[0014] Based on the first comparison result and the second comparison result, determine whether the air conditioning coil sensor has detached.

[0015] Furthermore, the compressor, outdoor fan, and indoor fan of the air conditioner are controlled based on the detected temperature of the capillary tube of the air conditioner heat exchanger, specifically including:

[0016] Determine the preset values ​​for the first heat exchanger capillary tube temperature, the second heat exchanger capillary tube temperature, and the third heat exchanger capillary tube temperature; wherein the preset value for the second heat exchanger capillary tube temperature is greater than the preset value for the first heat exchanger capillary tube temperature and less than the preset value for the third heat exchanger capillary tube temperature.

[0017] When the temperature of the thin tube of the air conditioner heat exchanger is greater than or equal to the preset value of the temperature of the thin tube of the third heat exchanger, the compressor is controlled to operate at the third cooling frequency, the outdoor fan is controlled to operate at the third outdoor speed, and the indoor fan is controlled to operate at the third indoor speed.

[0018] When the temperature of the thin tube of the air conditioner heat exchanger is greater than or equal to the preset value of the second thin tube temperature and less than the preset value of the third thin tube temperature, the compressor is controlled to operate at the second cooling frequency, the outdoor fan operates at the second outdoor speed, and the indoor fan operates at the second indoor speed.

[0019] When the temperature of the thin tube of the air conditioner heat exchanger is greater than or equal to the preset value of the first thin tube temperature and less than the preset value of the second thin tube temperature, the compressor is controlled to operate at a first cooling frequency, the outdoor fan operates at a first outdoor speed, and the indoor fan operates at a first indoor speed.

[0020] When the temperature of the thin tube of the air conditioner heat exchanger is lower than the preset value of the temperature of the thin tube of the first heat exchanger, the compressor and the outdoor fan are controlled to stop running, and the indoor fan is controlled to run at the first indoor speed.

[0021] Wherein, the second cooling frequency is greater than the first cooling frequency and less than the third cooling frequency; the second external rotation speed is greater than the first external rotation speed and less than the third external rotation speed; the second internal rotation speed is greater than the first internal rotation speed and less than the third internal rotation speed.

[0022] Furthermore, the compressor, outdoor fan, and indoor fan of the air conditioner are controlled based on the detected temperature of the thick pipe of the air conditioner heat exchanger, specifically including:

[0023] Determine the preset values ​​for the coarse tube temperature of the first heat exchanger, the second heat exchanger, and the third heat exchanger; wherein the preset value for the coarse tube temperature of the second heat exchanger is greater than the preset value for the coarse tube temperature of the first heat exchanger and less than the preset value for the coarse tube temperature of the third heat exchanger.

[0024] When the temperature of the coarse tube of the air conditioner heat exchanger is greater than or equal to the preset value of the temperature of the coarse tube of the third heat exchanger, the compressor and the outdoor fan are controlled to stop running, and the indoor fan is controlled to run at the first indoor speed.

[0025] When the temperature of the coarse tube of the air conditioner heat exchanger is greater than or equal to the preset value of the temperature of the second coarse tube of the heat exchanger, and less than the preset value of the temperature of the coarse tube of the third heat exchanger, the compressor is controlled to operate at a first heating frequency, the outdoor fan is controlled to operate at a first outdoor speed, and the indoor fan is controlled to operate at a third indoor speed.

[0026] When the temperature of the coarse tube of the air conditioner heat exchanger is greater than or equal to the preset value of the first coarse tube temperature and less than the preset value of the second coarse tube temperature, the compressor is controlled to operate at a second heating frequency, the outdoor fan operates at a second outdoor speed, and the indoor fan operates at a second indoor speed.

[0027] When the temperature of the coarse tube of the air conditioner heat exchanger is lower than the preset value of the temperature of the first coarse tube of the heat exchanger, the compressor is controlled to operate at a third heating frequency, the outdoor fan is controlled to operate at a third outdoor speed, and the indoor fan is controlled to operate at a first indoor speed.

[0028] Wherein, the second heating frequency is greater than the first heating frequency and less than the third heating frequency; the second external rotation speed is greater than the first external rotation speed and less than the third external rotation speed; the second internal rotation speed is greater than the first internal rotation speed and less than the third internal rotation speed.

[0029] Furthermore, after determining the corresponding target maximum unit power, the method also includes: if the current unit power is greater than the target maximum unit power, determining the abnormality caused by the air conditioner evaporator being dirty or clogged, and controlling the activation of the evaporator self-cleaning function.

[0030] Furthermore, based on the current outdoor ambient temperature, the current compressor operating frequency range, and a preset mapping relationship, the corresponding target maximum unit power is determined. Specifically, this includes: using the current outdoor ambient temperature and the current compressor operating frequency range as indexes, searching for a matching maximum unit power in the mapping relationship, and determining the matched maximum unit power as the target maximum unit power.

[0031] Furthermore, before determining the air conditioner's operating mode, it also includes: pre-determining the mapping relationship between the corresponding outdoor ambient temperature, the compressor's operating frequency range, and the maximum power of the entire unit.

[0032] Secondly, the present invention also provides an air conditioner operation abnormality control device, comprising:

[0033] Operating mode determination unit, used to determine the operating mode of the air conditioner;

[0034] The anti-freeze protection unit is used to acquire the current outdoor ambient temperature, the current compressor operating frequency range, and the current total power of the air conditioner when it is in cooling mode; based on the current outdoor ambient temperature, the current compressor operating frequency range, and a preset mapping relationship, determine the corresponding target maximum total power; when the current total power is less than or equal to the target maximum total power, and the air conditioner coil sensor detaches, it performs anti-freeze protection control on the air conditioner's compressor, outdoor fan, and indoor fan based on the detected temperature of the air conditioner heat exchanger thin tube; wherein, the mapping relationship is the relationship between the outdoor ambient temperature, the compressor operating frequency range, and the maximum total power of the air conditioner.

[0035] The overheat protection unit is used to protect the compressor, outdoor fan, and indoor fan of the air conditioner when the air conditioner is in heating mode and the air conditioner coil sensor has detached. It is based on the detected temperature of the thick pipe of the air conditioner heat exchanger.

[0036] Furthermore, before controlling the air conditioner's compressor, outdoor fan, and indoor fan, it also includes: a coil sensor detachment detection unit, used to determine whether the air conditioner coil sensor has detached;

[0037] The coil sensor detachment detection unit is specifically used for:

[0038] The system acquires the first temperature value detected by the air conditioning coil sensor after the air conditioner has been running for a preset time, the second temperature value detected by the air conditioning coil sensor when the air conditioner is turned on, and the indoor ambient temperature value after the air conditioner has been running for a preset time.

[0039] Determine a first difference between the first temperature value and the second temperature value, and compare the first difference with a preset value for the temperature difference of the air conditioning coil to obtain a first comparison result;

[0040] A second difference between the first temperature value and the indoor ambient temperature value is determined, and the second difference is compared with a preset difference value to obtain a second comparison result; wherein, the preset difference value is a preset value between the indoor ambient temperature and the air conditioning coil temperature;

[0041] Based on the first comparison result and the second comparison result, determine whether the air conditioning coil sensor has detached.

[0042] Furthermore, the anti-freeze protection unit is specifically used for:

[0043] Determine the preset values ​​for the first heat exchanger capillary tube temperature, the second heat exchanger capillary tube temperature, and the third heat exchanger capillary tube temperature; wherein the preset value for the second heat exchanger capillary tube temperature is greater than the preset value for the first heat exchanger capillary tube temperature and less than the preset value for the third heat exchanger capillary tube temperature.

[0044] When the temperature of the thin tube of the air conditioner heat exchanger is greater than or equal to the preset value of the temperature of the thin tube of the third heat exchanger, the compressor is controlled to operate at the third cooling frequency, the outdoor fan is controlled to operate at the third outdoor speed, and the indoor fan is controlled to operate at the third indoor speed.

[0045] When the temperature of the thin tube of the air conditioner heat exchanger is greater than or equal to the preset value of the second thin tube temperature and less than the preset value of the third thin tube temperature, the compressor is controlled to operate at the second cooling frequency, the outdoor fan operates at the second outdoor speed, and the indoor fan operates at the second indoor speed.

[0046] When the temperature of the thin tube of the air conditioner heat exchanger is greater than or equal to the preset value of the first thin tube temperature and less than the preset value of the second thin tube temperature, the compressor is controlled to operate at a first cooling frequency, the outdoor fan operates at a first outdoor speed, and the indoor fan operates at a first indoor speed.

[0047] When the temperature of the thin tube of the air conditioner heat exchanger is lower than the preset value of the temperature of the thin tube of the first heat exchanger, the compressor and the outdoor fan are controlled to stop running, and the indoor fan is controlled to run at the first indoor speed.

[0048] Wherein, the second cooling frequency is greater than the first cooling frequency and less than the third cooling frequency; the second external rotation speed is greater than the first external rotation speed and less than the third external rotation speed; the second internal rotation speed is greater than the first internal rotation speed and less than the third internal rotation speed.

[0049] Furthermore, the overheat protection unit is specifically used for:

[0050] Determine the preset values ​​for the coarse tube temperature of the first heat exchanger, the second heat exchanger, and the third heat exchanger; wherein the preset value for the coarse tube temperature of the second heat exchanger is greater than the preset value for the coarse tube temperature of the first heat exchanger and less than the preset value for the coarse tube temperature of the third heat exchanger.

[0051] When the temperature of the coarse tube of the air conditioner heat exchanger is greater than or equal to the preset value of the temperature of the coarse tube of the third heat exchanger, the compressor and the outdoor fan are controlled to stop running, and the indoor fan is controlled to run at the first indoor speed.

[0052] When the temperature of the coarse tube of the air conditioner heat exchanger is greater than or equal to the preset value of the temperature of the second coarse tube of the heat exchanger, and less than the preset value of the temperature of the coarse tube of the third heat exchanger, the compressor is controlled to operate at a first heating frequency, the outdoor fan is controlled to operate at a first outdoor speed, and the indoor fan is controlled to operate at a third indoor speed.

[0053] When the temperature of the coarse tube of the air conditioner heat exchanger is greater than or equal to the preset value of the first coarse tube temperature and less than the preset value of the second coarse tube temperature, the compressor is controlled to operate at a second heating frequency, the outdoor fan operates at a second outdoor speed, and the indoor fan operates at a second indoor speed.

[0054] When the temperature of the coarse tube of the air conditioner heat exchanger is lower than the preset value of the temperature of the first coarse tube of the heat exchanger, the compressor is controlled to operate at a third heating frequency, the outdoor fan is controlled to operate at a third outdoor speed, and the indoor fan is controlled to operate at a first indoor speed.

[0055] Wherein, the second heating frequency is greater than the first heating frequency and less than the third heating frequency; the second external rotation speed is greater than the first external rotation speed and less than the third external rotation speed; the second internal rotation speed is greater than the first internal rotation speed and less than the third internal rotation speed.

[0056] Furthermore, after determining the corresponding target maximum unit power, it also includes: a self-cleaning control unit, used to determine the abnormality caused by dirt blockage in the air conditioner evaporator when the current unit power is greater than the target maximum unit power, and control the activation of the evaporator self-cleaning function.

[0057] Furthermore, the anti-freeze protection unit is specifically used to: use the current outdoor ambient temperature and the current compressor operating frequency range as indexes to find the matching maximum value of the whole machine power in the mapping relationship, and determine the matching maximum value of the whole machine power as the target maximum value of the whole machine power.

[0058] Furthermore, before determining the air conditioner's operating mode, a mapping relationship construction unit is included, which is used to predetermine the mapping relationship between the outdoor ambient temperature, the compressor's operating frequency range, and the maximum power of the entire unit corresponding to the air conditioner.

[0059] Thirdly, the present invention also provides an air conditioning device, including a finger recognition module, a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the air conditioning operation abnormality control method as described in any of the above.

[0060] Fourthly, the present invention also provides a processor-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the air conditioning operation abnormality control method as described in any of the above claims.

[0061] The air conditioner operation anomaly control method provided by this invention, when the air conditioner is in cooling mode, determines the corresponding target maximum unit power by acquiring the current outdoor ambient temperature, current compressor operating frequency range, and current unit power, and using a preset mapping relationship. If the current unit power is less than or equal to the target maximum unit power, and the air conditioner coil sensor detaches, anti-freeze protection control is implemented for the air conditioner compressor, outdoor fan, and indoor fan based on the detected temperature of the thin tube of the air conditioner heat exchanger. When the air conditioner is in heating mode, and the air conditioner coil sensor detaches, overheat protection control is implemented for the air conditioner compressor, outdoor fan, and indoor fan based on the detected temperature of the thick tube of the air conditioner heat exchanger. This method effectively protects the air conditioner from freezing and overheating, ensuring normal operation, preventing damage to the air conditioning equipment, improving the efficiency of handling air conditioner anomalies, and thus enhancing the stability of air conditioner operation. Attached Figure Description

[0062] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0063] Figure 1 This is a flowchart illustrating the air conditioning operation abnormality control method provided in an embodiment of the present invention;

[0064] Figure 2 This is a schematic diagram of the air conditioner operation abnormality control device provided in an embodiment of the present invention;

[0065] Figure 3 This is a schematic diagram of the physical structure of the air conditioning equipment provided in an embodiment of the present invention. Detailed Implementation

[0066] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0067] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0068] The following describes in detail the embodiments based on the air conditioning operation abnormality control method of the present invention. Figure 1 As shown, this is a flowchart illustrating the air conditioner operation abnormality control method provided in an embodiment of the present invention. The air conditioner is equipped with a processor; the processor is used to execute the following methods:

[0069] Step 101: Determine the air conditioner's operating mode.

[0070] In this embodiment of the invention, it is necessary to pre-determine the mapping relationship between the outdoor ambient temperature corresponding to the air conditioner, the compressor operating frequency range, and the maximum power of the entire unit. The air conditioner's operating mode mentioned in this step includes cooling operation mode, heating operation mode, and fan operation mode. In specific implementation, the air conditioner's operating mode can be pre-determined through input control signals, such as whether it is in cooling operation mode, heating operation mode, or fan operation mode. If the air conditioner is in cooling operation mode, then step 102 is executed; if the air conditioner is in heating operation mode, then step 103 is executed.

[0071] Step 102: When the air conditioner is in cooling mode, obtain the current outdoor ambient temperature, the current compressor operating frequency range, and the current total power of the air conditioner; based on the current outdoor ambient temperature, the current compressor operating frequency range, and a preset mapping relationship, determine the corresponding target total power value; when the current total power is less than or equal to the target total power value, and the air conditioner coil sensor detaches, perform anti-freeze protection control on the air conditioner compressor, outdoor fan, and indoor fan based on the detected air conditioner heat exchanger thin tube temperature; wherein, the mapping relationship is the relationship between the outdoor ambient temperature, the compressor operating frequency range, and the total power value of the air conditioner.

[0072] Before controlling the air conditioner's compressor, outdoor fan, and indoor fan, it is necessary to pre-determine whether the air conditioning coil sensor has detached. Specifically, firstly, the system acquires a first temperature value detected by the air conditioning coil sensor after a preset air conditioning running time, a second temperature value detected by the air conditioning coil sensor when the air conditioner is turned on, and the indoor ambient temperature value after the preset air conditioning running time. It then determines a first difference between the first and second temperature values ​​and compares this first difference with a preset difference value for the air conditioning coil temperature to obtain a first comparison result. Next, it determines a second difference between the first temperature value and the indoor ambient temperature value and compares this second difference with a preset difference value to obtain a second comparison result. The preset difference value is a preset value for the difference between the indoor ambient temperature and the air conditioning coil temperature. Based on the first and second comparison results, it determines whether the air conditioning coil sensor has detached.

[0073] The process involves determining the target maximum unit power based on the current outdoor ambient temperature, the current compressor operating frequency range, and a preset mapping relationship. Specifically, this includes: using the current outdoor ambient temperature and the current compressor operating frequency range as indexes, searching for a matching maximum unit power in the mapping relationship, and then determining the matched maximum unit power as the target maximum unit power. After determining the target maximum unit power, the process further includes: if the current unit power exceeds the target maximum unit power, identifying an anomaly caused by evaporator blockage, and controlling the activation of the evaporator self-cleaning function.

[0074] The air conditioner compressor, outdoor fan, and indoor fan are controlled based on the detected temperature of the air conditioner heat exchanger capillary tube. The specific implementation process includes: determining a first preset temperature value, a second preset temperature value, and a third preset temperature value for the air conditioner capillary tube; wherein the second preset temperature value is greater than the first preset temperature value and less than the third preset temperature value; when the air conditioner heat exchanger capillary tube temperature is greater than or equal to the third preset temperature value, the compressor is controlled to operate at a third cooling frequency, the outdoor fan at a third outdoor speed, and the indoor fan at a third indoor speed; when the air conditioner heat exchanger capillary tube temperature is greater than or equal to the second preset temperature value, the compressor is controlled to operate at a third cooling frequency, the outdoor fan at a third outdoor speed, and the indoor fan at a third indoor speed; when the air conditioner heat exchanger capillary tube temperature is greater than or equal to the second preset temperature value, the compressor is controlled to operate at a third cooling frequency, the outdoor fan at a third outdoor speed, and the indoor fan at a third indoor speed. When the temperature of the third heat exchanger capillary tube is less than the preset value of the first heat exchanger capillary tube, the compressor is controlled to operate at a second cooling frequency, the outdoor fan at a second outdoor speed, and the indoor fan at a second indoor speed. When the temperature of the air conditioning heat exchanger capillary tube is greater than or equal to the preset value of the first heat exchanger capillary tube and less than the preset value of the second heat exchanger capillary tube, the compressor is controlled to operate at a first cooling frequency, the outdoor fan at a first outdoor speed, and the indoor fan at a first indoor speed. When the temperature of the air conditioning heat exchanger capillary tube is less than the preset value of the first heat exchanger capillary tube, the compressor and the outdoor fan are stopped, and the indoor fan is controlled to operate at the first indoor speed. It should be noted that the second cooling frequency is greater than the first cooling frequency and less than the third cooling frequency; the second outdoor speed is greater than the first outdoor speed and less than the third outdoor speed; and the second indoor speed is greater than the first indoor speed and less than the third indoor speed.

[0075] Step 103: When the air conditioner is in heating mode and the air conditioner coil sensor has detached, overheat protection control is performed on the air conditioner compressor, outdoor fan and indoor fan based on the detected temperature of the air conditioner heat exchanger thick pipe.

[0076] The specific implementation process for controlling the air conditioner compressor, outdoor fan, and indoor fan based on the detected temperature of the coarse tube of the air conditioner heat exchanger includes: determining preset values ​​for the first, second, and third coarse tube temperatures of the air conditioner; wherein the second coarse tube temperature preset value is greater than the first coarse tube temperature preset value and less than the third coarse tube temperature preset value; when the air conditioner heat exchanger coarse tube temperature is greater than or equal to the third coarse tube temperature preset value, controlling the compressor and the outdoor fan to stop operating, and controlling the indoor fan to operate at a first indoor speed; when the air conditioner heat exchanger coarse tube temperature is greater than or equal to the second coarse tube temperature preset value. When the temperature of the coarse tube of the air conditioner heat exchanger is greater than or equal to the preset temperature of the first heat exchanger coarse tube, and less than the preset temperature of the second heat exchanger coarse tube, the compressor is controlled to operate at a first heating frequency, the outdoor fan at a first outdoor speed, and the indoor fan at a third indoor speed. When the temperature of the coarse tube of the air conditioner heat exchanger is less than the preset temperature of the first heat exchanger coarse tube, the compressor is controlled to operate at a second heating frequency, the outdoor fan at a second outdoor speed, and the indoor fan at a second indoor speed. When the temperature of the coarse tube of the air conditioner heat exchanger is less than the preset temperature of the first heat exchanger coarse tube, the compressor is controlled to operate at a third heating frequency, the outdoor fan at a third outdoor speed, and the indoor fan at a first indoor speed. It should be noted that the second heating frequency is greater than the first heating frequency and less than the third heating frequency; the second outdoor speed is greater than the first outdoor speed and less than the third outdoor speed; the second indoor speed is greater than the first indoor speed and less than the third indoor speed.

[0077] The following is a complete embodiment, which specifically includes the following steps (1)-(6):

[0078] (1) Acquire and calculate the difference between the first temperature value detected by the air conditioning coil sensor at the preset air conditioning operation time t1 and the second temperature value detected by the air conditioning coil sensor when the air conditioning is turned on, i.e., the first temperature value Tct1 - the second temperature value Tct0; and calculate the difference between the indoor ambient temperature value at the preset air conditioning operation time t1 and the temperature value of the air conditioning coil sensor at the preset operation time t1, i.e., the indoor ambient temperature value Tait1 - the first temperature value Tct1.

[0079] (2) Determine the air conditioner's operating mode: cooling mode, heating mode, or ventilation mode. If it is cooling mode, proceed to step (3); if it is heating mode, proceed to step (6); if it is ventilation mode, it will operate normally.

[0080] (3) Cooling mode: Based on the current outdoor ambient temperature, the current compressor operating frequency range and the preset mapping relationship, find the target total power maximum Pzmax under this environment (Pzmax is one of Pzmax1-Pzmax8, which is stored in the computer in advance).

[0081] When the current total power Pz > the target total power maximum Pzmax (i.e., one of Pzmax1-Pzmax8), the problem is caused by dirt blockage in the indoor unit evaporator (i.e., the air conditioner evaporator), and the air conditioner is controlled to turn on the indoor self-cleaning function; when the current total power Pz ≦ the target total power maximum Pzmax, the cause of dirt blockage is ruled out, and the process proceeds to step (4).

[0082] The preset mapping relationships are shown in the table below:

[0083]

[0084]

[0085] It should be noted that when an air conditioner becomes clogged during cooling, the cooling effect will be worse, the power will increase, and the indoor coil temperature will be higher. However, when the air conditioner coil sensor falls off, the temperature detected is close to the indoor ambient temperature, and the indoor coil temperature is also higher (for example, when the indoor ambient temperature is 27 degrees Celsius, the normal coil temperature is about 10 degrees Celsius. If the coil sensor does not fall off but the indoor heat exchanger is clogged, the indoor coil temperature can be too high, close to 27 degrees Celsius. When the coil sensor falls off, the indoor coil temperature is about 27 degrees Celsius, which is also close to the indoor ambient temperature. Therefore, it is necessary to rule out whether the high coil temperature is caused by cloggedness before cooling).

[0086] (4) Compare Tct1-Tct0≦A; Tait1-Tct1≦B. When both Tct1-Tct0≦A and Tait1-Tct1≦B are satisfied, it is determined that the air conditioning coil sensor is detached and proceeds to step (5); otherwise, it operates normally. For example: the range of values ​​for A and B is 0-6℃, and in this embodiment, A=B=3℃ is taken; t1 is approximately 2-10 minutes, and in this embodiment, t1=5 minutes is taken. For example: when the indoor temperature is 27 degrees Celsius, that is, Tait1 is approximately 27 degrees Celsius, the temperature value Tct0 of the air conditioning coil sensor when it is turned on is 27 degrees Celsius. If the sensor is detached, the temperature value Tct1 of the air conditioning coil sensor after running for 5 minutes is still close to 27 degrees Celsius; that is, Tct1-Tct0≦3℃, Tait1-Tct1≦3℃. For example, when the indoor temperature is 7 degrees Celsius for heating, that is, Tait1 is about 7 degrees Celsius. The temperature value Tct0 of the air conditioner coil sensor when the unit is turned on is 7 degrees Celsius. If the sensor falls off, the temperature value Tct1 of the air conditioner coil sensor after running for 5 minutes is still close to 7 degrees Celsius; that is, Tct1-Tct0≦3℃, Tait1-Tct1≦3℃.

[0087] (5) When the indoor coil detaches during cooling mode, the temperature of the thin tube of the indoor heat exchanger is used. Txi is used instead of Tc to control the compressor, outdoor fan, and indoor fan for anti-freeze protection.

[0088] a: When the capillary tube temperature of the air conditioner heat exchanger Txi is ≥ the preset value Txi3 of the third capillary tube temperature, the compressor operates at the third cooling frequency fzl3; the outdoor fan operates at the third outdoor speed (i.e., high speed); and the indoor fan operates at the third indoor speed (i.e., high speed). b: When the preset value Txi2 of the second capillary tube temperature is ≤ Txi of the air conditioner heat exchanger < Txi3 of the third capillary tube temperature, the compressor operates at the second cooling frequency fzl2; the outdoor fan operates at the second outdoor speed (i.e., medium speed); and the indoor fan operates at the second indoor speed (i.e., medium speed). c: When the preset value Txi1 of the first capillary tube temperature is ≤ Txi of the air conditioner heat exchanger < Txi2 of the second capillary tube temperature, the compressor operates at the first cooling frequency fzl1; the outdoor fan operates at the first outdoor speed (i.e., preset low speed); and the indoor fan operates at the first indoor speed (i.e., preset low speed). d: When the capillary tube temperature Txi of the air conditioner heat exchanger is less than the preset value Txi1 of the first capillary tube temperature, the compressor stops, the outdoor fan stops, and the indoor fan operates at the first internal speed. It should be noted that during air conditioning cooling, the indoor heat exchanger acts as an evaporator. The capillary tube temperature Txi of the indoor heat exchanger is the inlet temperature entering the indoor heat exchanger, representing the temperature of the entire heat exchanger. The higher Txi is, the less likely the indoor heat exchanger is to frost; the lower Txi is, the greater the possibility of frost formation. Therefore, it can replace Tc for anti-freeze protection, and the system will simultaneously report an indoor coil malfunction, awaiting repair.

[0089] (6) Heating Mode: When the unit is in heating mode, if the indoor coil detaches, the temperature of the coarse tube of the indoor heat exchanger is used. Tcu replaces Tc to control the compressor, outdoor fan and indoor fan for overheat protection.

[0090] a: When the temperature of the coarse tube of the air conditioner heat exchanger, Tcu, is ≥ the preset value of the third heat exchanger coarse tube temperature, Tcu3, the compressor stops, the outdoor fan stops, and the indoor fan operates at the first internal speed. b: When the preset value of the second heat exchanger coarse tube temperature, Tcu2, is ≤ the air conditioner heat exchanger coarse tube temperature, Tcu, is < the third heat exchanger coarse tube temperature, Tcu3, the compressor operates at the first heating frequency, fzr1; the outdoor fan operates at the first outdoor speed (i.e., at the preset low speed); and the indoor fan operates at the third internal speed (i.e., at the preset high speed). c: When the preset value of the first heat exchanger coarse tube temperature, Tcu1, is ≤ the air conditioner heat exchanger coarse tube temperature, Tcu, is < the second heat exchanger coarse tube temperature, Tcu2, the compressor operates at the second heating frequency, fzr2; the outdoor fan operates at the second outdoor speed (i.e., at the preset medium speed); and the indoor fan operates at the second internal speed (i.e., at the preset medium speed). d: When the coarse pipe temperature Tcu of the air conditioner heat exchanger is less than the preset value Tcu1 of the first coarse pipe temperature of the heat exchanger, the compressor operates at the third heating frequency fzr3; the outdoor fan operates at the third outdoor speed (i.e., the preset high-speed operation); and the indoor fan operates at the first indoor speed (i.e., the preset low-speed operation). It should be noted that when the air conditioner is heating, the indoor heat exchanger is equivalent to the condenser. The coarse pipe temperature Tcu of the indoor heat exchanger is the inlet temperature entering the indoor heat exchanger, representing the temperature of the entire heat exchanger. The higher the Tcu, the more likely the indoor heat exchanger is to overheat and trigger protection; the lower the Tcu, the less likely the indoor heat exchanger is to overheat and trigger protection. Therefore, it can replace Tc for overheat protection, and the system will simultaneously report an indoor coil malfunction, awaiting repair.

[0091] Specifically, the parameters described in the above embodiments are as follows: Tc is the temperature of the air conditioning coil sensor (i.e., the indoor coil sensor); Tct1 is the temperature value of the air conditioning coil sensor after a preset running time t1; Tct0 is the temperature value of the air conditioning coil sensor when the unit is turned on; A is the preset value of the air conditioning coil temperature difference; Tai is the indoor ambient temperature; Tait1 is the indoor ambient temperature value after a preset running time t1; Tait0 is the indoor ambient temperature value when the unit is turned on; B is the preset value of the difference between the indoor ambient temperature and the indoor coil temperature; Tai1, Tai2, and Tai3 are the preset values ​​of the indoor ambient temperature sensor, Tai1 < Tai2 < Tai3; Tao is the outdoor ambient temperature; Tao1 is the preset value of the outdoor ambient temperature sensor; f is the compressor frequency; f1, f2, and f3 are the preset values ​​of the compressor frequency, f1 < f2 < f3; fzl1, fzl2, and fzl3 are the compressor cooling operating frequencies, and the first cooling frequency f zl1 < second cooling frequency fzl2 < third cooling frequency fzl3; fzr1, fzr2, fzr3 are the compressor heating operation frequencies, with the first heating frequency fzr1 < the second heating frequency fzr2 < the third heating frequency fzr3; Txi is the temperature of the thin tube of the indoor heat exchanger; Txi1, Txi2, Txi3 are the preset values ​​of the thin tube temperature of the indoor heat exchanger, with the first heat exchanger thin tube temperature preset value Txi1 < the second heat exchanger thin tube temperature preset value Txi2 < the third heat exchanger thin tube temperature preset value Txi3; Tcu is the temperature of the thick tube of the indoor heat exchanger; Tcu1, Tcu2, Tcu3 are the preset values ​​of the thick tube temperature of the indoor heat exchanger, with the first heat exchanger thick tube temperature preset value Tcu1 < the second heat exchanger thick tube temperature preset value Tcu2 < the third heat exchanger thick tube temperature preset value Tcu3; Pz is the total power; Pzmax is the maximum total power; Pzmax1-Pzmax8 are different target maximum total power values.

[0092] The air conditioner operation anomaly control method described in this invention, when the air conditioner is in cooling mode, determines the target maximum unit power by acquiring the current outdoor ambient temperature, current compressor operating frequency range, and current unit power, and using a preset mapping relationship. If the current unit power is less than or equal to the target maximum unit power, and the air conditioner coil sensor detaches, anti-freeze protection control is implemented for the air conditioner compressor, outdoor fan, and indoor fan based on the detected temperature of the thin tube of the air conditioner heat exchanger. When the air conditioner is in heating mode, and the air conditioner coil sensor detaches, overheat protection control is implemented for the air conditioner compressor, outdoor fan, and indoor fan based on the detected temperature of the thick tube of the air conditioner heat exchanger. This method effectively protects the air conditioner from freezing and overheating, ensuring normal operation, preventing damage to the air conditioning equipment, improving the efficiency of handling air conditioner anomalies, and thus enhancing the stability of air conditioner operation.

[0093] Corresponding to the air conditioner malfunction control method provided above, this invention also provides an air conditioner malfunction control device. Since the embodiment of this device is similar to the method embodiment described above, the description is relatively simple. For relevant details, please refer to the description in the method embodiment section above. The embodiments of the air conditioner malfunction control device described below are merely illustrative. Please refer to... Figure 2 As shown, it is a structural schematic diagram of an air conditioner operation abnormality control device provided in an embodiment of the present invention.

[0094] The air conditioner operation abnormality control device of the present invention specifically includes the following parts:

[0095] The operation mode determination unit 201 is used to determine the operation mode of the air conditioner;

[0096] The anti-freeze protection unit 202 is used to acquire the current outdoor ambient temperature, the current compressor operating frequency range, and the current total power of the air conditioner when the air conditioner is in cooling operation mode; determine the corresponding target total power value based on the current outdoor ambient temperature, the current compressor operating frequency range, and a preset mapping relationship; and perform anti-freeze protection control on the air conditioner's compressor, outdoor fan, and indoor fan based on the detected air conditioner heat exchanger thin tube temperature when the current total power is less than or equal to the target total power value and the air conditioner coil sensor has detached. The mapping relationship is the relationship between the outdoor ambient temperature, the compressor operating frequency range, and the total power value of the air conditioner.

[0097] The overheat protection unit 203 is used to perform overheat protection control on the air conditioner compressor, outdoor fan and indoor fan based on the detected temperature of the thick pipe of the air conditioner heat exchanger when the air conditioner is in heating mode and the air conditioner coil sensor has fallen off.

[0098] Furthermore, before controlling the air conditioner's compressor, outdoor fan, and indoor fan, it also includes: a coil sensor detachment detection unit, used to determine whether the air conditioner coil sensor has detached;

[0099] The coil sensor detachment detection unit is specifically used for:

[0100] The system acquires the first temperature value detected by the air conditioning coil sensor after the air conditioner has been running for a preset time, the second temperature value detected by the air conditioning coil sensor when the air conditioner is turned on, and the indoor ambient temperature value after the air conditioner has been running for a preset time.

[0101] Determine a first difference between the first temperature value and the second temperature value, and compare the first difference with a preset value for the temperature difference of the air conditioning coil to obtain a first comparison result;

[0102] A second difference between the first temperature value and the indoor ambient temperature value is determined, and the second difference is compared with a preset difference value to obtain a second comparison result; wherein, the preset difference value is a preset value between the indoor ambient temperature and the air conditioning coil temperature;

[0103] Based on the first comparison result and the second comparison result, determine whether the air conditioning coil sensor has detached.

[0104] Furthermore, the anti-freeze protection unit is specifically used for:

[0105] Determine the preset values ​​for the first heat exchanger capillary tube temperature, the second heat exchanger capillary tube temperature, and the third heat exchanger capillary tube temperature; wherein the preset value for the second heat exchanger capillary tube temperature is greater than the preset value for the first heat exchanger capillary tube temperature and less than the preset value for the third heat exchanger capillary tube temperature.

[0106] When the temperature of the thin tube of the air conditioner heat exchanger is greater than or equal to the preset value of the temperature of the thin tube of the third heat exchanger, the compressor is controlled to operate at the third cooling frequency, the outdoor fan is controlled to operate at the third outdoor speed, and the indoor fan is controlled to operate at the third indoor speed.

[0107] When the temperature of the thin tube of the air conditioner heat exchanger is greater than or equal to the preset value of the second thin tube temperature and less than the preset value of the third thin tube temperature, the compressor is controlled to operate at the second cooling frequency, the outdoor fan operates at the second outdoor speed, and the indoor fan operates at the second indoor speed.

[0108] When the temperature of the thin tube of the air conditioner heat exchanger is greater than or equal to the preset value of the first thin tube temperature and less than the preset value of the second thin tube temperature, the compressor is controlled to operate at a first cooling frequency, the outdoor fan operates at a first outdoor speed, and the indoor fan operates at a first indoor speed.

[0109] When the temperature of the thin tube of the air conditioner heat exchanger is lower than the preset value of the temperature of the thin tube of the first heat exchanger, the compressor and the outdoor fan are controlled to stop running, and the indoor fan is controlled to run at the first indoor speed.

[0110] Wherein, the second cooling frequency is greater than the first cooling frequency and less than the third cooling frequency; the second external rotation speed is greater than the first external rotation speed and less than the third external rotation speed; the second internal rotation speed is greater than the first internal rotation speed and less than the third internal rotation speed.

[0111] Furthermore, the overheat protection unit is specifically used for:

[0112] Determine the preset values ​​for the coarse tube temperature of the first heat exchanger, the second heat exchanger, and the third heat exchanger; wherein the preset value for the coarse tube temperature of the second heat exchanger is greater than the preset value for the coarse tube temperature of the first heat exchanger and less than the preset value for the coarse tube temperature of the third heat exchanger.

[0113] When the temperature of the coarse tube of the air conditioner heat exchanger is greater than or equal to the preset value of the temperature of the coarse tube of the third heat exchanger, the compressor and the outdoor fan are controlled to stop running, and the indoor fan is controlled to run at the first indoor speed.

[0114] When the temperature of the coarse tube of the air conditioner heat exchanger is greater than or equal to the preset value of the temperature of the second coarse tube of the heat exchanger, and less than the preset value of the temperature of the coarse tube of the third heat exchanger, the compressor is controlled to operate at a first heating frequency, the outdoor fan is controlled to operate at a first outdoor speed, and the indoor fan is controlled to operate at a third indoor speed.

[0115] When the temperature of the coarse tube of the air conditioner heat exchanger is greater than or equal to the preset value of the first coarse tube temperature and less than the preset value of the second coarse tube temperature, the compressor is controlled to operate at a second heating frequency, the outdoor fan operates at a second outdoor speed, and the indoor fan operates at a second indoor speed.

[0116] When the temperature of the coarse tube of the air conditioner heat exchanger is lower than the preset value of the temperature of the first coarse tube of the heat exchanger, the compressor is controlled to operate at a third heating frequency, the outdoor fan is controlled to operate at a third outdoor speed, and the indoor fan is controlled to operate at a first indoor speed.

[0117] Wherein, the second heating frequency is greater than the first heating frequency and less than the third heating frequency; the second external rotation speed is greater than the first external rotation speed and less than the third external rotation speed; the second internal rotation speed is greater than the first internal rotation speed and less than the third internal rotation speed.

[0118] Furthermore, after determining the corresponding target maximum unit power, it also includes: a self-cleaning control unit, used to determine the abnormality caused by dirt blockage in the air conditioner evaporator when the current unit power is greater than the target maximum unit power, and control the activation of the evaporator self-cleaning function.

[0119] Furthermore, the anti-freeze protection unit is specifically used to: use the current outdoor ambient temperature and the current compressor operating frequency range as indexes to find the matching maximum value of the whole machine power in the mapping relationship, and determine the matching maximum value of the whole machine power as the target maximum value of the whole machine power.

[0120] Furthermore, before determining the air conditioner's operating mode, a mapping relationship construction unit is included, which is used to predetermine the mapping relationship between the outdoor ambient temperature, the compressor's operating frequency range, and the maximum power of the entire unit corresponding to the air conditioner.

[0121] The air conditioner operation anomaly control device described in this embodiment of the invention, when the air conditioner is in cooling mode, determines the corresponding target maximum unit power by acquiring the current outdoor ambient temperature, the current compressor operating frequency range, and the current total unit power, and using a preset mapping relationship. If the current total unit power is less than or equal to the target maximum unit power, and the air conditioner coil sensor detaches, anti-freeze protection control is performed on the air conditioner compressor, outdoor fan, and indoor fan based on the detected temperature of the thin tube of the air conditioner heat exchanger. When the air conditioner is in heating mode, and the air conditioner coil sensor detaches, overheat protection control is performed on the air conditioner compressor, outdoor fan, and indoor fan based on the detected temperature of the thick tube of the air conditioner heat exchanger. This device effectively provides anti-freeze and overheat protection for the air conditioner, ensuring normal operation, preventing damage to the air conditioning equipment, improving the efficiency of handling air conditioner anomalies, and thus enhancing the stability of air conditioner operation.

[0122] Corresponding to the air conditioning malfunction control method provided above, this invention also provides an air conditioning device. Since the embodiment of this air conditioning device is similar to the embodiment of the method described above, the description is relatively simple. For relevant details, please refer to the description in the method embodiment section above. The air conditioning device described below is merely illustrative. Figure 3The diagram shown is a schematic representation of the physical structure of an air conditioning device disclosed in an embodiment of the present invention. The air conditioning device may include: a processor 301, a memory 302, and a finger recognition module 303, wherein the finger recognition module 303 is connected to the processor. The processor 301 can call logic instructions in the memory to execute an air conditioner operation abnormality control method. This method includes: determining the air conditioner's operating mode; when the air conditioner is in cooling mode, acquiring the current outdoor ambient temperature, the current compressor operating frequency range, and the current total power of the air conditioner; determining the corresponding target total power value based on the current outdoor ambient temperature, the current compressor operating frequency range, and a preset mapping relationship; when the current total power is less than or equal to the target total power value, and the air conditioner coil sensor detaches, performing anti-freeze protection control on the air conditioner's compressor, outdoor fan, and indoor fan based on the detected temperature of the air conditioner's heat exchanger thin tube; wherein the mapping relationship is the relationship between the air conditioner's corresponding outdoor ambient temperature, the compressor operating frequency range, and the total power value; when the air conditioner is in heating mode, and the air conditioner coil sensor detaches, performing overheat protection control on the air conditioner's compressor, outdoor fan, and indoor fan based on the detected temperature of the air conditioner's heat exchanger thick tube.

[0123] Furthermore, the logical instructions in the aforementioned memory 302 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as memory chips, USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0124] On the other hand, embodiments of the present invention also provide a computer program product, the computer program product including a computer program stored on a processor-readable storage medium, the computer program including program instructions, and when the program instructions are executed by a computer, the computer can execute the air conditioner operation abnormality control method provided in the above-described method embodiments. The method includes: determining the air conditioner's operating mode; when the air conditioner is in cooling mode, acquiring the current outdoor ambient temperature, the current compressor operating frequency range, and the current total power of the air conditioner; determining the corresponding target total power maximum value based on the current outdoor ambient temperature, the current compressor operating frequency range, and a preset mapping relationship; when the current total power is less than or equal to the target total power maximum value, and the air conditioner coil sensor detaches, performing anti-freeze protection control on the air conditioner's compressor, outdoor fan, and indoor fan based on the detected temperature of the air conditioner heat exchanger thin tube; wherein, the mapping relationship is the relationship between the air conditioner's corresponding outdoor ambient temperature, the compressor operating frequency range, and the total power maximum value; when the air conditioner is in heating mode, and the air conditioner coil sensor detaches, performing overheat protection control on the air conditioner's compressor, outdoor fan, and indoor fan based on the detected temperature of the air conditioner heat exchanger thick tube.

[0125] In another aspect, embodiments of the present invention also provide a processor-readable storage medium storing a computer program, which, when executed by a processor, implements the air conditioner operation anomaly control method provided in the above embodiments. The method includes: determining the air conditioner's operating mode; when the air conditioner is in cooling mode, acquiring the current outdoor ambient temperature, the current compressor operating frequency range, and the current total power of the air conditioner; determining a target maximum total power based on the current outdoor ambient temperature, the current compressor operating frequency range, and a preset mapping relationship; when the current total power is less than or equal to the target maximum total power, and the air conditioner coil sensor detaches, performing anti-freeze protection control on the air conditioner's compressor, outdoor fan, and indoor fan based on the detected temperature of the air conditioner heat exchanger thin tube; wherein the mapping relationship is the relationship between the air conditioner's outdoor ambient temperature, the compressor operating frequency range, and the maximum total power; when the air conditioner is in heating mode, and the air conditioner coil sensor detaches, performing overheat protection control on the air conditioner's compressor, outdoor fan, and indoor fan based on the detected temperature of the air conditioner heat exchanger thick tube.

[0126] The processor-readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to magnetic memory (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO)), optical memory (e.g., CD, DVD, BD, HVD), and semiconductor memory (e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)).

[0127] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0128] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0129] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for controlling abnormal operation of an air conditioner, characterized in that, include: Determine the air conditioner's operating mode; When the air conditioner is in cooling mode, obtain the current outdoor ambient temperature, the current compressor operating frequency range, and the current total power of the air conditioner. Based on the current outdoor ambient temperature, the current compressor operating frequency range, and the preset mapping relationship, the corresponding target maximum unit power is determined; When the current total power is less than or equal to the target total power, and the air conditioning coil sensor detaches, anti-freeze protection control is implemented for the air conditioner compressor, outdoor fan, and indoor fan based on the detected air conditioner heat exchanger tube temperature; wherein, the mapping relationship is the relationship between the outdoor ambient temperature corresponding to the air conditioner, the compressor operating frequency range, and the maximum total power. When the air conditioner is in heating mode and the air conditioner coil sensor falls off, the compressor, outdoor fan and indoor fan of the air conditioner are protected against overheating based on the detected temperature of the thick pipe of the air conditioner heat exchanger. Before controlling the air conditioner's compressor, outdoor fan, and indoor fan, the following steps are also included: Determine whether the air conditioning coil sensor has fallen off; The determination of whether the air conditioning coil sensor has detached specifically includes: The system acquires the first temperature value detected by the air conditioning coil sensor after the air conditioner has been running for a preset time, the second temperature value detected by the air conditioning coil sensor when the air conditioner is turned on, and the indoor ambient temperature value after the air conditioner has been running for a preset time. Determine a first difference between the first temperature value and the second temperature value, and compare the first difference with a preset value for the temperature difference of the air conditioning coil to obtain a first comparison result; A second difference between the first temperature value and the indoor ambient temperature value is determined, and the second difference is compared with a preset difference value to obtain a second comparison result; wherein, the preset difference value is a preset value between the indoor ambient temperature and the air conditioning coil temperature; Based on the first comparison result and the second comparison result, determine whether the air conditioning coil sensor has detached.

2. The air conditioning operation abnormality control method according to claim 1, characterized in that, The compressor, outdoor fan, and indoor fan of the air conditioner are controlled based on the detected temperature of the capillary tube of the air conditioner heat exchanger, specifically including: Determine the preset values ​​for the first heat exchanger capillary tube temperature, the second heat exchanger capillary tube temperature, and the third heat exchanger capillary tube temperature; wherein the preset value for the second heat exchanger capillary tube temperature is greater than the preset value for the first heat exchanger capillary tube temperature and less than the preset value for the third heat exchanger capillary tube temperature. When the temperature of the thin tube of the air conditioner heat exchanger is greater than or equal to the preset value of the temperature of the thin tube of the third heat exchanger, the compressor is controlled to operate at the third cooling frequency, the outdoor fan is controlled to operate at the third outdoor speed, and the indoor fan is controlled to operate at the third indoor speed. When the temperature of the thin tube of the air conditioner heat exchanger is greater than or equal to the preset value of the second thin tube temperature and less than the preset value of the third thin tube temperature, the compressor is controlled to operate at the second cooling frequency, the outdoor fan operates at the second outdoor speed, and the indoor fan operates at the second indoor speed. When the temperature of the thin tube of the air conditioner heat exchanger is greater than or equal to the preset value of the first thin tube temperature and less than the preset value of the second thin tube temperature, the compressor is controlled to operate at a first cooling frequency, the outdoor fan operates at a first outdoor speed, and the indoor fan operates at a first indoor speed. When the temperature of the thin tube of the air conditioner heat exchanger is lower than the preset value of the temperature of the thin tube of the first heat exchanger, the compressor and the outdoor fan are controlled to stop running, and the indoor fan is controlled to run at the first indoor speed. Wherein, the second cooling frequency is greater than the first cooling frequency and less than the third cooling frequency; the second external rotation speed is greater than the first external rotation speed and less than the third external rotation speed; the second internal rotation speed is greater than the first internal rotation speed and less than the third internal rotation speed.

3. The air conditioning operation abnormality control method according to claim 1, characterized in that, The compressor, outdoor fan, and indoor fan of the air conditioner are controlled based on the detected temperature of the thick pipe of the air conditioner heat exchanger, specifically including: Determine the preset values ​​for the coarse tube temperature of the first heat exchanger, the second heat exchanger, and the third heat exchanger; wherein the preset value for the coarse tube temperature of the second heat exchanger is greater than the preset value for the coarse tube temperature of the first heat exchanger and less than the preset value for the coarse tube temperature of the third heat exchanger. When the temperature of the coarse tube of the air conditioner heat exchanger is greater than or equal to the preset value of the temperature of the coarse tube of the third heat exchanger, the compressor and the outdoor fan are controlled to stop running, and the indoor fan is controlled to run at the first indoor speed. When the temperature of the coarse tube of the air conditioner heat exchanger is greater than or equal to the preset value of the temperature of the second coarse tube of the heat exchanger, and less than the preset value of the temperature of the coarse tube of the third heat exchanger, the compressor is controlled to operate at a first heating frequency, the outdoor fan is controlled to operate at a first outdoor speed, and the indoor fan is controlled to operate at a third indoor speed. When the temperature of the coarse tube of the air conditioner heat exchanger is greater than or equal to the preset value of the first coarse tube temperature and less than the preset value of the second coarse tube temperature, the compressor is controlled to operate at a second heating frequency, the outdoor fan operates at a second outdoor speed, and the indoor fan operates at a second indoor speed. When the temperature of the coarse tube of the air conditioner heat exchanger is lower than the preset value of the temperature of the first coarse tube of the heat exchanger, the compressor is controlled to operate at a third heating frequency, the outdoor fan is controlled to operate at a third outdoor speed, and the indoor fan is controlled to operate at a first indoor speed. Wherein, the second heating frequency is greater than the first heating frequency and less than the third heating frequency; the second external rotation speed is greater than the first external rotation speed and less than the third external rotation speed; the second internal rotation speed is greater than the first internal rotation speed and less than the third internal rotation speed.

4. The air conditioning operation abnormality control method according to claim 1, characterized in that, After determining the corresponding target maximum unit power, the method further includes: if the current unit power is greater than the target maximum unit power, determining the abnormality caused by the air conditioner evaporator being dirty or clogged, and controlling the activation of the evaporator self-cleaning function.

5. The air conditioning operation abnormality control method according to claim 1, characterized in that, Based on the current outdoor ambient temperature, the current compressor operating frequency range, and a preset mapping relationship, the corresponding target maximum unit power is determined, specifically including: Using the current outdoor ambient temperature and the current compressor operating frequency range as indexes, the matching maximum unit power is found in the mapping relationship, and the matching maximum unit power is determined as the target maximum unit power.

6. The air conditioning operation abnormality control method according to claim 1, characterized in that, Before determining the air conditioner's operating mode, it is also necessary to: pre-determine the mapping relationship between the corresponding outdoor ambient temperature, the compressor's operating frequency range, and the maximum power of the entire unit.

7. An air conditioner malfunction control device, characterized in that, include: Operating mode determination unit, used to determine the operating mode of the air conditioner; The anti-freeze protection unit is used to obtain the current outdoor ambient temperature, the current compressor operating frequency range, and the current total power of the air conditioner when the air conditioner is in cooling operation mode. Based on the current outdoor ambient temperature, the current compressor operating frequency range, and the preset mapping relationship, the corresponding target maximum unit power is determined; When the current total power is less than or equal to the target total power, and the air conditioning coil sensor detaches, anti-freeze protection control is implemented for the air conditioner compressor, outdoor fan, and indoor fan based on the detected air conditioner heat exchanger tube temperature; wherein, the mapping relationship is the relationship between the outdoor ambient temperature corresponding to the air conditioner, the compressor operating frequency range, and the maximum total power. The overheat protection unit is used to protect the compressor, outdoor fan and indoor fan of the air conditioner when the air conditioner is in heating mode and the air conditioner coil sensor has fallen off, based on the detected temperature of the thick tube of the air conditioner heat exchanger. Before controlling the air conditioner's compressor, outdoor fan, and indoor fan, the following steps are also included: Determine whether the air conditioning coil sensor has fallen off; The determination of whether the air conditioning coil sensor has detached specifically includes: The system acquires the first temperature value detected by the air conditioning coil sensor after the air conditioner has been running for a preset time, the second temperature value detected by the air conditioning coil sensor when the air conditioner is turned on, and the indoor ambient temperature value after the air conditioner has been running for a preset time. Determine a first difference between the first temperature value and the second temperature value, and compare the first difference with a preset value for the temperature difference of the air conditioning coil to obtain a first comparison result; A second difference between the first temperature value and the indoor ambient temperature value is determined, and the second difference is compared with a preset difference value to obtain a second comparison result; wherein, the preset difference value is a preset value between the indoor ambient temperature and the air conditioning coil temperature; Based on the first comparison result and the second comparison result, determine whether the air conditioning coil sensor has detached.

8. An air conditioning device, comprising a finger recognition module, a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the air conditioning operation abnormality control method as described in any one of claims 1 to 6.

9. A processor-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the air conditioning operation abnormality control method as described in any one of claims 1 to 6.

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