Air conditioner suction sensor abnormality processing method and device

Abstract

The application provides a kind of air conditioner suction sensor abnormality processing method and device.The method is as follows: in the case of determining air conditioner suction sensor abnormality, based on the obtained current corresponding indoor environment temperature of air conditioner and compressor actual frequency and preset corresponding relationship, determine the target suction superheat preset value corresponding to current air conditioner;Then, based on the determined air conditioner compressor frequency coefficient, environmental temperature coefficient, air conditioner fan coefficient, target suction superheat preset value and the detection temperature of air conditioner coil sensor, obtain the temperature value of air conditioner compressor suction sensor;Further determine the actual suction temperature of air conditioner compressor.The method provided by the application can effectively solve the defect of air conditioner equipment running abnormally caused by air conditioner suction sensor disengagement, so that the actual suction temperature of air conditioner compressor can still be detected when the air conditioner suction sensor falls off to ensure the normal operation of air conditioner equipment, thereby improving the reliability of air conditioner equipment operation.

Description

Technical Field

[0001] This invention relates to the field of electrical control technology, specifically to a method and apparatus for handling abnormalities in an air conditioner's intake sensor. Additionally, it relates to an air conditioning device and a processor-readable storage medium. Background Technology

[0002] With the increasing prevalence of air conditioning equipment, its operational stability has become a major concern. However, during operation, the suction sensor in existing air conditioning systems is prone to malfunctions such as detachment. When the suction sensor malfunctions, the air conditioning unit typically needs to shut down and report an error. The suction sensor plays many roles: for example, it calculates superheat during operation (suction superheat is Ts-Tc during cooling and Ts-Te during heating), ensuring a certain superheat for the refrigerant returning to the compressor to prevent liquid compression; and the opening and closing of the electronic expansion valve is also regulated by the suction superheat value and the target suction superheat value. Once the suction sensor malfunctions, a series of problems can easily occur: if the suction superheat is too low, liquid compression will occur, damaging the compressor and shortening the unit's lifespan; if the suction superheat is too high, the electronic expansion valve will malfunction, resulting in insufficient cooling and heating capacity. Typically, when the suction sensor detaches, the system will alarm and shut down to prevent damage to the unit. Therefore, designing a more effective solution for detecting and replacing abnormal intake sensors to avoid impacting users' daily use has become an urgent problem to be solved. Summary of the Invention

[0003] Therefore, the present invention provides a method and apparatus for handling abnormal air intake sensors in air conditioners, in order to solve the shortcomings of existing air intake sensor abnormality handling schemes, which are relatively simple and can only stop the machine and report errors, resulting in poor reliability of air conditioning equipment operation.

[0004] In a first aspect, the present invention provides a method for handling an abnormal air conditioner intake sensor, comprising: upon determining that the air conditioner intake sensor is abnormal, acquiring the current indoor ambient temperature and the actual frequency of the compressor; determining a preset value for the target intake superheat of the air conditioner based on the indoor ambient temperature, the actual frequency of the compressor, and a preset correspondence; determining a corresponding air conditioner compressor frequency coefficient based on the actual frequency of the compressor; determining a corresponding ambient temperature coefficient based on the temperature detected by the air conditioner ambient temperature sensor; and determining a corresponding air conditioner fan coefficient based on the air conditioner fan speed.

[0005] The correspondence is the relationship between the indoor ambient temperature range, compressor frequency range, and preset value of suction superheat for the air conditioner.

[0006] Based on the air conditioner compressor frequency coefficient, the ambient temperature coefficient, the air conditioner fan coefficient, the target intake superheat preset value, and the detected temperature of the air conditioner coil sensor, the temperature value of the air conditioner compressor intake sensor is determined; the temperature value of the intake sensor is used as the actual intake temperature of the air conditioner compressor.

[0007] Furthermore, based on the air conditioner compressor frequency coefficient, the ambient temperature coefficient, the air conditioner fan coefficient, the target suction superheat preset value, and the detected temperature of the air conditioner coil sensor, the temperature value of the air conditioner compressor suction sensor is determined, specifically including:

[0008] The frequency coefficient of the air conditioner compressor, the ambient temperature coefficient, the air conditioner fan coefficient, the preset value of the target intake superheat, and the detected temperature of the air conditioner coil sensor are input into a preset temperature value calculation model to perform an inverse operation of intake superheat, thereby obtaining the temperature substitute value of the intake sensor of the air conditioner compressor, and the temperature substitute value is determined as the temperature value of the intake sensor of the air conditioner compressor.

[0009] Furthermore, based on the indoor ambient temperature, the actual frequency of the compressor, and the preset correspondence, the target intake superheat preset value corresponding to the air conditioner is determined, including: using the indoor ambient temperature and the actual frequency of the compressor as index information, matching and searching with the indoor ambient temperature range and compressor frequency range in the correspondence, returning the matched intake superheat preset value, and determining the intake superheat preset value as the target intake superheat preset value.

[0010] Furthermore, before obtaining the current indoor ambient temperature and actual compressor frequency of the air conditioner, it also includes: determining whether the air conditioner's air intake sensor is abnormal;

[0011] The determination of whether the air conditioner intake sensor is abnormal specifically includes:

[0012] In air conditioning cooling mode, the system acquires the detection temperature of the intake sensor and the outdoor ambient temperature; it determines the difference between the detection temperature of the intake sensor and the outdoor ambient temperature. If the difference is less than or equal to a preset first deviation value, and the current intake superheat is within the preset first superheat temperature range for air conditioning cooling, then the air conditioning intake sensor is determined to be abnormal. Alternatively, in air conditioning heating mode, if the difference is less than or equal to a preset second deviation value, and the current intake superheat is within the preset second superheat temperature range for air conditioning heating, then the air conditioning intake sensor is determined to be abnormal.

[0013] Furthermore, before obtaining the current indoor ambient temperature and the actual compressor frequency, the following steps are also included:

[0014] The system obtains the user-inputted indoor ambient temperature range, compressor frequency range, and preset value of suction superheat for the air conditioner in advance.

[0015] Based on the indoor ambient temperature range, the compressor frequency range, and the preset value of suction superheat, a correspondence between the indoor ambient temperature range, the compressor frequency range, and the preset value of suction superheat is constructed according to actual historical operating data.

[0016] Secondly, the present invention also provides a processing device for an abnormal air conditioner intake sensor, comprising: a data determination unit, configured to, upon determining that the air conditioner intake sensor is abnormal, acquire the current indoor ambient temperature and the actual frequency of the compressor; determine a preset value for the target intake superheat of the air conditioner based on the indoor ambient temperature, the actual frequency of the compressor, and a preset correspondence; determine a corresponding air conditioner compressor frequency coefficient based on the actual frequency of the compressor; determine a corresponding ambient temperature coefficient based on the temperature detected by the air conditioner ambient temperature sensor; and determine a corresponding air conditioner fan coefficient based on the air conditioner fan speed.

[0017] The correspondence is the relationship between the indoor ambient temperature range, compressor frequency range, and preset value of suction superheat for the air conditioner.

[0018] An anomaly handling unit is used to determine the temperature value of the air intake sensor of the air conditioner compressor based on the frequency coefficient of the air conditioner compressor, the ambient temperature coefficient, the air conditioner fan coefficient, the preset value of the target intake superheat, and the detected temperature of the air conditioner coil sensor; and to use the temperature value of the intake sensor as the actual intake temperature of the air conditioner compressor.

[0019] Furthermore, the exception handling unit is specifically used for:

[0020] The frequency coefficient of the air conditioner compressor, the ambient temperature coefficient, the air conditioner fan coefficient, the preset value of the target intake superheat, and the detected temperature of the air conditioner coil sensor are input into a preset temperature value calculation model to perform an inverse operation of intake superheat, thereby obtaining the temperature substitute value of the intake sensor of the air conditioner compressor, and the temperature substitute value is determined as the temperature value of the intake sensor of the air conditioner compressor.

[0021] Furthermore, before obtaining the current indoor ambient temperature and actual compressor frequency, the system also includes an anomaly detection unit to determine whether the air conditioner's intake sensor is malfunctioning; the anomaly detection unit is specifically used for:

[0022] In air conditioning cooling mode, the system acquires the detection temperature of the intake sensor and the outdoor ambient temperature; it determines the difference between the detection temperature of the intake sensor and the outdoor ambient temperature. If the difference is less than or equal to a preset first deviation value, and the current intake superheat is within the preset first superheat temperature range for air conditioning cooling, then the air conditioning intake sensor is determined to be abnormal. Alternatively, in air conditioning heating mode, if the difference is less than or equal to a preset second deviation value, and the current intake superheat is within the preset second superheat temperature range for air conditioning heating, then the air conditioning intake sensor is determined to be abnormal.

[0023] Furthermore, the data determination unit is specifically used to: use the indoor ambient temperature and the actual frequency of the compressor as index information, match and search with the indoor ambient temperature range and compressor frequency range in the corresponding relationship respectively, return the matched and searched intake superheat preset value, and determine the intake superheat preset value as the target intake superheat preset value.

[0024] Furthermore, before obtaining the current indoor ambient temperature and the actual compressor frequency, the following steps are also included:

[0025] The relational data acquisition unit is used to acquire in advance the indoor ambient temperature range, compressor frequency range and its preset suction superheat value of the air conditioner input by the user;

[0026] The correspondence construction unit is used to construct the correspondence between the indoor ambient temperature range, the compressor frequency range, and the preset value of suction superheat based on the indoor ambient temperature range, the compressor frequency range, and the preset value of suction superheat according to actual historical operating data.

[0027] 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 intake sensor abnormality handling method as described in any of the above claims.

[0028] 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 method for handling an abnormal air intake sensor as described in any of the preceding claims.

[0029] The present invention provides a method for handling air conditioner intake sensor malfunctions. When an air conditioner intake sensor malfunction is determined, the method acquires the current indoor ambient temperature and the actual compressor frequency. Based on the indoor ambient temperature, the actual compressor frequency, and a preset correspondence, a preset target intake superheat value for the air conditioner is determined. Then, based on the air conditioner compressor frequency coefficient, ambient temperature coefficient, air conditioner fan coefficient, the preset target intake superheat value, and the detection temperature of the air conditioner coil sensor, the temperature value of the air conditioner compressor intake sensor is determined, and this temperature value is used as the actual intake temperature of the air conditioner compressor. This method effectively solves the defect of abnormal air conditioner operation caused by the detachment of the air conditioner intake sensor, ensuring that the actual intake temperature of the air conditioner compressor can still be detected even when the air conditioner intake sensor is detached, thus improving the reliability of the air conditioner operation. Attached Figure Description

[0030] 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.

[0031] Figure 1 This is a flowchart illustrating the method for handling abnormal air intake sensors provided in an embodiment of the present invention.

[0032] Figure 2 This is a schematic diagram of the structure of the air conditioner intake sensor malfunction processing device provided in an embodiment of the present invention;

[0033] 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

[0034] 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.

[0035] 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.

[0036] The following describes in detail the embodiments based on the air conditioner intake sensor malfunction handling method described in this invention. Figure 1 As shown, this is a flowchart illustrating a method for handling an malfunction of an air conditioner intake sensor according to an embodiment of the present invention. The air conditioner is equipped with a processor; the processor is used to execute the following method:

[0037] Step 101: If the air conditioner intake sensor is found to be malfunctioning, obtain the current indoor ambient temperature and the actual compressor frequency; based on the indoor ambient temperature, the actual compressor frequency, and a preset correspondence, determine the current target intake superheat preset value for the air conditioner; determine the corresponding air conditioner compressor frequency coefficient based on the actual compressor frequency; determine the corresponding ambient temperature coefficient based on the temperature detected by the air conditioner ambient temperature sensor; and determine the corresponding air conditioner fan coefficient based on the air conditioner fan speed. The correspondence refers to the relationship between the corresponding indoor ambient temperature range, the compressor frequency range, and the intake superheat preset value.

[0038] The air conditioner intake sensor malfunction can refer to a fault such as the air conditioner intake sensor falling off. If the air conditioner intake sensor is determined to be malfunctioning, the current indoor ambient temperature corresponding to the air conditioner can be obtained through an indoor temperature sensor, and the actual frequency of the detected air conditioner compressor can be obtained. Then, the indoor ambient temperature and the actual compressor frequency are used as index information to perform a matching search with the indoor ambient temperature range and compressor frequency range in the corresponding relationship, respectively, and the matched and retrieved intake superheat preset value is returned. This intake superheat preset value is determined as the target intake superheat preset value.

[0039] The specific implementation process of determining the corresponding air conditioner compressor frequency coefficient based on the actual compressor frequency includes: obtaining the current actual compressor frequency of the air conditioner; comparing the actual compressor frequency with a preset compressor frequency value to obtain a first comparison result; and determining the corresponding air conditioner compressor frequency coefficient (i.e., compressor frequency coefficient) based on the first comparison result. The first comparison result can be 0 < f ≦ f1, f1 < f ≦ f2, f2 < f ≦ f3, or f3 < f. The air conditioner compressor frequency coefficient can be 1.01, 1, 0.99, or 0.98 when the air conditioner is cooling; and 0.98, 0.99, 1, or 1.01 when the air conditioner is heating. No specific limitation is made here.

[0040] The determination of the corresponding ambient temperature coefficient based on the detected temperature of the air conditioning ambient temperature sensor includes the following specific implementation process: In air conditioning cooling mode, acquiring the first actual detected temperature of the indoor ambient temperature sensor; comparing the first actual detected temperature with a preset value of the indoor ambient temperature sensor to obtain a second comparison result; determining the corresponding indoor ambient temperature coefficient based on the second comparison result; or, in air conditioning heating mode, acquiring the second actual detected temperature of the outdoor ambient temperature sensor; comparing the second actual detected temperature with a preset value of the outdoor ambient temperature sensor to obtain a third comparison result; determining the corresponding outdoor ambient temperature coefficient based on the third comparison result. The second comparison result can be 0 < Tai ≦ Tai1, Tai1 < Tai ≦ Tai2, Tai2 < Tai ≦ Tai3, Tai3 < Tai; correspondingly, the indoor ambient temperature coefficient can be 0.05, 0.1, 0.2, or 0.3 when the air conditioning is cooling, without specific limitation. The third comparison result can refer to 0 < Tao≦Tao1, Tao1 < Tao≦Tao2, Tao2 < Tao≦Tao3, or Tao3 < Tao. Correspondingly, the outdoor ambient temperature coefficient can refer to b when the air conditioner is heating.

[0041] The air conditioner fan coefficient is determined based on the air conditioner fan speed. The specific implementation process includes: in cooling mode, obtaining the indoor air conditioner fan speed; determining whether the indoor air conditioner fan speed is within a first preset speed range; if so, determining the current indoor air conditioner fan coefficient; or, in heating mode, obtaining the outdoor air conditioner fan speed; determining whether the outdoor air conditioner fan speed is within a second preset speed range; if so, determining the current outdoor air conditioner fan coefficient. The first preset speed range can refer to the preset speed range corresponding to low, medium, and high indoor fan speeds. The second preset speed range can refer to the preset speed range corresponding to low, medium, and high outdoor fan speeds.

[0042] It should be noted that before obtaining the current indoor ambient temperature and the actual compressor frequency, the process also includes: determining whether the air conditioner's intake sensor is malfunctioning. Specifically, in cooling mode, the intake sensor's detected temperature and the outdoor ambient temperature are obtained; the difference between the intake sensor's detected temperature and the outdoor ambient temperature is determined. If the difference is less than or equal to a preset first deviation value, and the current intake superheat is within the preset first superheat temperature range for air conditioning cooling, then the air conditioner's intake sensor is determined to be malfunctioning. Alternatively, in heating mode, if the difference is less than or equal to a preset second deviation value, and the current intake superheat is within the preset second superheat temperature range for air conditioning heating, then the air conditioner's intake sensor is determined to be malfunctioning.

[0043] In addition, before obtaining the current indoor ambient temperature and actual compressor frequency of the air conditioner, the process includes: pre-obtaining the indoor ambient temperature range, compressor frequency range and its preset suction superheat value of the air conditioner input by the user; based on the indoor ambient temperature range, the compressor frequency range and the preset suction superheat value, constructing the correspondence between the indoor ambient temperature range, the compressor frequency range and the preset suction superheat value according to the actual historical operating data, specifically forming the two relationship tables as described below.

[0044] Step 102: Based on the air conditioner compressor frequency coefficient, the ambient temperature coefficient, the air conditioner fan coefficient, the target suction superheat preset value, and the detection temperature of the air conditioner coil sensor, determine the temperature value of the air conditioner compressor suction sensor; use the temperature value of the suction sensor as the actual suction temperature of the air conditioner compressor.

[0045] Specifically, the frequency coefficient of the air conditioner compressor, the ambient temperature coefficient, the air conditioner fan coefficient, the preset value of the target suction superheat, and the detected temperature of the air conditioner coil sensor can be input into a preset temperature value calculation model to perform an inverse operation of the suction superheat, thereby obtaining a temperature substitution value of the air conditioner compressor's suction sensor. This temperature substitution value is then determined as the temperature value of the air conditioner compressor's suction sensor. The temperature value calculation model can be, during air conditioning cooling, using the relevant calculation of the indoor coil sensor Tc plus the preset suction superheat value A, i.e., [x*(Tc+y)+z]+A; or, during air conditioning heating, using the relevant calculation of the outdoor coil sensor Te plus the preset suction superheat value B, i.e., [a*(Te+b)+c]+B.

[0046] Where Tc is the indoor coil sensor temperature; T1 and T2 are the preset superheat range temperatures during cooling, T1 < T2; Te is the outdoor coil sensor temperature; T3 and T4 are the preset superheat range temperatures during heating, T3 < T4; Ts is the compressor suction temperature; Tai is the indoor ambient temperature; Tai1, Tai2, and Tai3 are the preset indoor ambient temperature sensor temperatures, Tai1 < Tai2 < Tai3; Tao is the outdoor ambient temperature; Tao1, Tao2, and Tao3 are the preset outdoor ambient temperature sensor temperatures, Tao1 < Tao2 < Tao3; △t is the deviation value; Tct is the substitute value for the indoor coil sensor temperature; Tet is the substitute value for the outdoor coil sensor temperature; f is the actual compressor frequency; f1, f2, and f3 are the preset compressor frequency values, f1 < f2 < f3; A is the preset suction superheat value for air conditioning during cooling; B is the preset suction superheat value for air conditioning during heating.

[0047] In a complete embodiment, during air conditioning cooling: (1) Determine whether Ts = Tao ± Δt, where Δt (first deviation value) can be 0-2℃, i.e., compare the intake sensor temperature (i.e., the temperature detected by the intake sensor) with the outdoor ambient temperature. If so, a preliminary judgment is made that the intake sensor has detached. Because when the intake sensor detaches, the temperature it detects is approximately the same as the outdoor ambient temperature. Δt (first deviation value) is the deviation between the temperature Ts when the intake sensor detaches and the outdoor ambient temperature Tao, including the deviation value of the sensor itself and the deviation value of the ambient temperature at different locations.

[0048] (2) Determine whether T1 < Ts - Tc < T2 is satisfied. If Ts - Tc is not within this range, it is confirmed that the suction sensor has fallen off. At this time, the alarm is activated and the process proceeds to step (3); otherwise, the system operates normally. When the air conditioner is cooling, Ts - Tc is usually used to represent the suction superheat. In order to ensure that the refrigerant returning to the compressor is in a gaseous state and to prevent liquid compression, the air conditioning unit has a certain suction superheat, and the suction superheat is within a certain range. Therefore, when Ts - Tc is not within the range of (T1, T2), it can be further confirmed that the suction sensor has fallen off. (Here, T1 can be 0℃ and T2 can be 6℃).

[0049] For example, when the outdoor ambient temperature is 35℃ in summer and the air conditioner is running in cooling mode, the temperature of the suction sensor is about 8-15℃ (depending on the actual frequency of the compressor and the outdoor temperature). When the suction sensor falls off, Ts is approximately equal to Tai = 35℃. Further calculation shows that Ts-Tc = (35℃-15℃~35℃-8℃) = (20℃~27℃), which is not within the range of (T1, T2) and is much greater than T2. ​​Therefore, we can use whether the suction superheat Ts-Tc is within the range of T1 and T2 to determine whether the suction sensor has fallen off during cooling.

[0050] (3) Retrieve the preset value of intake superheat A: The preset values ​​of intake superheat are different for different indoor ambient temperatures Tai and different compressor actual frequencies f. The preset correspondence shown in the table below can be matched and retrieved, and the matched intake superheat preset value is returned and the process proceeds to step (4).

[0051] 0<Tai≦Tai1 0<f≦f1 A1 f1<f≦f2 A2 f2<f≦f3 A3 f3<f A4 Tai1<Tai≦Tai2 0<f≦f1 A5 f1<f≦f2 A6 f2<f≦f3 A7 f3<f A8 Tai2<Tai≦Tai3 0<f≦f1 A9 f1<f≦f2 A10 f2<f≦f3 A11 f3<f A12 Tai3<Tai 0<f≦f1 A13 f1<f≦f2 A14 f2<f≦f3 A15 f3<f A16

[0052] (4) Since the suction superheat of the air conditioner during cooling operation is within a certain range, when the suction sensor falls off, Ts can be completely replaced by the relevant calculation of Tc. Therefore, this invention introduces the temperature substitution value Tst of the suction sensor of the air conditioner compressor to replace Ts, Tst=[x*(Tc+y)+z]+A. Specifically, 1) x: compressor frequency coefficient: the higher the compressor frequency, the lower the actual indoor coil sensor temperature. When the compressor frequency: 0<f≦f1: x is 1.01; when the compressor frequency: f1<f≦f2: x is 1; when the compressor frequency: f2<f≦f3: x is 0.99; when the compressor frequency: f3<f: x is 0.98. 2) y: indoor ambient temperature coefficient: the higher the indoor ambient temperature, the higher the actual indoor coil sensor temperature. When the indoor ambient temperature sensor temperature is 0 < Tai ≦ Tai1: y is 0.05; when the indoor ambient temperature sensor temperature is Tai1 < Tai ≦ Tai2: y is 0.1; when the indoor ambient temperature sensor temperature is Tai2 < Tai ≦ Tai3: y is 0.2; when the indoor ambient temperature sensor temperature is Tai3 < Tai: y is 0.3. 3) z: Indoor fan coefficient: The higher the indoor fan speed, the lower the actual indoor coil sensor temperature. When the indoor fan speed is low: z = 0.6; when the indoor fan speed is medium: z = 0.4; when the indoor fan speed is high: z = 0.2.

[0053] When the air conditioner is heating: (1) Determine whether Ts = Tao ± Δt, where Δt (the second deviation value) can be 0-3℃. That is, compare the temperature of the suction sensor (i.e., the temperature detected by the suction sensor) with the outdoor ambient temperature. If so, it is preliminarily determined that the indoor coil sensor has fallen off. Because when the suction sensor falls off, the temperature it detects is approximately the same as the outdoor ambient temperature. Δt (the second deviation value) is the deviation between the temperature Ts when the suction sensor falls off and the outdoor ambient temperature Tao, which includes the deviation value of the sensor itself and the deviation value of the ambient temperature at different locations.

[0054] (2) Determine whether T3 < Ts-Te < T4 is satisfied. If Ts-Te is not within this range, it is confirmed that the suction sensor has fallen off. At this time, the alarm is activated and the process proceeds to step (3); otherwise, the process continues normally. When the air conditioner is heating, Ts-Te is usually used to represent the suction superheat. Due to the influence of the external ambient temperature, the suction superheat is often negative during heating, and the suction superheat is within a certain range. Therefore, when Ts-Te is not within the range of (T3, T4), it can be further confirmed that the suction sensor has fallen off. (Here, T3 is -6℃ and T4 is 0℃). For example: When the outdoor ambient temperature is 7℃ in winter, the air conditioner is running in heating mode. At this time, the outdoor coil temperature is about 2-4℃ (depending on the actual frequency of the compressor and the outdoor temperature). When the suction sensor falls off, Ts is approximately equal to Tai = 7℃. Further calculation shows that Ts-Te = (7℃-4℃~7℃-2℃) = (3~5), which is not within the range of (T3, T4). Therefore, whether the intake superheat Ts-Tc is within the range of T3 and T4 can be used to determine whether the intake sensor has fallen off during cooling.

[0055] (3) Retrieve the preset value of intake superheat B: The preset values ​​of intake superheat are different for different indoor ambient temperatures and different actual compressor frequencies f. The preset correspondence shown in the table below can be matched and retrieved, and the matched intake superheat preset value is returned and the process proceeds to step (4).

[0056] 0<Tai≦Tai1 0<f≦f1 B1 f1<f≦f2 B2 f2<f≦f3 B3 f3<f B4 Tai1<Tai≦Tai2 0<f≦f1 B5 f1<f≦f2 B6 f2<f≦f3 B7 f3<f B8 Tai2<Tai≦Tai3 0<f≦f1 B9 f1<f≦f2 B10 f2<f≦f3 B11 f3<f B12 Tai3<Tai 0<f≦f1 B13 f1<f≦f2 B14 f2<f≦f3 B15 f3<f B16

[0057] (4) Since the suction superheat of the air conditioner during heating operation is within a certain range, when the suction sensor falls off, the relevant calculation of Te can completely replace Ts. This invention introduces the temperature substitution value Tst of the suction sensor of the air conditioner compressor to replace Ts, Tst=[a*(Te+b)+c]+B. Specifically, it includes: 1) a: Compressor frequency coefficient: The higher the compressor frequency, the higher the actual outdoor coil sensor temperature. When the compressor frequency: 0<f≦f1: a is 0.98; when the compressor frequency: f1<f≦f2: a is 0.99; when the compressor frequency: f2<f≦f3: a is 1; when the compressor frequency: f3<f: a is 1.01. 2) b: Outdoor ambient temperature coefficient: The higher the outdoor ambient temperature, the higher the actual outdoor coil sensor temperature. When the outdoor ambient temperature sensor temperature is 0 < Tao ≦ Tao1: b is 0.05; when the outdoor ambient temperature sensor temperature is Tao1 < Tao ≦ Tao2: b is 0.1; when the outdoor ambient temperature sensor temperature is Tao2 < Tao ≦ Tao3: b is 0.2; when the outdoor ambient temperature sensor temperature is Tao3 < Tao: b is 0.3. 3) c: Outdoor fan coefficient: The higher the outdoor fan speed, the lower the actual outdoor coil sensor temperature. When the outdoor fan speed is low: c = 0.6; when the outdoor fan speed is medium: c = 0.4; when the outdoor fan speed is high: c = 0.2.

[0058] This invention utilizes a method for detecting whether a suction sensor has detached by detecting suction superheat to accurately determine the probability of a malfunction. It also uses the inverse calculation of suction superheat during cooling and heating to replace the temperature value of the suction sensor, thus ensuring normal operation of the air conditioning unit and preventing damage. Specifically, during cooling, the suction temperature is replaced by the relevant calculation of the indoor coil sensor Tc plus a preset suction superheat value A, i.e., [x*(Tc+y)+z]+A; during heating, the suction temperature is replaced by the relevant calculation of the outdoor coil sensor Te plus a preset suction superheat value B, i.e., [a*(Te+b)+c]+B.

[0059] The air conditioner intake sensor malfunction handling method described in this invention, upon determining that the air conditioner intake sensor is malfunctioning, acquires the current indoor ambient temperature and the actual compressor frequency, and determines a preset target intake superheat value based on the indoor ambient temperature, the actual compressor frequency, and a preset correspondence. Then, based on the air conditioner compressor frequency coefficient, ambient temperature coefficient, air conditioner fan coefficient, the preset target intake superheat value, and the detection temperature of the air conditioner coil sensor, determines the temperature value of the air conditioner compressor intake sensor, and uses this temperature value as the actual intake temperature of the air conditioner compressor. This method effectively solves the defect of abnormal air conditioner operation caused by the detachment of the air conditioner intake sensor, ensuring that the actual intake temperature of the air conditioner compressor can still be detected even when the air conditioner intake sensor is detached, thereby improving the reliability of the air conditioner operation.

[0060] Corresponding to the above-described method for handling air conditioner intake sensor malfunctions, this invention also provides a device for handling air conditioner intake sensor malfunctions. Since the embodiments of this device are similar to the above-described method embodiments, the description is relatively simple. For relevant details, please refer to the description in the above-described method embodiment section. The embodiments of the air conditioner intake sensor malfunction handling device described below are merely illustrative. Please refer to... Figure 2 As shown, it is a structural schematic diagram of a device for handling abnormal air intake sensors provided in an embodiment of the present invention.

[0061] The air conditioner intake sensor malfunction handling device of the present invention specifically includes the following parts:

[0062] The data determination unit 201 is used to, when it is determined that the air conditioner intake sensor is abnormal, acquire the current indoor ambient temperature and the actual frequency of the compressor; determine the target intake superheat preset value of the air conditioner based on the indoor ambient temperature, the actual frequency of the compressor and a preset correspondence; determine the corresponding air conditioner compressor frequency coefficient based on the actual frequency of the compressor; determine the corresponding ambient temperature coefficient based on the temperature detected by the air conditioner ambient temperature sensor; and determine the corresponding air conditioner fan coefficient based on the air conditioner fan speed.

[0063] The correspondence is the relationship between the indoor ambient temperature range, compressor frequency range, and preset value of suction superheat for the air conditioner.

[0064] The anomaly handling unit 202 is used to determine the temperature value of the air intake sensor of the air conditioner compressor based on the frequency coefficient of the air conditioner compressor, the ambient temperature coefficient, the air conditioner fan coefficient, the preset value of the target intake superheat, and the detected temperature of the air conditioner coil sensor; and to use the temperature value of the intake sensor as the actual intake temperature of the air conditioner compressor.

[0065] Furthermore, the exception handling unit is specifically used for:

[0066] The frequency coefficient of the air conditioner compressor, the ambient temperature coefficient, the air conditioner fan coefficient, the preset value of the target intake superheat, and the detected temperature of the air conditioner coil sensor are input into a preset temperature value calculation model to perform an inverse operation of intake superheat, thereby obtaining the temperature substitute value of the intake sensor of the air conditioner compressor, and the temperature substitute value is determined as the temperature value of the intake sensor of the air conditioner compressor.

[0067] Furthermore, before obtaining the current indoor ambient temperature and actual compressor frequency, the system also includes an anomaly detection unit to determine whether the air conditioner's intake sensor is malfunctioning; the anomaly detection unit is specifically used for:

[0068] In air conditioning cooling mode, the system acquires the detection temperature of the intake sensor and the outdoor ambient temperature; it determines the difference between the detection temperature of the intake sensor and the outdoor ambient temperature. If the difference is less than or equal to a preset first deviation value, and the current intake superheat is within the preset first superheat temperature range for air conditioning cooling, then the air conditioning intake sensor is determined to be abnormal. Alternatively, in air conditioning heating mode, if the difference is less than or equal to a preset second deviation value, and the current intake superheat is within the preset second superheat temperature range for air conditioning heating, then the air conditioning intake sensor is determined to be abnormal.

[0069] Furthermore, the data determination unit is specifically used to: use the indoor ambient temperature and the actual frequency of the compressor as index information, match and search with the indoor ambient temperature range and compressor frequency range in the corresponding relationship respectively, return the matched and searched intake superheat preset value, and determine the intake superheat preset value as the target intake superheat preset value.

[0070] Furthermore, before obtaining the current indoor ambient temperature and the actual compressor frequency, the following steps are also included:

[0071] The relational data acquisition unit is used to acquire in advance the indoor ambient temperature range, compressor frequency range and its preset suction superheat value of the air conditioner input by the user;

[0072] The correspondence construction unit is used to construct the correspondence between the indoor ambient temperature range, the compressor frequency range, and the preset value of suction superheat based on the indoor ambient temperature range, the compressor frequency range, and the preset value of suction superheat according to actual historical operating data.

[0073] The air conditioner intake sensor malfunction processing device described in this embodiment of the invention, upon determining that the air conditioner intake sensor is malfunctioning, acquires the current indoor ambient temperature and the actual frequency of the compressor, and determines a preset target intake superheat value for the air conditioner based on the indoor ambient temperature, the actual compressor frequency, and a preset correspondence. Then, based on the air conditioner compressor frequency coefficient, ambient temperature coefficient, air conditioner fan coefficient, the preset target intake superheat value, and the detected temperature of the air conditioner coil sensor, the temperature value of the air conditioner compressor intake sensor is determined, and this temperature value is used as the actual intake temperature of the air conditioner compressor. This effectively solves the defect of abnormal air conditioner operation caused by the detachment of the air conditioner intake sensor, ensuring that the actual intake temperature of the air conditioner compressor can still be detected even when the air conditioner intake sensor is detached, thereby improving the reliability of the air conditioner operation.

[0074] Corresponding to the above-described method for handling abnormal air intake sensors, this invention also provides an air conditioning device. Since the embodiment of this air conditioning device is similar to the above-described method embodiment, it is described simply. For relevant details, please refer to the description in the above-described method embodiment section. The air conditioning device described below is merely illustrative. Figure 3 The 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 a method for handling air conditioner intake sensor malfunctions. This method includes: upon determining that the air conditioner intake sensor is malfunctioning, acquiring the current indoor ambient temperature and the actual compressor frequency; determining a target intake superheat preset value for the air conditioner based on the indoor ambient temperature, the actual compressor frequency, and a preset correspondence; determining the corresponding air conditioner compressor frequency coefficient based on the actual compressor frequency; determining the corresponding ambient temperature coefficient based on the temperature detected by the air conditioner ambient temperature sensor; and determining the corresponding air conditioner fan coefficient based on the air conditioner fan speed. The correspondence is the relationship between the indoor ambient temperature range, the compressor frequency range, and the intake superheat preset value for the air conditioner; determining the temperature value of the air conditioner compressor intake sensor based on the air conditioner compressor frequency coefficient, the ambient temperature coefficient, the air conditioner fan coefficient, the target intake superheat preset value, and the temperature detected by the air conditioner coil sensor; and using the temperature value of the intake sensor as the actual intake temperature of the air conditioner compressor.

[0075] 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.

[0076] 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 intake sensor abnormality handling method provided in the above-described method embodiments. The method includes: when it is determined that the air conditioner intake sensor is abnormal, acquiring the current indoor ambient temperature and the actual frequency of the compressor; determining a target intake superheat preset value for the air conditioner based on the indoor ambient temperature, the actual frequency of the compressor, and a preset correspondence; determining a corresponding air conditioner compressor frequency coefficient based on the actual frequency of the compressor; determining a corresponding ambient temperature coefficient based on the temperature detected by the air conditioner ambient temperature sensor; determining a corresponding air conditioner fan coefficient based on the air conditioner fan speed; wherein, the correspondence is the relationship between the indoor ambient temperature range, the compressor frequency range, and the intake superheat preset value for the air conditioner; determining the temperature value of the air conditioner compressor intake sensor based on the air conditioner compressor frequency coefficient, the ambient temperature coefficient, the air conditioner fan coefficient, the target intake superheat preset value, and the temperature detected by the air conditioner coil sensor; and using the temperature value of the intake sensor as the actual intake temperature of the air conditioner compressor.

[0077] 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 method for handling air conditioner intake sensor malfunctions provided in the above embodiments. The method includes: upon determining that the air conditioner intake sensor is malfunctioning, acquiring the current indoor ambient temperature and the actual compressor frequency; determining a target intake superheat preset value for the air conditioner based on the indoor ambient temperature, the actual compressor frequency, and a preset correspondence; determining a corresponding air conditioner compressor frequency coefficient based on the actual compressor frequency; determining a corresponding ambient temperature coefficient based on the temperature detected by the air conditioner ambient temperature sensor; determining a corresponding air conditioner fan coefficient based on the air conditioner fan speed; wherein the correspondence is the relationship between the indoor ambient temperature range, the compressor frequency range, and the intake superheat preset value for the air conditioner; determining the temperature value of the air conditioner compressor intake sensor based on the air conditioner compressor frequency coefficient, the ambient temperature coefficient, the air conditioner fan coefficient, the target intake superheat preset value, and the temperature detected by the air conditioner coil sensor; and using the temperature value of the intake sensor as the actual intake temperature of the air conditioner compressor.

[0078] 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)).

[0079] 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.

[0080] 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.

[0081] 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 handling abnormal air intake sensors in air conditioners, characterized in that, include: If the air conditioner's intake sensor is found to be malfunctioning, obtain the current indoor ambient temperature and the actual compressor frequency. Based on the indoor ambient temperature, the actual frequency of the compressor, and the preset correspondence, the target intake superheat preset value corresponding to the air conditioner is determined. The corresponding air conditioner compressor frequency coefficient is determined based on the actual frequency of the compressor; the corresponding ambient temperature coefficient is determined based on the temperature detected by the air conditioner ambient temperature sensor; and the corresponding air conditioner fan coefficient is determined based on the air conditioner fan speed. The correspondence is the relationship between the indoor ambient temperature range, compressor frequency range, and preset value of suction superheat for the air conditioner. Based on the air conditioner compressor frequency coefficient, the ambient temperature coefficient, the air conditioner fan coefficient, the target intake superheat preset value, and the detected temperature of the air conditioner coil sensor, the temperature value of the air conditioner compressor intake sensor is determined; the temperature value of the intake sensor is used as the actual intake temperature of the air conditioner compressor.

2. The method for handling abnormal air conditioner intake sensor according to claim 1, characterized in that, Based on the air conditioner compressor frequency coefficient, the ambient temperature coefficient, the air conditioner fan coefficient, the target suction superheat preset value, and the detected temperature of the air conditioner coil sensor, the temperature value of the air conditioner compressor suction sensor is determined, specifically including: The frequency coefficient of the air conditioner compressor, the ambient temperature coefficient, the air conditioner fan coefficient, the preset value of the target intake superheat, and the detected temperature of the air conditioner coil sensor are input into a preset temperature value calculation model to perform an inverse operation of intake superheat, thereby obtaining the temperature substitute value of the intake sensor of the air conditioner compressor, and the temperature substitute value is determined as the temperature value of the intake sensor of the air conditioner compressor.

3. The method for handling abnormal air conditioner intake sensor according to claim 1, characterized in that, Based on the indoor ambient temperature, the actual frequency of the compressor, and a preset correspondence, the target suction superheat preset value for the current air conditioner is determined, including: Using the indoor ambient temperature and the actual frequency of the compressor as index information, the indoor ambient temperature range and the compressor frequency range in the corresponding relationship are matched and retrieved respectively, and the preset value of the suction superheat is returned. The preset value of the suction superheat is determined as the target suction superheat preset value.

4. The method for handling abnormal air conditioner intake sensor according to claim 1, characterized in that, Before obtaining the current indoor ambient temperature and actual compressor frequency of the air conditioner, the process also includes: determining whether the air conditioner's intake sensor is malfunctioning; The determination of whether the air conditioner intake sensor is abnormal specifically includes: In air conditioning cooling mode, the system acquires the detection temperature of the intake sensor and the outdoor ambient temperature; it determines the difference between the detection temperature of the intake sensor and the outdoor ambient temperature. If the difference is less than or equal to a preset first deviation value, and the current intake superheat is within the preset first superheat temperature range for air conditioning cooling, then the air conditioning intake sensor is determined to be abnormal. Alternatively, in air conditioning heating mode, if the difference is less than or equal to a preset second deviation value, and the current intake superheat is within the preset second superheat temperature range for air conditioning heating, then the air conditioning intake sensor is determined to be abnormal.

5. The method for handling abnormal air conditioner intake sensor according to claim 1, characterized in that, Before obtaining the current indoor ambient temperature and the actual compressor frequency, the following steps are also included: The system obtains the user-inputted indoor ambient temperature range, compressor frequency range, and preset value of suction superheat for the air conditioner in advance. Based on the indoor ambient temperature range, the compressor frequency range, and the preset value of suction superheat, a correspondence between the indoor ambient temperature range, the compressor frequency range, and the preset value of suction superheat is constructed according to actual historical operating data.

6. A device for handling abnormal air intake sensors in air conditioners, characterized in that, include: The data determination unit is used to obtain the current indoor ambient temperature and the actual frequency of the compressor when it is determined that the air conditioner intake sensor is abnormal. Based on the indoor ambient temperature, the actual frequency of the compressor, and the preset correspondence, the target intake superheat preset value corresponding to the air conditioner is determined. The corresponding air conditioner compressor frequency coefficient is determined based on the actual frequency of the compressor; the corresponding ambient temperature coefficient is determined based on the temperature detected by the air conditioner ambient temperature sensor; and the corresponding air conditioner fan coefficient is determined based on the air conditioner fan speed. The correspondence is the relationship between the indoor ambient temperature range, compressor frequency range, and preset value of suction superheat for the air conditioner. An anomaly handling unit is used to determine the temperature value of the air intake sensor of the air conditioner compressor based on the frequency coefficient of the air conditioner compressor, the ambient temperature coefficient, the air conditioner fan coefficient, the preset value of the target intake superheat, and the detected temperature of the air conditioner coil sensor; and to use the temperature value of the intake sensor as the actual intake temperature of the air conditioner compressor.

7. The air conditioner intake sensor malfunction handling device according to claim 6, characterized in that, The exception handling unit is specifically used for: The frequency coefficient of the air conditioner compressor, the ambient temperature coefficient, the air conditioner fan coefficient, the preset value of the target intake superheat, and the detected temperature of the air conditioner coil sensor are input into a preset temperature value calculation model to perform an inverse operation of intake superheat, thereby obtaining the temperature substitute value of the intake sensor of the air conditioner compressor, and the temperature substitute value is determined as the temperature value of the intake sensor of the air conditioner compressor.

8. The air conditioner intake sensor malfunction handling device according to claim 6, characterized in that, Before obtaining the current indoor ambient temperature and actual compressor frequency of the air conditioner, it also includes: an anomaly judgment unit, used to determine whether the air conditioner intake sensor is abnormal; The anomaly detection unit is specifically used for: In air conditioning cooling mode, the system acquires the detection temperature of the intake sensor and the outdoor ambient temperature; it determines the difference between the detection temperature of the intake sensor and the outdoor ambient temperature. If the difference is less than or equal to a preset first deviation value, and the current intake superheat is within the preset first superheat temperature range for air conditioning cooling, then the air conditioning intake sensor is determined to be abnormal. Alternatively, in air conditioning heating mode, if the difference is less than or equal to a preset second deviation value, and the current intake superheat is within the preset second superheat temperature range for air conditioning heating, then the air conditioning intake sensor is determined to be abnormal.

9. 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 conditioner intake sensor malfunction handling method as described in any one of claims 1 to 5.

10. 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 method for handling abnormal air conditioning intake sensor as described in any one of claims 1 to 5.

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