Air conditioning control methods, devices, air conditioners and storage media

Abstract

This application provides an air conditioning control method, apparatus, air conditioner, and storage medium. The air conditioning control method includes: responding to a low-temperature control request for a target air conditioner; detecting the external pipe temperature sensor of the target air conditioner to determine its sensor status; if the sensor status is a sensor failure state, determining a phase current correction protection value for the target air conditioner based on the exhaust temperature, AC current value, and a preset phase current protection strategy; adjusting the air conditioning operation state of the target air conditioner based on the current phase current and the phase current correction protection value to obtain the air conditioning control result. This method enables timely phase current protection for the target air conditioner in low-temperature cooling mode when the external pipe temperature sensor fails, utilizing the phase current correction protection value and the current phase current, and effectively controlling the start / stop state of the external fan of the target air conditioner, thereby improving the system reliability of the air conditioner during low-temperature cooling operation.

Description

Technical Field

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

[0002] Currently, with the rapid development of air conditioning technology, air conditioners capable of low-temperature cooling have emerged. The low-temperature cooling function of air conditioners is designed to meet the cooling load requirements of spaces with high indoor heat sources, those requiring preservation or refrigeration, and where direct heat exchange between indoors and outdoors is not advisable, under low outdoor climate conditions. However, some air conditioner models have small compressor displacements and relatively high refrigerant charges, leading to poor oil and liquid return efficiency during low-load operation, insufficient superheat at the compressor bottom, and decreased operational reliability. Therefore, intermittent starting and stopping of the outdoor fan is necessary to address the insufficient superheat at the compressor bottom during low-load cooling. However, when the outdoor pipe temperature sensor malfunctions or becomes loose, the increase in outdoor pipe temperature cannot be detected after the fan stops, making proper control of the air conditioner impossible. This results in a continuous increase in system pressure and outdoor pipe temperature, seriously jeopardizing the reliability of system operation. Summary of the Invention

[0003] This application provides an air conditioning control method, device, air conditioner, and storage medium, aiming to solve the technical problem in the prior art that the air conditioner cannot be properly controlled after the external pipe temperature sensing bulb of the air conditioner fails.

[0004] On one hand, embodiments of this application provide an air conditioning control method, which includes the following steps:

[0005] In response to a low-temperature control request for a target air conditioner, the external pipe temperature sensor of the target air conditioner is detected to determine the sensor status of the external pipe temperature sensor.

[0006] If the temperature sensor is in a faulty state, then the phase current correction protection value of the target air conditioner is determined based on the exhaust temperature, AC current value and preset phase current protection strategy of the target air conditioner.

[0007] The air conditioning operation status of the target air conditioner is adjusted according to the current phase current of the target air conditioner and the phase current correction protection value to obtain the air conditioning control result.

[0008] In one possible implementation of this application, determining the phase current correction protection value of the target air conditioner based on the exhaust temperature, AC current value, and preset phase current protection strategy of the target air conditioner includes:

[0009] Obtain the exhaust temperature of the target air conditioner and the AC current value of the target air conditioner;

[0010] The target exhaust temperature protection value is determined based on the exhaust temperature and the exhaust frequency reduction protection value in the preset phase current protection strategy.

[0011] The target AC protection value is determined based on the AC current value and the AC frequency reduction protection value in the preset phase current protection strategy.

[0012] The phase current correction protection value of the target air conditioner is determined based on the target exhaust temperature protection value and the target AC current protection value.

[0013] In one possible implementation of this application, determining the target exhaust temperature protection value based on the exhaust temperature and the exhaust frequency reduction protection value in the preset phase current protection strategy includes:

[0014] The exhaust protection coefficient is determined based on the exhaust temperature and the exhaust frequency reduction protection value in the preset phase current protection strategy.

[0015] The exhaust frequency reduction protection value is adjusted according to the exhaust protection coefficient to obtain the target exhaust temperature protection value.

[0016] In one possible implementation of this application, determining the target AC protection value based on the AC current value and the AC frequency reduction protection value in the preset phase current protection strategy includes:

[0017] The ratio between the AC current value and the AC frequency reduction protection value in the preset phase current protection strategy is calculated to obtain the AC protection coefficient;

[0018] The target AC protection value is determined based on the AC protection coefficient and the AC frequency reduction protection value.

[0019] In one possible implementation of this application, determining the phase current correction protection value of the target air conditioner based on the target exhaust temperature protection value and the target AC current protection value includes:

[0020] Obtain the phase current protection value of the target air conditioner in the preset phase current protection strategy;

[0021] Access the preset phase current protection database to obtain the phase current correction coefficient associated with the target exhaust temperature protection value and the target AC protection value;

[0022] The phase current protection value is corrected according to the phase current correction coefficient to obtain the phase current corrected protection value.

[0023] In one possible implementation of this application, adjusting the air conditioning operating state of the target air conditioner based on the current phase current of the target air conditioner and the phase current correction protection value to obtain the air conditioning control result includes:

[0024] Obtain the current phase current of the target air conditioner and the status of the start / stop outdoor fan in the target air conditioner;

[0025] If the current phase current is greater than the phase current correction protection value, and the start / stop status of the outdoor fan is in the off state, then the status of the outdoor fan is corrected according to the preset outdoor fan speed to obtain the air conditioning control result.

[0026] In one possible implementation of this application, before determining the phase current correction protection value of the target air conditioner based on the exhaust temperature, AC current value, and preset phase current protection strategy of the target air conditioner, the method further includes:

[0027] Collect the temperature of the test external coil of the target air conditioner under the target test conditions;

[0028] If the test external coil temperature is greater than or equal to the test external coil frequency reduction protection temperature, then the external fan status of the target air conditioner is switched to the start state, and the test exhaust temperature, test AC current and test phase current of the target air conditioner are read.

[0029] A preset phase current protection strategy is generated based on the test exhaust temperature, the test AC current, and the test phase current.

[0030] On the other hand, this application provides an air conditioning control device, the air conditioning control device comprising:

[0031] The temperature sensing module is configured to respond to a low-temperature control request for a target air conditioner, detect the external pipe temperature sensor of the target air conditioner, and determine the sensor status of the external pipe temperature sensor.

[0032] The correction protection module is configured to determine the phase current correction protection value of the target air conditioner based on the exhaust temperature, AC current value and preset phase current protection strategy if the temperature sensor is in a temperature sensor failure state.

[0033] The air conditioning control module is configured to adjust the air conditioning operation status of the target air conditioner based on the current phase current of the target air conditioner and the phase current correction protection value, so as to obtain the air conditioning control result.

[0034] On the other hand, this application also provides an air conditioner, the air conditioner comprising:

[0035] One or more processors;

[0036] Memory; and

[0037] One or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to implement the steps of the air conditioning control method.

[0038] On the other hand, this application also provides a computer-readable storage medium having a computer program stored thereon, the computer program being loaded by a processor to execute the steps in the air conditioning control method.

[0039] This application responds to a low-temperature control request for a target air conditioner by detecting the external pipe temperature sensor of the target air conditioner to determine its status. If the sensor is in a failed state, a phase current correction protection value is determined based on the exhaust temperature, AC current value, and a preset phase current protection strategy of the target air conditioner. The air conditioner's operating state is adjusted according to the current phase current and the phase current correction protection value to obtain the air conditioning control result. This achieves the following: when the external pipe temperature sensor malfunctions or becomes loose in a low-temperature cooling state, a phase current correction protection value is determined based on the exhaust temperature and AC current value. Using this phase current correction protection value and the current phase current, timely phase current protection can be provided for the target air conditioner in low-temperature cooling conditions when the external pipe temperature sensor fails. This also effectively controls the start / stop status of the external fan of the target air conditioner, improving the system reliability of the air conditioner during low-temperature cooling operation. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of a scenario for the air conditioning control method according to an embodiment of this application;

[0042] Figure 2 This is a flowchart illustrating one embodiment of the air conditioning control method in this application.

[0043] Figure 3 A flowchart illustrating an embodiment of the air conditioning control method provided in this application for determining a phase current correction protection value;

[0044] Figure 4 A flowchart illustrating an embodiment of the phase current protection strategy generation method in the air conditioning control method provided in this application;

[0045] Figure 5A schematic diagram of the structure of one embodiment of the air conditioning control device provided in this application;

[0046] Figure 6 This is a schematic diagram of the structure of one embodiment of the air conditioner provided in this application. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and 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.

[0048] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0049] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0050] Currently, with the rapid development of air conditioning technology, air conditioners capable of low-temperature cooling have emerged. The low-temperature cooling function of air conditioners is designed to meet the cooling load requirements of spaces with high indoor heat sources, those requiring preservation or refrigeration, and where direct heat exchange between indoors and outdoors is not advisable, under low outdoor climate conditions. However, some air conditioner models have small compressor displacements and relatively high refrigerant charges, leading to poor oil and liquid return efficiency during low-load operation, insufficient superheat at the compressor bottom, and decreased operational reliability. Therefore, intermittent starting and stopping of the outdoor fan is necessary to address the insufficient superheat at the compressor bottom during low-load cooling. However, when the outdoor pipe temperature sensor malfunctions or becomes loose, the increase in outdoor pipe temperature cannot be detected after the fan stops, making proper control of the air conditioner impossible. This results in a continuous increase in system pressure and outdoor pipe temperature, seriously jeopardizing the reliability of system operation.

[0051] Based on this, this application proposes an air conditioning control method, apparatus, device, and computer-readable storage medium to solve the technical problem in the prior art that the air conditioner cannot be properly controlled after the external pipe temperature sensing bulb of the air conditioner fails.

[0052] The air conditioning control method in this embodiment of the invention is applied to an air conditioning control device, which is disposed in an air conditioning control equipment. The air conditioning control equipment is provided with one or more processors, a memory, and one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement the air conditioning control method. The air conditioning control equipment may be a smart terminal that is communicatively connected to a target air conditioner to control the target air conditioner, such as a mobile phone, tablet computer, network device, and smart computer. Optionally, the air conditioning control equipment may also be the main control module of the target air conditioner itself.

[0053] like Figure 1 As shown, Figure 1 This is a schematic diagram of a scenario illustrating the air conditioning control method according to an embodiment of this application. The air conditioning control scenario in this embodiment includes an air conditioning control device 100 (which integrates an air conditioning control unit) and a target air conditioner 200. The air conditioning control device 100 has a computer-readable storage medium corresponding to the air conditioning control method running to execute the steps of the air conditioning control method. The target air conditioner 200 is a smart air conditioner that is communicatively connected to the air conditioning control device 100 and can perform corresponding operations according to the operation instructions of the air conditioning control device 100.

[0054] Understandable, Figure 1The air conditioning control device in the air conditioning control method scenario shown, or the device included in the air conditioning control device, does not constitute a limitation on the embodiments of the present invention. That is, the number or type of air conditioning control device included in the air conditioning control method scenario, or the number or type of device included in each device, does not affect the overall implementation of the technical solution in the embodiments of the present invention, and can all be considered as equivalent substitutions or derivatives of the technical solutions claimed in the embodiments of the present invention.

[0055] In this embodiment of the invention, the air conditioning control device 100 is mainly used to: respond to a low-temperature control request for a target air conditioner, detect the external pipe temperature sensor of the target air conditioner, and determine the sensor status of the external pipe temperature sensor;

[0056] If the temperature sensor is in a faulty state, then the phase current correction protection value of the target air conditioner is determined based on the exhaust temperature, AC current value and preset phase current protection strategy of the target air conditioner.

[0057] The air conditioning operation status of the target air conditioner is adjusted according to the current phase current of the target air conditioner and the phase current correction protection value to obtain the air conditioning control result.

[0058] This application provides an air conditioning control method, apparatus, device, and computer-readable storage medium, which will be described in detail below.

[0059] It will be understood by those skilled in the art that Figure 1 The application environment shown is only one application scenario related to the solution of this application and does not constitute a limitation on the application scenario of this application. Other application environments may include more than one application scenario. Figure 1 The number of more or fewer air conditioning control devices shown, or the air conditioning control network connections, for example Figure 1 Only one air conditioning control device is shown in the figure. It can be understood that the scenario of the air conditioning control method may also include one or more air conditioning control devices, which are not limited here. The air conditioning control device 100 may also include a memory for storing air conditioning operation data and other data.

[0060] It should be noted that, Figure 1 The schematic diagram of the air conditioning control method shown is merely an example. The scenarios of the air conditioning control method described in the embodiments of the present invention are intended to more clearly illustrate the technical solutions of the embodiments of the present invention and do not constitute a limitation on the technical solutions provided in the embodiments of the present invention.

[0061] Based on the scenarios described above for air conditioning control methods, various embodiments of the air conditioning control method disclosed in this invention are proposed.

[0062] like Figure 2 As shown, Figure 2This is a flowchart illustrating one embodiment of the air conditioning control method in this application. The air conditioning control method includes the following steps 201 to 203:

[0063] 201. In response to a low-temperature control request for the target air conditioner, detect the external pipe temperature sensor of the target air conditioner and determine the sensor status of the external pipe temperature sensor;

[0064] The air conditioning control method in this embodiment is applied to an air conditioning control device. The type and quantity of the air conditioning control device are not specifically limited; that is, the air conditioning control device can be a smart terminal that communicates with the target air conditioner to control it, such as a mobile phone, tablet computer, network device, or smart computer. Optionally, the air conditioning control device can also be the main control module of the target air conditioner itself. The target air conditioner is a smart air conditioner with low-temperature cooling function and equipped with a start / stop outdoor fan. The low-temperature cooling function refers to the target air conditioner's ability to meet the cooling load requirements of spaces with low outdoor temperatures, large indoor heat sources, or those requiring preservation or refrigeration, where direct heat exchange between indoors and outdoors is not advisable. It is a low-load cooling mode. The start / stop outdoor fan is an outdoor fan capable of intermittently starting and stopping in response to the target air conditioner's cooling control. This start / stop outdoor fan utilizes the lag between the compressor bottom temperature and system high pressure changes in the target air conditioner during low-temperature cooling mode to meet the bottom superheat for a portion of the time, thus solving the problem of insufficient compressor bottom superheat during low-load cooling.

[0065] Specifically, during operation in low-temperature cooling mode, the target air conditioner may experience a malfunction or loosening of the external pipe temperature sensor. This could prevent the air conditioner from detecting changes in external pipe temperature after switching the outdoor fan to off mode, leading to a continuous increase in system pressure and external pipe temperature. This poses a risk of excessive compressor pressure and pipe bursting, severely compromising system reliability. Therefore, during operation in low-temperature cooling mode, the target air conditioner responds to a low-temperature control request. This request involves instructing the air conditioner to monitor the external pipe temperature sensor's status in real time and execute corresponding protective control measures when the sensor's status is abnormal. The triggering method for this low-temperature control request is not specifically limited here. It can be triggered manually by the user, for example, by clicking the low-temperature control button on a remote control device connected to the target air conditioner. Alternatively, the low-temperature control request can be automatically triggered by the target air conditioner, for example, by a pre-installed low-temperature control process that automatically triggers the request during operation.

[0066] Specifically, after receiving a low-temperature control request, the target air conditioner detects the temperature sensor on its external pipe to determine its status. In subsequent steps, this status is used to control the start and stop of the outdoor fan, preventing potential safety hazards such as excessive air conditioning system pressure and external pipe temperature. The external pipe temperature sensor is a sensor component installed on the external coil of the target air conditioner to detect the coil temperature.

[0067] Specifically, during the operation of the target air conditioner, when the exhaust temperature changes, the external pipe temperature sensor of the target air conditioner is detected to obtain the sensor status.

[0068] Optionally, if the exhaust temperature of the target air conditioner is on an upward trend, the target air conditioner reads the current external coil temperature. If the external coil temperature changes accordingly with the exhaust temperature, the target air conditioner determines that the temperature sensing bulb of the external coil is in an effective state, and there is no need to perform protection control on starting and stopping the external fan.

[0069] Optionally, if the exhaust temperature of the target air conditioner is on an upward trend, the target air conditioner reads the current external coil temperature. If the external coil temperature of the external coil temperature sensor remains basically unchanged, that is, the change value of the external coil temperature is less than the preset change threshold, the target air conditioner determines that the temperature sensor status of the external coil temperature sensor is a temperature sensor failure state, and the start and stop of the target air conditioner's external fan needs to be protected.

[0070] 202. If the temperature sensor is in a faulty state, then the phase current correction protection value of the target air conditioner is determined based on the exhaust temperature of the target air conditioner, the AC current value, and the preset phase current protection strategy.

[0071] Specifically, when the target air conditioner determines that the external pipe temperature sensor is in a faulty state, the terminal further determines the phase current protection value of the target air conditioner based on its exhaust temperature, AC current value, and a preset phase current protection strategy. This preset phase current protection strategy is a control strategy that includes corresponding exhaust frequency reduction protection values, AC current frequency reduction protection values, phase current protection values, and corresponding coefficients, and provides operational protection for the target air conditioner based on its phase current.

[0072] Specifically, since the target air conditioner may be a small or medium-sized air conditioner, it is usually difficult to achieve the protection parameters corresponding to the exhaust temperature and AC current value for low-load cooling. Furthermore, adding a pressure detection device to such air conditioners is costly. In addition, during operation when the external coil temperature sensor is loose or malfunctioning, the compressor of the target air conditioner generates significant additional work under high load, and the phase current of the system is significantly affected. Therefore, in this embodiment, when the temperature sensor of the external coil of the target air conditioner is in a faulty state, a phase current protection strategy is used to control the operation of the target air conditioner. This allows for effective phase current protection when the system pressure exceeds the compressor stall pressure due to the failure of the external coil temperature sensor, thereby improving the operational stability of the target air conditioner.

[0073] Specifically, when the target air conditioner determines that the temperature sensor of the external pipe temperature sensor is in a faulty state, it acquires the exhaust temperature and AC current value of the target air conditioner. Based on the exhaust temperature and AC current value, it determines the phase current correction protection value of the target air conditioner. In subsequent steps, it uses the phase current correction protection value to control the external fan of the target air conditioner. This allows the target air conditioner to control the start and stop of the external fan when the external pipe temperature sensor is in a faulty state, thereby quickly reducing the system pressure and external pipe temperature of the target air conditioner.

[0074] Specifically, after obtaining the exhaust temperature and AC current value of the target air conditioner, the terminal also determines the target exhaust temperature protection value based on the exhaust temperature and the exhaust frequency reduction protection value in the preset phase current protection strategy. The exhaust frequency reduction protection value is a threshold parameter for frequency reduction protection of the target air conditioner based on the exhaust temperature.

[0075] Specifically, after obtaining the exhaust temperature of the target air conditioner, the terminal determines the exhaust protection coefficient based on the exhaust temperature and the exhaust frequency reduction protection value. That is, the terminal calculates the exhaust temperature divided by the exhaust frequency reduction protection value to obtain the ratio of the exhaust temperature to the exhaust frequency reduction protection value, and determines the ratio of the exhaust temperature to the exhaust frequency reduction protection value as the exhaust protection coefficient of the target air conditioner.

[0076] Specifically, after obtaining the exhaust protection coefficient, the terminal also uses this coefficient to correct and adjust the exhaust frequency reduction protection value to obtain the target exhaust temperature protection value. That is, the terminal calculates the product between the exhaust protection coefficient and the exhaust frequency reduction protection value to obtain the target exhaust temperature protection value. The target exhaust temperature protection value is the exhaust temperature parameter for which the phase current protection value of the target air conditioner needs to be corrected.

[0077] Specifically, after obtaining the AC current value of the target air conditioner, the terminal determines the target AC protection value based on the AC current value and the AC frequency reduction protection value in the preset phase current protection strategy. The AC frequency reduction protection value is a threshold parameter for frequency reduction protection of the target air conditioner based on the AC current value.

[0078] Specifically, after obtaining the AC current value, the terminal calculates the ratio between the AC current value and the AC frequency reduction protection value in the preset phase current protection strategy. That is, the terminal divides the AC current value by the AC frequency reduction protection value to obtain the AC protection coefficient.

[0079] Specifically, after obtaining the AC protection coefficient, the terminal uses this coefficient to correct and adjust the AC frequency reduction protection value to obtain the target AC protection value. That is, the terminal calculates the product between the AC protection coefficient and the AC frequency reduction protection value to obtain the target AC protection value. The target AC protection value is the AC current parameter for which the phase current protection value of the target air conditioner needs to be corrected.

[0080] Specifically, after obtaining the target exhaust temperature protection value and the target AC current protection value, the terminal also uses the target exhaust temperature protection value and the target AC current protection value to adjust the phase current protection value in the preset phase current protection strategy to obtain the corrected phase current protection value. The corrected phase current protection value is a phase current threshold parameter that is determined based on the real-time exhaust temperature status and AC current value status of the target air conditioner and can protect the target air conditioner from phase current.

[0081] 203. Adjust the air conditioning operation status of the target air conditioner according to the current phase current of the target air conditioner and the phase current correction protection value to obtain the air conditioning control result.

[0082] Specifically, after obtaining the phase current protection value corresponding to the target air conditioner, the terminal also adjusts the air conditioning operation status of the target air conditioner according to the current phase current of the target air conditioner and the phase current correction protection value, and obtains the air conditioning control result.

[0083] Specifically, after determining the phase current protection value, the terminal also obtains the current phase current of the target air conditioner and the status of the start / stop of the outdoor fan of the target air conditioner in real time. Based on the comparison result of the current phase current and the phase current protection value, the terminal adjusts the status of the outdoor fan and other operating parameters of the target air conditioner so that when the temperature sensor of the outdoor pipe fails abnormally and the compressor frequency increases, the air conditioning system pressure and the outdoor pipe temperature can be quickly reduced, thereby reducing the probability of safety accidents.

[0084] Optionally, if the current phase current of the target air conditioner is lower than the phase current protection value, then the current compressor load of the target air conditioner is low, and phase current protection is not performed on the target air conditioner. That is, the original operating logic of the target air conditioner continues to operate, and the air conditioning control result that does not require phase current protection control is output.

[0085] Optionally, if the current phase current of the target air conditioner is greater than or equal to the phase current protection value, and the outdoor fan is in a stopped state, the terminal determines that the compressor load of the target air conditioner is currently high, which may pose a risk of compressor overload and outdoor coil burst. Therefore, the terminal needs to perform phase current protection on the target air conditioner. That is, the terminal switches the outdoor fan to the start state and corrects the outdoor fan state according to the preset outdoor fan speed, so that the start / stop outdoor fan can start quickly and operate at the preset outdoor fan speed. This allows the system pressure and outdoor pipe temperature of the target air conditioner to drop rapidly, thereby reducing the probability of an accident, and outputs the air conditioning control result corresponding to the phase current protection control.

[0086] Optionally, in other embodiments, the target air conditioner can also adjust other operating parameters of the target air conditioner based on the comparison result of the current phase current and the phase current protection value, thereby further improving the operating stability of the target air conditioner.

[0087] In this embodiment, the air conditioning control device, in response to a low-temperature control request for a target air conditioner, detects the external pipe temperature sensor of the target air conditioner to determine its status. If the sensor is in a failed state, a phase current correction protection value for the target air conditioner is determined based on the exhaust temperature, AC current value, and a preset phase current protection strategy. The air conditioning operation state of the target air conditioner is adjusted according to the current phase current and the phase current correction protection value to obtain the air conditioning control result. This achieves the following: when the external pipe temperature sensor malfunctions or becomes loose in a low-temperature cooling state, the phase current correction protection value for the target air conditioner is determined based on the exhaust temperature and AC current value. Using this phase current correction protection value and the current phase current, timely phase current protection can be provided for the target air conditioner in a low-temperature cooling state when the external pipe temperature sensor fails. Furthermore, the start / stop status of the external fan of the target air conditioner is effectively controlled, improving the system reliability of the air conditioner during low-temperature cooling operation.

[0088] like Figure 3 As shown, Figure 3 This is a flowchart illustrating an embodiment of the air conditioning control method for determining the phase current correction protection value provided in this application. Specifically, in this embodiment, the air conditioning control method further includes steps 301 to 303:

[0089] 301. Obtain the phase current protection value of the target air conditioner as described in the preset phase current protection strategy;

[0090] 302. Access the preset phase current protection database to obtain the phase current correction coefficient associated with the target exhaust temperature protection value and the target AC protection value;

[0091] 303. Correct the phase current protection value according to the phase current correction coefficient to obtain the phase current correction protection value.

[0092] Based on the above embodiments, in this embodiment, after the terminal obtains the target exhaust temperature protection value and the target AC current protection value, it also uses the target exhaust temperature protection value and the target AC current protection value to adjust the phase current protection value in the preset phase current protection strategy to obtain the corrected phase current correction protection value. The phase current correction protection value is a phase current threshold parameter that is determined based on the real-time exhaust temperature status and AC current value status of the target air conditioner and can protect the target air conditioner from phase current.

[0093] Specifically, after obtaining the target exhaust temperature protection value and the target AC power protection value, the terminal also obtains the phase current protection value of the target air conditioner in the preset phase current protection strategy. This phase current protection value is the uncorrected phase current protection threshold in the target air conditioner. When performing phase current protection on the target air conditioner, the phase current protection value needs to be corrected according to the real-time operating status of the target air conditioner to obtain the corrected phase current protection value.

[0094] Specifically, the terminal or target air conditioner has a pre-set phase current protection database. This database stores a table showing the mapping relationship between different target exhaust temperatures, target AC protection values, and specified phase current correction coefficients. As shown in Table 1, Table 1 is a data representation table corresponding to one embodiment of the phase current protection database.

[0095]

[0096] Table 1

[0097] Among them, the target exhaust temperature protection value A1 to the target exhaust temperature protection value A4 represent the target exhaust temperature protection values ​​corresponding to different exhaust temperature protection coefficients. Among the target exhaust temperature protection values ​​A1 to A4, the target exhaust temperature protection values ​​gradually increase with the size of the serial number.

[0098] Among them, the target AC protection value B1 to target AC protection value B4 represent the target exhaust temperature protection value corresponding to different exhaust temperature protection coefficients. Among the target AC protection values ​​B1 to target AC protection value B4, the target exhaust temperature protection value gradually increases with the size of the serial number.

[0099] Among them, the phase current correction coefficients X1 to X6 represent phase current correction coefficients of different proportions.

[0100] Specifically, after obtaining the target exhaust temperature protection value and the target AC current protection value, the terminal accesses the phase current protection database and obtains the phase current correction coefficient associated with the target exhaust temperature protection value and the target AC current protection value in the phase current protection database. The phase current correction coefficient is a correction coefficient used to correct the phase current protection value.

[0101] Specifically, after obtaining the phase current correction coefficient, the terminal corrects the phase current protection value according to the phase current correction coefficient to obtain a phase current correction protection value that conforms to the current operating state of the target air conditioner. Then, the terminal adjusts the air conditioning operating state of the target air conditioner according to the current phase current of the target air conditioner and the phase current correction protection value to obtain the air conditioning control result.

[0102] In this embodiment, the air conditioning control device obtains the phase current protection value of the target air conditioner from the preset phase current protection strategy; accesses the preset phase current protection database to obtain the phase current correction coefficient associated with the target exhaust temperature protection value and the target AC current protection value; and corrects the phase current protection value according to the phase current correction coefficient to obtain the phase current correction protection value. This achieves the determination of a phase current correction protection value that conforms to the current operating state of the target air conditioner based on the target exhaust temperature protection value and the target AC current protection value, thereby improving the accuracy of air conditioning control and further enhancing the stability of air conditioning operation.

[0103] like Figure 4 As shown, Figure 4 This is a flowchart illustrating an embodiment of the phase current protection strategy generated in the air conditioning control method provided in this application. Specifically, in this embodiment, the air conditioning control method further includes steps 401 to 403:

[0104] 401. Collect the temperature of the test external coil of the target air conditioner under the target test conditions;

[0105] 402. If the test external coil temperature is greater than or equal to the test external coil frequency reduction protection temperature, then switch the start / stop external fan status of the target air conditioner to the start state, and read the test exhaust temperature, test AC current and test phase current of the target air conditioner.

[0106] 403. Generate a preset phase current protection strategy based on the test exhaust temperature, the test AC current, and the test phase current.

[0107] Based on the above embodiments, in this embodiment, due to significant differences in the configuration and operating systems of different air conditioners, the AC frequency reduction protection value, exhaust temperature frequency reduction protection value, and phase current protection value of different air conditioners will be adjusted as the system changes. Therefore, before performing phase current protection control, the target air conditioner is tested according to the target test conditions to generate a preset phase current protection strategy.

[0108] Specifically, the terminal reads the target test condition, drives the target air conditioner to operate under that condition, and collects the outdoor coil temperature of the target air conditioner under that condition. The preset condition is when the outdoor coil temperature sensor is active, and the target air conditioner operates under low-temperature conditions with the outdoor fan in a stopped state. This low-temperature condition corresponds to the operating state corresponding to the highest operating frequency of the target air conditioner's compressor. In one specific embodiment, this low-temperature condition is -15℃ (unit: degrees Celsius).

[0109] Specifically, after the terminal obtains the test external coil temperature of the target air conditioner, it compares the test external coil temperature with the test external coil frequency reduction protection temperature. If the test external coil temperature is greater than or equal to the test external coil frequency reduction protection temperature, the external fan status of the target air conditioner is switched to the start state, and the test exhaust temperature, test AC current and test phase current of the target air conditioner are read.

[0110] Specifically, the terminal further adjusts the test external fan frequency reduction temperature to switch the external fan status to the start state, and collects the adjusted test exhaust temperature, test AC current, and test phase current of the target air conditioner. Optionally, this adjustment method can be to subtract a corresponding multiple of the test external fan frequency reduction temperature as a temperature difference parameter, and obtain the test exhaust temperature, test AC current, and test phase current of the target air conditioner under the corresponding temperature difference parameter.

[0111] Specifically, after obtaining the test exhaust temperature, test AC current, and test phase current, the terminal also determines the exhaust temperature protection coefficient, exhaust temperature frequency reduction protection value, AC protection coefficient, AC frequency reduction protection value, test phase current protection value, and test phase current protection coefficient of the target air conditioner based on the test exhaust temperature, test AC current, and test phase current, respectively, in order to generate the phase current protection strategy. In subsequent steps, the phase current protection strategy is used to protect the target air conditioner from phase current when the external coil temperature sensor is abnormal.

[0112] In this embodiment, the air conditioning control device collects the test outdoor coil temperature of the target air conditioner under the target test conditions. If the test outdoor coil temperature is greater than or equal to the test outdoor coil frequency reduction protection temperature, the outdoor fan status of the target air conditioner is switched to the start state, and the test exhaust temperature, test AC current, and test phase current of the target air conditioner are read. A preset phase current protection strategy is generated based on the test exhaust temperature, the test AC current, and the test phase current. This achieves the generation of a preset phase current protection strategy based on the operating parameters of the target air conditioner under the corresponding target test conditions, providing data support for subsequent phase current protection and improving the control accuracy of phase current protection.

[0113] To better implement the air conditioning control method in the embodiments of this application, an air conditioning control device is also provided in the embodiments of this application, such as... Figure 5 As shown, Figure 5 This is a schematic diagram of the structure of the air conditioning control device provided in the embodiments of this application. Specifically, the air conditioning control device 500 includes:

[0114] The temperature sensing module 501 is configured to respond to a low-temperature control request for a target air conditioner, detect the external pipe temperature sensor of the target air conditioner, and determine the sensor status of the external pipe temperature sensor.

[0115] The correction protection module 502 is configured to determine the phase current correction protection value of the target air conditioner based on the exhaust temperature, AC current value and preset phase current protection strategy if the temperature sensor is in a temperature sensor failure state.

[0116] The air conditioning control module 503 is configured to adjust the air conditioning operation status of the target air conditioner according to the current phase current of the target air conditioner and the phase current correction protection value, so as to obtain the air conditioning control result.

[0117] In one possible implementation of this application embodiment, the air conditioning control device determines the phase current correction protection value of the target air conditioner based on the exhaust temperature, AC current value, and preset phase current protection strategy of the target air conditioner, including:

[0118] Obtain the exhaust temperature of the target air conditioner and the AC current value of the target air conditioner;

[0119] The target exhaust temperature protection value is determined based on the exhaust temperature and the exhaust frequency reduction protection value in the preset phase current protection strategy.

[0120] The target AC protection value is determined based on the AC current value and the AC frequency reduction protection value in the preset phase current protection strategy.

[0121] The phase current correction protection value of the target air conditioner is determined based on the target exhaust temperature protection value and the target AC current protection value.

[0122] In one possible implementation of this application embodiment, the air conditioning control device determines a target exhaust temperature protection value based on the exhaust temperature and the exhaust frequency reduction protection value in a preset phase current protection strategy, including:

[0123] The exhaust protection coefficient is determined based on the exhaust temperature and the exhaust frequency reduction protection value in the preset phase current protection strategy.

[0124] The exhaust frequency reduction protection value is adjusted according to the exhaust protection coefficient to obtain the target exhaust temperature protection value.

[0125] In one possible implementation of this application embodiment, the air conditioning control device determines a target AC protection value based on the AC current value and the AC frequency reduction protection value in the preset phase current protection strategy, including:

[0126] The ratio between the AC current value and the AC frequency reduction protection value in the preset phase current protection strategy is calculated to obtain the AC protection coefficient;

[0127] The target AC protection value is determined based on the AC protection coefficient and the AC frequency reduction protection value.

[0128] In one possible implementation of this application embodiment, the air conditioning control device determines the phase current correction protection value of the target air conditioner based on the target exhaust temperature protection value and the target AC current protection value, including:

[0129] Obtain the phase current protection value of the target air conditioner in the preset phase current protection strategy;

[0130] Access the preset phase current protection database to obtain the phase current correction coefficient associated with the target exhaust temperature protection value and the target AC protection value;

[0131] The phase current protection value is corrected according to the phase current correction coefficient to obtain the phase current corrected protection value.

[0132] In one possible implementation of this application embodiment, the air conditioning control device adjusts the air conditioning operation state of the target air conditioner based on the current phase current of the target air conditioner and the phase current correction protection value, to obtain an air conditioning control result, including:

[0133] Obtain the current phase current of the target air conditioner and the status of the start / stop outdoor fan in the target air conditioner;

[0134] If the current phase current is greater than the phase current correction protection value, and the start / stop status of the outdoor fan is in the off state, then the status of the outdoor fan is corrected according to the preset outdoor fan speed to obtain the air conditioning control result.

[0135] In one possible implementation of this application embodiment, before the air conditioning control device determines the phase current correction protection value of the target air conditioner based on the exhaust temperature, AC current value, and preset phase current protection strategy of the target air conditioner, it further includes:

[0136] Collect the temperature of the test external coil of the target air conditioner under the target test conditions;

[0137] If the test external coil temperature is greater than or equal to the test external coil frequency reduction protection temperature, then the external fan status of the target air conditioner is switched to the start state, and the test exhaust temperature, test AC current and test phase current of the target air conditioner are read.

[0138] A preset phase current protection strategy is generated based on the test exhaust temperature, the test AC current, and the test phase current.

[0139] In this embodiment, the air conditioning control device, in response to a low-temperature control request for a target air conditioner, detects the external pipe temperature sensor of the target air conditioner to determine its status. If the sensor is in a faulty state, a phase current correction protection value is determined based on the exhaust temperature, AC current value, and a preset phase current protection strategy of the target air conditioner. The air conditioning operation state of the target air conditioner is adjusted according to the current phase current and the phase current correction protection value to obtain the air conditioning control result. This achieves the following: when the external pipe temperature sensor malfunctions or becomes loose in a low-temperature cooling state, the phase current correction protection value of the target air conditioner is determined based on the exhaust temperature and AC current value. Using this phase current correction protection value and the current phase current, timely phase current protection can be provided for the target air conditioner in a low-temperature cooling state when the external pipe temperature sensor fails. Furthermore, the start / stop status of the external fan of the target air conditioner is effectively controlled, improving the system reliability of the air conditioner during low-temperature cooling operation.

[0140] This invention also provides an air conditioner, such as... Figure 6 As shown, Figure 6 This is a schematic diagram of an embodiment of the air conditioner provided in this application.

[0141] The air conditioner integrates any one of the air conditioning control devices provided in the embodiments of the present invention, and the air conditioner includes:

[0142] One or more processors;

[0143] Memory; and

[0144] One or more applications, wherein the one or more applications are stored in the memory and configured by the processor to execute the steps of the air conditioning control method in any of the embodiments described above.

[0145] Specifically, an air conditioner may include components such as a processor 601 with one or more processing cores, a memory 602 with one or more computer-readable storage media, a power supply 603, and an input unit 604. Those skilled in the art will understand that... Figure 6 The air conditioner structure shown does not constitute a limitation on the air conditioner and may include more or fewer components than shown, or combine certain components, or have different component arrangements. Wherein:

[0146] The processor 601 is the control center of the air conditioner. It connects to various parts of the air conditioner via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 602, and by calling data stored in the memory 602, it performs various functions and processes data, thereby providing overall monitoring of the air conditioner. Optionally, the processor 601 may include one or more processing cores; preferably, the processor 601 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications, and the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 601.

[0147] The memory 602 can be used to store software programs and modules. The processor 601 executes various functional applications and data processing by running the software programs and modules stored in the memory 602. The memory 602 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, application programs required for at least one function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created based on the use of the air conditioner, etc. In addition, the memory 602 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 602 may also include a memory controller to provide the processor 601 with access to the memory 602.

[0148] The air conditioner also includes a power supply 603 that supplies power to the various components. Preferably, the power supply 603 can be logically connected to the processor 601 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The power supply 603 may also include one or more DC or AC power supplies, a recharging system, a power fault detection circuit, a power converter or inverter, a power status indicator, or any other components.

[0149] The air conditioner may also include an input unit 604, which can be used to receive input digital or character information, and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control.

[0150] Although not shown, the air conditioner may also include a display unit, etc., which will not be described in detail here. Specifically, in this embodiment, the processor 601 in the air conditioner loads the executable files corresponding to the processes of one or more application programs into the memory 602 according to the following instructions, and the processor 601 runs the application programs stored in the memory 602 to realize various functions, as follows:

[0151] In response to a low-temperature control request for a target air conditioner, the external pipe temperature sensor of the target air conditioner is detected to determine the sensor status of the external pipe temperature sensor.

[0152] If the temperature sensor is in a faulty state, then the phase current correction protection value of the target air conditioner is determined based on the exhaust temperature, AC current value and preset phase current protection strategy of the target air conditioner.

[0153] The air conditioning operation status of the target air conditioner is adjusted according to the current phase current of the target air conditioner and the phase current correction protection value to obtain the air conditioning control result.

[0154] Therefore, embodiments of the present invention provide a computer-readable storage medium, which may include: read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk, etc. A computer program is stored thereon, which is loaded by a processor to execute the steps in any of the air conditioning control methods provided in the embodiments of the present invention. For example, the computer program loaded by the processor can execute the following steps:

[0155] In response to a low-temperature control request for a target air conditioner, the external pipe temperature sensor of the target air conditioner is detected to determine the sensor status of the external pipe temperature sensor.

[0156] If the temperature sensor is in a faulty state, then the phase current correction protection value of the target air conditioner is determined based on the exhaust temperature, AC current value and preset phase current protection strategy of the target air conditioner.

[0157] The air conditioning operation status of the target air conditioner is adjusted according to the current phase current of the target air conditioner and the phase current correction protection value to obtain the air conditioning control result.

[0158] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the detailed descriptions of other embodiments above, which will not be repeated here.

[0159] In practice, each of the above units or structures can be implemented as an independent entity or can be arbitrarily combined to be implemented as the same or several entities. For the specific implementation of each of the above units or structures, please refer to the previous method embodiments, which will not be repeated here.

[0160] For details on the implementation of each of the above operations, please refer to the previous examples, which will not be repeated here.

[0161] The above provides a detailed description of an air conditioning control method provided by the embodiments of this application. Specific embodiments have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An air conditioning control method, characterized in that, The air conditioning control method includes: In response to a low-temperature control request for a target air conditioner, the external pipe temperature sensor of the target air conditioner is detected to determine the sensor status of the external pipe temperature sensor. If the temperature sensor is in a faulty state, the phase current correction protection value of the target air conditioner is determined based on the exhaust temperature, AC current value and preset phase current protection strategy of the target air conditioner. The preset phase current protection strategy is a control strategy that includes at least one or more of the corresponding exhaust frequency reduction protection value, AC current frequency reduction protection value, phase current protection value and corresponding coefficient, and performs operation protection on the target air conditioner based on the phase current of the target air conditioner. The air conditioning operation status of the target air conditioner is adjusted according to the current phase current of the target air conditioner and the phase current correction protection value to obtain the air conditioning control result.

2. The air conditioning control method according to claim 1, characterized in that, The phase current correction protection value of the target air conditioner is determined based on the exhaust temperature, AC current value, and preset phase current protection strategy of the target air conditioner, including: Obtain the exhaust temperature of the target air conditioner and the AC current value of the target air conditioner; The target exhaust temperature protection value is determined based on the exhaust temperature and the exhaust frequency reduction protection value in the preset phase current protection strategy. The target AC protection value is determined based on the AC current value and the AC frequency reduction protection value in the preset phase current protection strategy. The phase current correction protection value of the target air conditioner is determined based on the target exhaust temperature protection value and the target AC current protection value.

3. The air conditioning control method according to claim 2, characterized in that, The target exhaust temperature protection value is determined based on the exhaust temperature and the exhaust frequency reduction protection value in the preset phase current protection strategy, including: The exhaust protection coefficient is determined based on the exhaust temperature and the exhaust frequency reduction protection value in the preset phase current protection strategy. The exhaust frequency reduction protection value is adjusted according to the exhaust protection coefficient to obtain the target exhaust temperature protection value.

4. The air conditioning control method according to claim 2, characterized in that, The target AC protection value is determined based on the AC current value and the AC frequency reduction protection value in the preset phase current protection strategy, including: The ratio between the AC current value and the AC frequency reduction protection value in the preset phase current protection strategy is calculated to obtain the AC protection coefficient; The target AC protection value is determined based on the AC protection coefficient and the AC frequency reduction protection value.

5. The air conditioning control method according to claim 2, characterized in that, Determining the phase current correction protection value of the target air conditioner based on the target exhaust temperature protection value and the target AC current protection value includes: Obtain the phase current protection value of the target air conditioner in the preset phase current protection strategy; Access the preset phase current protection database to obtain the phase current correction coefficient associated with the target exhaust temperature protection value and the target AC protection value; The phase current protection value is corrected according to the phase current correction coefficient to obtain the phase current corrected protection value.

6. The air conditioning control method according to claim 1, characterized in that, The air conditioning operation status of the target air conditioner is adjusted according to the current phase current of the target air conditioner and the phase current correction protection value to obtain the air conditioning control result, including: Obtain the current phase current of the target air conditioner and the status of the start / stop outdoor fan in the target air conditioner; If the current phase current is greater than the phase current correction protection value, and the outdoor fan is in a stopped state, the outdoor fan state is corrected according to the preset outdoor fan speed to obtain the air conditioning control result.

7. The air conditioning control method according to any one of claims 1-6, characterized in that, Before determining the phase current correction protection value of the target air conditioner based on its exhaust temperature, AC current value, and preset phase current protection strategy, the method further includes: Collect the temperature of the test external coil of the target air conditioner under the target test conditions; If the test external coil temperature is greater than or equal to the test external coil frequency reduction protection temperature, then the external fan status of the target air conditioner is switched to the start state, and the test exhaust temperature, test AC current and test phase current of the target air conditioner are read. A preset phase current protection strategy is generated based on the test exhaust temperature, the test AC current, and the test phase current.

8. An air conditioning control device, characterized in that, The air conditioning control device includes: The temperature sensing module is configured to respond to a low-temperature control request for a target air conditioner, detect the external pipe temperature sensor of the target air conditioner, and determine the sensor status of the external pipe temperature sensor. The correction protection module is configured to determine the phase current correction protection value of the target air conditioner based on the exhaust temperature, AC current value and preset phase current protection strategy of the target air conditioner if the temperature sensor is in a temperature sensor failure state. The preset phase current protection strategy is a control strategy that includes at least one or more of the corresponding exhaust frequency reduction protection value, AC current frequency reduction protection value, phase current protection value and corresponding coefficients, and performs operation protection on the target air conditioner based on the phase current of the target air conditioner. The air conditioning control module is configured to adjust the air conditioning operation status of the target air conditioner based on the current phase current of the target air conditioner and the phase current correction protection value, so as to obtain the air conditioning control result.

9. An air conditioner, characterized in that, The air conditioner includes: One or more processors; Memory; and One or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to implement the steps of the air conditioning control method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, It stores a computer program, which is loaded by a processor to execute the steps of the air conditioning control method according to any one of claims 1 to 7.

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