Air conditioner outdoor environment temperature detection method and device, air conditioner and medium

Abstract

The application discloses an air conditioner outdoor environment temperature detection method, device, air conditioner and medium, the method comprises the following steps: if an air conditioner starting instruction is received, an initial outdoor unit coil temperature is acquired, and the initial outdoor unit coil temperature is taken as an initial outdoor environment temperature; after the air conditioner runs for a preset time, a thermistor temperature and a running parameter are acquired; and the initial outdoor environment temperature is corrected by a preset correction formula according to the thermistor temperature and the running parameter to determine a current outdoor environment temperature. Through the method of the application, the accurate outdoor environment temperature can be acquired while effectively reducing the production cost.

Description

Technical Field

[0001] This invention relates to the field of air conditioning, and more particularly to a method, apparatus, air conditioner, and medium for detecting the outdoor ambient temperature of an air conditioner. Background Technology

[0002] With the continuous development of industry, air conditioners have become increasingly important in daily life. Air conditioners are equipped with multiple temperature sensors to obtain the ambient temperature of the air conditioner and the indoor and outdoor environments. Among them, the outdoor ambient temperature is particularly important for the operation and regulation of the air conditioner. For example, the operating frequency range of the compressor can be limited by the outdoor ambient temperature. However, setting up multiple temperature sensors results in relatively high production costs. Moreover, since the outdoor ambient temperature sensor is usually located on the outside of the condenser and its position is exposed, the parameters it obtains are easily affected by the condenser and become less accurate. Furthermore, it is prone to aging and failure. Summary of the Invention

[0003] This invention provides a method, device, air conditioner, and medium for detecting outdoor ambient temperature of an air conditioner, aiming to obtain accurate outdoor ambient temperature while effectively reducing production costs.

[0004] In a first aspect, embodiments of the present invention provide a method for detecting the outdoor ambient temperature of an air conditioner, comprising: upon receiving an air conditioner start command, acquiring an initial outdoor unit coil temperature and using the initial outdoor unit coil temperature as the initial outdoor ambient temperature; after the air conditioner has been running for a preset time, acquiring a thermistor temperature and operating parameters; and correcting the initial outdoor ambient temperature according to the thermistor temperature and the operating parameters using a preset correction formula to determine the current outdoor ambient temperature.

[0005] Secondly, embodiments of the present invention also provide an outdoor ambient temperature detection device for an air conditioner, comprising: a first acquisition unit, configured to acquire an initial outdoor unit coil temperature when an air conditioner start command is received, and to use the initial outdoor unit coil temperature as the initial outdoor ambient temperature; a second acquisition unit, configured to acquire a thermistor temperature and operating parameters after the air conditioner has been running for a preset time; and a determination unit, configured to correct the initial outdoor ambient temperature according to the thermistor temperature and the operating parameters using a preset correction formula to determine the current outdoor ambient temperature.

[0006] Thirdly, embodiments of the present invention also provide an air conditioner, which includes a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the above-described method.

[0007] Fourthly, embodiments of the present invention also provide a computer-readable storage medium storing a computer program, the computer program including program instructions that, when executed by a processor, can implement the above-described method.

[0008] This invention provides a method, device, air conditioner, and medium for detecting the outdoor ambient temperature of an air conditioner. The method includes: upon receiving an air conditioner start command, acquiring the initial outdoor unit coil temperature and using it as the initial outdoor ambient temperature; after the air conditioner has run for a preset time, acquiring the thermistor temperature and operating parameters; and correcting the initial outdoor ambient temperature using a preset correction formula based on the thermistor temperature and the operating parameters to determine the current outdoor ambient temperature. This invention achieves accurate outdoor ambient temperature detection by using a low-cost outdoor ambient temperature detection device and allowing the air conditioner to run with the initial outdoor unit coil temperature as the initial outdoor ambient temperature until the air conditioner stabilizes. After stabilizing, the thermistor temperature and other operating parameters from the outdoor ambient temperature detection device are acquired, and the initial outdoor ambient temperature is corrected using a preset correction formula to determine the current outdoor ambient temperature. This approach effectively reduces production costs while maintaining high accuracy in obtaining the outdoor ambient temperature. Attached Figure Description

[0009] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. 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.

[0010] Figure 1 A flowchart illustrating the method for detecting outdoor ambient temperature of an air conditioner provided in an embodiment of the present invention;

[0011] Figure 2 This is a schematic diagram of a sub-process of the method for detecting outdoor ambient temperature of an air conditioner provided in an embodiment of the present invention;

[0012] Figure 3 This is a schematic diagram of a sub-process of the method for detecting outdoor ambient temperature of an air conditioner provided in an embodiment of the present invention;

[0013] Figure 4 This is a schematic diagram of a sub-process of the method for detecting outdoor ambient temperature of an air conditioner provided in an embodiment of the present invention;

[0014] Figure 5 A simplified logic diagram of the outdoor ambient temperature detection method for an air conditioner provided in an embodiment of the present invention;

[0015] Figure 6A schematic block diagram of an outdoor ambient temperature detection device for an air conditioner provided in an embodiment of the present invention;

[0016] Figure 7 This is a schematic block diagram of an air conditioner provided in an embodiment of the present invention. Detailed Implementation

[0017] 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, not all, of the embodiments of the present invention. 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.

[0018] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0019] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0020] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0021] Please see Figure 1 , Figure 1 This is a flowchart illustrating the outdoor ambient temperature detection method for an air conditioner provided in this embodiment of the invention. The outdoor ambient temperature detection method in this embodiment can be applied to air conditioners equipped with an outdoor ambient temperature detection device featuring a thermistor. This thermistor is located on the control board of the outdoor unit, and its cost is lower than that of the original outer ring temperature sensing bulb. Using this method reduces the number of temperature sensors required, effectively lowering production costs, providing accurate outdoor ambient temperature readings, and reducing the air conditioner's maintenance rate.

[0022] Figure 1 This is a schematic flowchart of the outdoor ambient temperature detection method for an air conditioner provided in an embodiment of the present invention. As shown in the figure, the method includes the following steps S110-S130.

[0023] S110. If an air conditioner start command is received, the initial outdoor unit coil temperature is obtained and the initial outdoor unit coil temperature is used as the initial outdoor ambient temperature.

[0024] In this embodiment, the initial outdoor unit coil temperature is the temperature of the outdoor unit coil before the air conditioner starts to change due to its operation when the air conditioner receives the start command. The initial outdoor ambient temperature is the outdoor ambient temperature used to control the operation of the air conditioner when it is turned on. Specifically, when the air conditioner receives the start command, the initial outdoor unit coil temperature is first collected and stored. This initial outdoor unit coil temperature can be collected before the outdoor fan starts, or it can be collected when the outdoor fan has just started but the outdoor unit coil temperature has not yet started to change. The collected initial outdoor unit coil temperature should be the same as the outdoor unit coil temperature before the outdoor fan starts. Since the initial outdoor unit coil temperature is very close to the outdoor ambient temperature when the air conditioner is not turned on, it can be used as the initial outdoor ambient temperature. The air conditioner can use the initial outdoor ambient temperature to start operation, for example, to control the compressor operating frequency. By using the initial outdoor unit coil temperature as the initial outdoor ambient temperature, the initial outdoor ambient temperature for controlling the operation of the air conditioner can still be obtained even when the temperature sensor for detecting the outdoor ambient temperature is removed, so that the air conditioner can still work normally when the temperature sensor for detecting the outdoor ambient temperature is reduced.

[0025] S120. After the air conditioner has been running for a preset time, the temperature of the thermistor and the operating parameters are obtained.

[0026] In this embodiment, the preset time is the time it takes for the air conditioner to reach a stable operating state with the required parameters. Specifically, the preset time can be determined according to the specific air conditioner, and is typically in the range of 5-10 minutes. The thermistor is a sensor resistor whose resistance changes with temperature. The thermistor can be divided into positive temperature coefficient thermistors and negative temperature coefficient thermistors (NTC). The resistance of a positive temperature coefficient thermistor increases with increasing temperature, while the resistance of a negative temperature coefficient thermistor decreases with increasing temperature. This embodiment uses a negative temperature coefficient thermistor (NTC). The thermistor temperature is the temperature obtained by an outdoor ambient temperature detection device, which uses a thermistor patch instead of the original outdoor ambient temperature detection device. The operating parameters are the current operating parameters of the air conditioner required to obtain an accurate outdoor ambient temperature. The operating parameters may include: outdoor fan speed, air conditioner operating current, actual exhaust temperature during air conditioner operation, and outdoor unit coil temperature. For example, after the air conditioner has been running for 6 minutes, the temperature of the NTC thermistor patch is obtained, along with the outdoor fan speed, the air conditioner's operating current, the actual exhaust temperature during operation, and the outdoor unit coil temperature. Obtaining the thermistor temperature and operating parameters provides data support for accurately determining the outdoor ambient temperature.

[0027] S130. The initial outdoor ambient temperature is corrected according to the thermistor temperature and the operating parameters using a preset correction formula to determine the current outdoor ambient temperature.

[0028] In this embodiment, the preset correction formula is a correction formula determined based on the thermistor temperature and parameters in the air conditioner that affect the outdoor ambient temperature. This preset correction formula allows for the acquisition of an accurate outdoor ambient temperature. Specifically, based on the thermistor temperature collected by the outdoor ambient temperature detection device and the operating parameters within the air conditioner, an accurate corrected outdoor ambient temperature can be obtained using the preset correction formula. By correcting and replacing the initial outdoor ambient temperature with this accurate corrected outdoor ambient temperature, the current outdoor ambient temperature for controlling the air conditioner's operation can be determined. By correcting the initial outdoor ambient temperature based on the thermistor temperature and the operating parameters using the preset correction formula, the operation of the air conditioner can be controlled more accurately.

[0029] In one embodiment, such as Figure 2 As shown, steps S1301-S1302 are included before step S130.

[0030] S1301. Detect the operating mode of the air conditioner and determine whether the operating mode is the air supply mode;

[0031] S1302. If the operating mode is a non-air supply mode, then the target correction formula is determined according to the operating mode.

[0032] In this embodiment, the target correction formula is the correction formula used by the air conditioner when detecting and correcting the outdoor ambient temperature. Specifically, after obtaining the initial outdoor unit coil temperature, the selected operating mode is detected. Since the air conditioner is not cooling or heating in the air supply mode, if the air conditioner's operating mode is air supply mode, there is no need to continuously detect and adjust the outdoor ambient temperature. If the operating mode is non-air supply mode, the target correction formula is determined according to the operating mode. If the operating mode is non-air supply mode, the operating mode is divided according to the air conditioner's effect to determine the target correction formula. Specifically, the same target correction formula is used when the operating mode is dehumidification mode or cooling mode, and a different target correction formula is used when the operating mode is heating mode. By judging the air conditioner's operating mode, an appropriate target correction formula can be selected in different operating modes to ensure accurate acquisition of the outdoor ambient temperature.

[0033] In this embodiment, if the operating mode is a dehumidification mode or a cooling mode, the determined target correction formula is:

[0034] T_outer ring = A*R_outer fan + B-I_current + C*T_exhaust + D*T_outer pipe temperature + E

[0035] *T_thermal+F

[0036] Wherein, T_outer ring is the outdoor ambient temperature, R_outer fan is the outdoor fan speed, I_current is the operating current value, T_exhaust is the exhaust temperature, T_outer pipe temperature is the outdoor unit coil temperature, T_thermometer is the thermistor temperature, and A, B, C, D, E, and F are correction coefficients in the target correction formula.

[0037] Specifically, the thermistor temperature is the temperature detected by the outdoor ambient temperature detection device located on the control board of the outdoor unit. Since the detected temperature is easily affected by the outdoor fan speed, the outdoor unit coil temperature, the actual exhaust temperature during air conditioner operation, and the normal operating current of the air conditioner, a correction formula is formulated based on these parameters. The correction coefficient is a dimensionless parameter with no specific meaning; its specific value is determined through continuous temperature correction experiments based on fitting experimental data. Specifically, when the operating mode is dehumidification mode or cooling mode, the range of correction coefficient A can be 0.00288±0.00005, B can be -1.277±0.005, C can be 0.178±0.005, D can be 0.943±0.005, E can be -0.0685±0.0005, and F can be -7.645±0.005. Therefore, the target correction formula determined when the operating mode is dehumidification mode or cooling mode can be:

[0038] T_outer ring = 0.00288 - R_outer fan + (-1.277) * I_current + 0.178 * T_exhaust + 0.943 * T_outer pipe temperature + (-0.0685) * T_thermistor + (-7.645)

[0039] In this embodiment, if the operating mode is a heating mode, the determined target correction formula is:

[0040] T_outer ring = a*R_external fan + b*I_current + c*T_exhaust + d*T_external pipe temperature + e*T_thermometer + f

[0041] Wherein, T_outer ring is the outdoor ambient temperature, R_outer fan is the outdoor fan speed, I_current is the operating current value, T_exhaust is the exhaust temperature, T_outer pipe temperature is the outdoor unit coil temperature, T_thermometer is the thermistor temperature, and a, b, c, d, e, and f are correction coefficients in the target correction formula.

[0042] Specifically, when the operating mode is heating mode, the correction coefficient A is 0, B can range from 0.141±0.005, C can range from 0.021±0.005, D can range from 1.0019±0.0005, E can range from 0.0383±0.0005, and F can range from 2.949±0.005. Therefore, the target correction formula determined when the operating mode is heating mode can be:

[0043] T_outer ring = 0 - R_outer fan + 0.141 * I_current + 0.021 - T_exhaust + 1.0019 * T_outer pipe temperature + 0.0383 * T_thermistor + 2.949

[0044] In summary, the preset correction formula is determined based on the thermistor temperature detected by the outdoor ambient temperature and the operating parameters that can affect the outdoor ambient temperature, and the target correction formula is determined based on the operating mode. The determined target correction formula can be used to obtain a more accurate outdoor ambient temperature under different operating modes.

[0045] In one embodiment, such as Figure 3 As shown, step S130 further includes steps S131-S134.

[0046] S131. Based on the thermistor temperature and the operating parameters, the initial outdoor ambient temperature is corrected using the preset correction formula to obtain the initial corrected outdoor ambient temperature;

[0047] S132. Determine whether the temperature difference between the initial corrected outdoor ambient temperature and the initial outdoor ambient temperature is within a preset error range;

[0048] S133. If the temperature difference is not within the preset error range, then the initial outdoor ambient temperature is taken as the current outdoor ambient temperature.

[0049] S134. If the temperature difference is within the preset error range, then the initial corrected outdoor ambient temperature is taken as the current outdoor ambient temperature.

[0050] In this embodiment, the initial corrected outdoor ambient temperature is the outdoor ambient temperature data obtained by correcting the initial outdoor ambient temperature based on the thermistor temperature and the operating parameters after the air conditioner starts operating. After determining the operating mode of the air conditioner, the initial outdoor ambient temperature is corrected according to the thermistor temperature and the operating parameters using the correction formula corresponding to the operating mode of the air conditioner to obtain the initial corrected outdoor ambient temperature. The temperature difference between the initial corrected outdoor ambient temperature and the initial outdoor ambient temperature is obtained, and it is determined whether the temperature difference is within a preset error range. Specifically, the initial corrected outdoor ambient temperature is obtained after the air conditioner has been running for a preset time. The preset time is usually a maximum of 10 minutes. The outdoor ambient temperature usually does not change too much within 10 minutes. Therefore, the preset error range does not need to be set too large. In this embodiment, the preset error range is the temperature difference of 2°C. For example, if the initial corrected outdoor ambient temperature is 26℃, the initial outdoor ambient temperature is 25℃, and the temperature difference is 1℃, then the temperature difference is within the preset error range. The initial corrected outdoor ambient temperature can be used as the current outdoor ambient temperature. That is, the outdoor ambient temperature controlling the air conditioner's operation is replaced by the initial corrected outdoor ambient temperature, which guides the operation control of the air conditioner's compressor and outdoor fan. If the temperature difference is not within the preset error range, the initial outdoor ambient temperature continues to be used as the current outdoor ambient temperature to control the air conditioner's operation. It can be understood that when the temperature difference is within the error range, the outdoor ambient temperature controlling the air conditioner's operation will be modified. By determining whether the temperature difference between the initial corrected outdoor ambient temperature and the initial outdoor ambient temperature is within the preset error range and modifying the current outdoor ambient temperature of the air conditioner, precise control and adjustment of the air conditioner's operation can be achieved.

[0051] In one embodiment, such as Figure 4 As shown, step S130 further includes steps S135-S137.

[0052] S135. The thermistor temperature and the operating parameters are obtained again according to the preset time period, and the current outdoor ambient temperature is corrected according to the thermistor temperature and the operating parameters obtained again by the preset correction formula to obtain the current corrected outdoor ambient temperature.

[0053] S136. Determine whether the first temperature difference between the current corrected outdoor ambient temperature and the current outdoor ambient temperature is within a preset error range;

[0054] S137. If the first temperature difference is within the preset error range, then the current corrected outdoor ambient temperature is taken as the current outdoor ambient temperature.

[0055] In this embodiment, the preset time period is defined by a preset time, and the cycle restarts at each preset time. Typically, the preset time period for the air conditioner can be set to 25 to 50 minutes. For example, in this embodiment, the preset time period is 30 minutes. Every 30 minutes, the thermistor temperature and operating parameters are acquired, and corresponding actions are performed. The current outdoor ambient temperature is the outdoor ambient temperature used to control the air conditioner's operation, and the current corrected outdoor ambient temperature is the current outdoor ambient temperature obtained through correction. Specifically, every 30 minutes, the thermistor temperature and operating parameters are acquired again, and the current outdoor ambient temperature is corrected using the preset correction formula based on the re-acquired thermistor temperature and operating parameters to obtain the current corrected outdoor ambient temperature. Then, a first temperature difference between the corrected outdoor ambient temperature and the current outdoor ambient temperature is obtained, and it is determined whether the first temperature difference is within a preset error range. For example, if the current corrected outdoor ambient temperature is 26°C and the current outdoor ambient temperature is 27.5°C, then the first temperature difference is within the preset error range, and the current corrected outdoor ambient temperature can be used as the current outdoor ambient temperature for controlling the air conditioner's operation. By obtaining the current corrected outdoor ambient temperature again according to a preset time period and using the current corrected outdoor ambient temperature as the current outdoor ambient temperature, the outdoor ambient temperature for controlling the operation of the air conditioner can be more accurate, avoiding increased operating burden on the air conditioner due to temperature changes, and enabling more accurate control of the air conditioner's operation.

[0056] In one embodiment, such as Figure 4 As shown, step S130 further includes step S138.

[0057] S138. If the first temperature difference is not within the preset error range, the current outdoor ambient temperature remains unchanged, and after running for a preset running time, the process returns to the step of determining whether the first temperature difference between the current corrected outdoor ambient temperature and the current outdoor ambient temperature is within the preset error range.

[0058] In this embodiment, the preset running time is the time the air conditioner operates at the current outdoor ambient temperature when the first temperature difference is not within the preset error range. Specifically, if the first temperature difference is not within the preset error range, the air conditioner continues to operate at the current outdoor ambient temperature. After running for the preset running time, the system returns to the step of determining whether the first temperature difference between the current corrected outdoor ambient temperature and the current outdoor ambient temperature is within the preset error range. The preset running time can be ten minutes or five minutes, and is not limited thereto, as long as the outdoor ambient temperature during which the air conditioner operates does not differ too much from the outdoor temperature. By determining whether the first temperature difference is within the preset error range, performing different operations based on the result, and causing the air conditioner to return to the step of determining whether the first temperature difference is within the preset error range when it is not, the outdoor ambient temperature detection method of the air conditioner forms a closed-loop logic. This effectively reduces production costs while obtaining accurate outdoor ambient temperature and controlling the operation of the air conditioner accordingly.

[0059] To further understand the outdoor ambient temperature detection process of the air conditioner in this embodiment of the invention, the following specific examples illustrate the process:

[0060] like Figure 5As shown, when the air conditioner receives the start command, it obtains the initial outdoor unit coil temperature before the outdoor fan starts, and detects and judges the operating mode of the air conditioner. If the operating mode is the air supply mode, there is no need to control the outdoor ambient temperature. If the operating mode is not the air supply mode, the initial outdoor unit coil temperature is used as the initial outdoor ambient temperature. The initial outdoor ambient temperature is the outdoor ambient temperature used to control the operation of the air conditioner, and the air conditioner starts to operate using this temperature. After a preset running time, such as 6 minutes, when the air conditioner reaches a stable state with certain operating parameters, the temperature of the thermistor and the operating parameters of the air conditioner are acquired. Based on the thermistor temperature and the operating parameters, the initial outdoor ambient temperature is corrected using the preset correction formula to obtain an initial corrected outdoor ambient temperature. The temperature difference between the initial corrected outdoor ambient temperature and the initial outdoor ambient temperature is obtained, and it is determined whether the temperature difference is within a preset error range. For example, if the initial corrected outdoor ambient temperature is 25℃ and the initial outdoor ambient temperature is 26℃, and the preset error range for the temperature difference is 2℃, then the temperature difference is 1℃. In this case, the initial corrected outdoor ambient temperature of 25℃ is used as the current outdoor ambient temperature to control the operation of the air conditioner. If the initial corrected outdoor ambient temperature is 25℃ and the initial outdoor ambient temperature is 28℃, then the temperature difference is 3℃. In this case, the initial outdoor ambient temperature of 28℃ is continued to be used as the current outdoor ambient temperature to control the operation of the air conditioner. After running for a preset time, for example, three minutes, the temperature of the thermistor and the operating parameters of the air conditioner are acquired again, and the current corrected outdoor ambient temperature is acquired again. If the current corrected outdoor ambient temperature is 25.5℃ and the current outdoor ambient temperature is still 28℃, the temperature difference of 2.5℃ is not within the preset error range. Then, the initial outdoor ambient temperature is used as the current outdoor ambient temperature until the temperature difference is within the preset error range. If the initial corrected outdoor ambient temperature is used as the current outdoor ambient temperature to control the air conditioner's operation, the current corrected outdoor ambient temperature is acquired according to a preset time period, and it is determined whether the first temperature difference between the current corrected outdoor ambient temperature and the current outdoor ambient temperature is within the preset error range. If the first temperature difference is 1℃ and within the preset error range, the current corrected outdoor ambient temperature is used as the current outdoor ambient temperature. If the first temperature difference is 3℃ and not within the preset error range, the air conditioner is controlled using the current outdoor ambient temperature. After running for a preset time, the first temperature difference between the current corrected outdoor ambient temperature and the current outdoor ambient temperature is assessed again until the first temperature difference is within the preset error range.By implementing this method, the number of temperature sensors used can be reduced, production costs can be effectively lowered, accurate outdoor ambient temperature can be obtained, and the maintenance rate of air conditioners can be reduced.

[0061] Figure 6 This is a schematic block diagram of an outdoor ambient temperature detection device 200 for an air conditioner provided in an embodiment of the present invention. Figure 6 As shown, corresponding to the above-described method for detecting the outdoor ambient temperature of an air conditioner, the present invention also provides an air conditioner outdoor ambient temperature detection device. This air conditioner outdoor ambient temperature detection device includes a unit for performing the above-described method for detecting the outdoor ambient temperature of an air conditioner, and the device can be configured in an air conditioner. Specifically, please refer to... Figure 6 The outdoor ambient temperature detection device for the air conditioner includes a first acquisition unit 210, a second acquisition unit 220, and a determination unit 230.

[0062] The first acquisition unit 210 is used to acquire the initial outdoor unit coil temperature when it receives an air conditioner start command, and to use the initial outdoor unit coil temperature as the initial outdoor ambient temperature.

[0063] In one embodiment, the first acquisition unit 210 includes a detection unit and a formula determination unit.

[0064] The detection unit is used to detect the operating mode of the air conditioner and determine whether the operating mode is the air supply mode;

[0065] A formula determination unit is used to determine a target correction formula based on the operating mode if the operating mode is a non-air supply mode.

[0066] The second acquisition unit 220 is used to acquire the temperature of the thermistor and operating parameters after the air conditioner has been running for a preset time.

[0067] The determining unit 230 is used to correct the initial outdoor ambient temperature based on the thermistor temperature and the operating parameters using a preset correction formula to determine the current outdoor ambient temperature.

[0068] In one embodiment, the determining unit 230 includes an initial correction unit, a judgment unit, a first temperature unit, and a second temperature unit.

[0069] An initial correction unit is used to correct the initial outdoor ambient temperature based on the thermistor temperature and the operating parameters using the preset correction formula to obtain an initial corrected outdoor ambient temperature.

[0070] The judgment unit is used to determine whether the temperature difference between the initial corrected outdoor ambient temperature and the initial outdoor ambient temperature is within a preset error range;

[0071] The first temperature unit is used to take the initial outdoor ambient temperature as the current outdoor ambient temperature if the temperature difference is not within the preset error range.

[0072] The second temperature unit is used to take the initial corrected outdoor ambient temperature as the current outdoor ambient temperature if the temperature difference is within the preset error range.

[0073] In one embodiment, the determining unit 230 includes a current correction unit, a judgment subunit, a first temperature subunit, and a second temperature subunit.

[0074] The correction unit is used to reacquire the thermistor temperature and the operating parameters according to a preset time period, and correct the current outdoor ambient temperature according to the reacquired thermistor temperature and the operating parameters through the preset correction formula to obtain the current corrected outdoor ambient temperature.

[0075] The judgment subunit is used to determine whether the first temperature difference between the current corrected outdoor ambient temperature and the current outdoor ambient temperature is within a preset error range.

[0076] The first temperature subunit is used to take the current corrected outdoor ambient temperature as the current outdoor ambient temperature if the first temperature difference is within the preset error range.

[0077] The second temperature subunit is used to determine whether the first temperature difference between the current corrected outdoor ambient temperature and the current outdoor ambient temperature is within the preset error range if the first temperature difference is not within the preset error range, and to return to the step of determining whether the first temperature difference between the current corrected outdoor ambient temperature and the current outdoor ambient temperature is within the preset error range after running a preset running time.

[0078] It should be noted that those skilled in the art can clearly understand that the specific implementation process of the above-mentioned outdoor ambient temperature detection device 200 for air conditioners and each unit can be referred to the corresponding description in the foregoing method embodiments. For the sake of convenience and brevity, it will not be repeated here.

[0079] The aforementioned outdoor ambient temperature detection device for air conditioners can be implemented as a computer program, which can, for example... Figure 7 The air conditioner shown is running.

[0080] Please see Figure 7 , Figure 7 This is a schematic block diagram of an air conditioner provided in an embodiment of this application.

[0081] See Figure 7The air conditioner 500 includes a processor 502, a memory, and a network interface 505 connected via a system bus 501. The memory may include a non-volatile storage medium 503 and internal memory 504.

[0082] The non-volatile storage medium 503 may store an operating system 5031 and a computer program 5032. The computer program 5032 includes program instructions that, when executed, cause the processor 502 to perform a method for detecting the outdoor ambient temperature of an air conditioner.

[0083] The processor 502 is used to provide computing and detection capabilities to support the operation of the entire air conditioner 500.

[0084] The internal memory 504 provides an environment for the operation of the computer program 5032 in the non-volatile storage medium 503. When the computer program 5032 is executed by the processor 502, the processor 502 can execute a method for detecting the outdoor ambient temperature of an air conditioner.

[0085] This network interface 505 is used for network communication with other devices. Those skilled in the art will understand that... Figure 7 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the air conditioner 500 to which the present application is applied. The specific air conditioner 500 may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0086] The processor 502 is used to run a computer program 5032 stored in a memory to implement the steps of the above method.

[0087] It should be understood that in the embodiments of this application, the processor 502 may be a central processing unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0088] It will be understood by those skilled in the art that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program includes program instructions and can be stored in a storage medium, which is a computer-readable storage medium. The program instructions are executed by at least one processor in the computer system to implement the process steps of the embodiments of the above methods.

[0089] Therefore, the present invention also provides a storage medium. This storage medium can be a computer-readable storage medium. The storage medium stores a computer program, wherein the computer program includes program instructions. When executed by a processor, the program instructions cause the processor to perform the steps of the method described above.

[0090] The storage medium can be any computer-readable storage medium capable of storing program code, such as a USB flash drive, portable hard drive, read-only memory (ROM), magnetic disk, or optical disk.

[0091] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0092] In the several embodiments provided by this invention, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For example, the division of each unit is merely a logical functional division, and there may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.

[0093] The steps in the method of this invention can be adjusted, merged, or reduced in order according to actual needs. The units in the device of this invention can be merged, divided, or reduced according to actual needs. Furthermore, the functional units in the various embodiments of this invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0094] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or 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 an air conditioner (which may be a personal computer, a terminal, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention.

[0095] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for detecting the outdoor ambient temperature of an air conditioner, characterized in that, include: If an air conditioner start command is received, the initial outdoor unit coil temperature is obtained and used as the initial outdoor ambient temperature. After the air conditioner has been running for a preset time, the temperature and operating parameters of the thermistor are obtained, wherein the thermistor is located on the control board of the outdoor unit; The initial outdoor ambient temperature is corrected based on the thermistor temperature and the operating parameters using a target correction formula to determine the current outdoor ambient temperature. If the operating mode is dehumidification or cooling, the determined target correction formula is as follows: Wherein, T_outer ring is the outdoor ambient temperature, R_outer fan is the outdoor fan speed, I_current is the air conditioner operating current value, T_exhaust is the actual exhaust temperature of the air conditioner during operation, T_outer pipe temperature is the outdoor unit coil temperature, T_thermometer is the thermistor temperature, and A, B, C, D, E, and F are correction coefficients in the target correction formula, wherein the value of E ranges from -0.0685 to 0.0005. If the operating mode is heating mode, then the determined target correction formula is: Wherein, T_outer ring is the outdoor ambient temperature, R_outer fan is the outdoor fan speed, I_current is the air conditioner operating current value, T_exhaust is the actual exhaust temperature of the air conditioner during operation, T_outer pipe temperature is the outdoor unit coil temperature, T_thermometer is the thermistor temperature, and a, b, c, d, e, and f are correction coefficients in the target correction formula, wherein the value of e ranges from 0.0383±0.0005; The initial corrected outdoor ambient temperature is obtained by correcting the initial outdoor ambient temperature based on the thermistor temperature and the operating parameters using the preset correction formula; it is then determined whether the temperature difference between the initial corrected outdoor ambient temperature and the initial outdoor ambient temperature is within a preset error range; if the temperature difference is not within the preset error range, the initial outdoor ambient temperature is taken as the current outdoor ambient temperature; if the temperature difference is within the preset error range, the initial corrected outdoor ambient temperature is taken as the current outdoor ambient temperature. The thermistor temperature and operating parameters are acquired again according to a preset time period, and the current outdoor ambient temperature is corrected according to the acquired thermistor temperature and operating parameters using the preset correction formula to obtain the current corrected outdoor ambient temperature; it is determined whether the first temperature difference between the current corrected outdoor ambient temperature and the current outdoor ambient temperature is within a preset error range; if the first temperature difference is within the preset error range, the current corrected outdoor ambient temperature is taken as the current outdoor ambient temperature; if the first temperature difference is not within the preset error range, the current outdoor ambient temperature remains unchanged, and after running for a preset running time, the process returns to the step of determining whether the first temperature difference between the current corrected outdoor ambient temperature and the current outdoor ambient temperature is within the preset error range.

2. The method according to claim 1, characterized in that, Before the step of correcting the collected outdoor ambient temperature based on the thermistor temperature and the operating parameters using a preset correction formula, the following steps are included: Detect the operating mode of the air conditioner and determine whether the operating mode is the fan-supply mode; If the operating mode is a non-air supply mode, then the target correction formula is determined according to the operating mode.

3. An outdoor ambient temperature detection device for an air conditioner, characterized in that, include: The first acquisition unit is used to acquire the initial outdoor unit coil temperature when an air conditioner start command is received, and to use the initial outdoor unit coil temperature as the initial outdoor ambient temperature. The second acquisition unit is used to acquire the temperature and operating parameters of the thermistor after the air conditioner has been running for a preset time, wherein the thermistor is located on the control board of the outdoor unit. The determining unit is used to correct the initial outdoor ambient temperature based on the thermistor temperature and target operating parameters using a preset correction formula to determine the current outdoor ambient temperature. If the operating mode is dehumidification mode or cooling mode, the determined target correction formula is: Wherein, T_outer ring is the outdoor ambient temperature, R_outer fan is the outdoor fan speed, I_current is the air conditioner operating current value, T_exhaust is the actual exhaust temperature of the air conditioner during operation, T_outer pipe temperature is the outdoor unit coil temperature, T_thermometer is the thermistor temperature, and A, B, C, D, E, and F are correction coefficients in the target correction formula, wherein the value of E ranges from -0.0685 to 0.0005. If the operating mode is heating mode, then the determined target correction formula is: Wherein, T_outer ring is the outdoor ambient temperature, R_outer fan is the outdoor fan speed, I_current is the air conditioner operating current value, T_exhaust is the actual exhaust temperature of the air conditioner during operation, T_outer pipe temperature is the outdoor unit coil temperature, T_thermometer is the thermistor temperature, and a, b, c, d, e, and f are correction coefficients in the target correction formula, wherein the value of e ranges from 0.0383±0.0005; The initial corrected outdoor ambient temperature is obtained by correcting the initial outdoor ambient temperature based on the thermistor temperature and the operating parameters using the preset correction formula; it is then determined whether the temperature difference between the initial corrected outdoor ambient temperature and the initial outdoor ambient temperature is within a preset error range; if the temperature difference is not within the preset error range, the initial outdoor ambient temperature is taken as the current outdoor ambient temperature; if the temperature difference is within the preset error range, the initial corrected outdoor ambient temperature is taken as the current outdoor ambient temperature. The thermistor temperature and operating parameters are acquired again according to a preset time period, and the current outdoor ambient temperature is corrected according to the acquired thermistor temperature and operating parameters using the preset correction formula to obtain the current corrected outdoor ambient temperature; it is determined whether the first temperature difference between the current corrected outdoor ambient temperature and the current outdoor ambient temperature is within a preset error range; if the first temperature difference is within the preset error range, the current corrected outdoor ambient temperature is taken as the current outdoor ambient temperature; if the first temperature difference is not within the preset error range, the current outdoor ambient temperature remains unchanged, and after running for a preset running time, the process returns to the step of determining whether the first temperature difference between the current corrected outdoor ambient temperature and the current outdoor ambient temperature is within the preset error range.

4. An air conditioner, characterized in that, The air conditioner includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the method as described in any one of claims 1-2.

5. A storage medium, characterized in that, The storage medium stores a computer program, which includes program instructions that, when executed by a processor, can implement the method as described in any one of claims 1-2.

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