Method and device for determining filth blockage rate of filter screen of air conditioner and air conditioner

Abstract

The invention relates to the technical field of intelligent household appliances, and discloses a method for determining the filth blockage rate of a filter screen of an air conditioner, and the method comprises the following steps: under the condition that the air conditioner operates stably, obtaining the air outlet amount of an indoor unit, the stable operation current of a fan of an outdoor unit and the fan rotating speed of the outdoor unit; obtaining the length of an air pipe of the air conditioner; according to the fan rotating speed and the air pipe length of the outdoor unit, a target calculation formula is determined; and calculating the current filth blockage rate of the filter screen according to a target calculation formula based on the stable operation current and the air outlet amount of the indoor unit. In the process of determining the current filth blockage rate of the filter screen of the air conditioner, whether the air conditioner is connected with the air pipe or not and the length of the air pipe are considered. The filth blockage condition of the filter screen of the air conditioner connected with the air pipe is judged. The invention further discloses a device for determining the filth blockage rate of the filter screen of the air conditioner and the air conditioner.

Description

Technical Field

[0001] The present application relates to the technical field of smart home appliances, for example, to a method and device for determining the dirty and blocked rate of an air conditioner filter, and an air conditioner. Background Art

[0002] After long-term operation, the filter of the air conditioner is prone to dust accumulation, which will cause the air conditioner performance to decline and energy consumption to increase. Currently, most air conditioners on the market determine the degree of filter blockage based on the length of time the air conditioner has been running, and remind users to clean the filter. However, this method has low accuracy and often cannot truly reflect the filter blockage.

[0003] In order to solve the above problems, a method for prompting the condition of the filter is provided in the related art, the method comprising: obtaining the rotation speed of the internal fan and obtaining the actual wind pressure of the air inlet channel; obtaining the ideal wind pressure corresponding to the rotation speed of the internal fan; if the actual wind pressure of the air inlet channel is lower than the ideal wind pressure, outputting a prompt message, wherein the prompt message is used to prompt the user of the dirty and blocked condition of the filter. Obtaining the ideal wind pressure corresponding to the rotation speed of the internal fan comprises: using a first model to analyze the rotation speed of the internal fan, and obtaining the ideal wind pressure corresponding to the rotation speed of the internal fan, wherein the first model is trained by machine learning using multiple sets of data, and each set of data in the multiple sets of data comprises: the rotation speed and the ideal wind pressure corresponding to the rotation speed.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] The related technology determines and indicates the dirtiness and blockage condition of the air conditioner filter based on the difference between the actual wind pressure and the ideal wind pressure at the same fan speed. Since the wind pressure change of the air conditioner connected to the air duct is not obvious, the solution of the related technology is not suitable for determining the dirtiness and blockage condition of the filter of the air conditioner connected to the air duct.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide a method and device for determining the dirtiness and blockage rate of an air conditioner filter, and an air conditioner, which can be used to determine the dirtiness and blockage condition of an air conditioner filter that is not connected to an air duct, and can also be used to determine the dirtiness and blockage condition of an air conditioner filter that is connected to an air duct.

[0009] In some embodiments, a method for determining the dirty and clogging rate of an air conditioner filter includes: when the air conditioner is running smoothly, obtaining the air outlet volume of the indoor unit, the steady-state operating current of the outdoor unit fan and the fan speed of the outdoor unit; obtaining the air duct length of the air conditioner; determining a target calculation formula based on the fan speed and air duct length of the outdoor unit; and calculating the current dirty and clogging rate of the filter according to the target calculation formula based on the steady-state operating current and the air outlet volume of the indoor unit.

[0010] Optionally, a target calculation formula is determined based on the fan speed and duct length of the outdoor unit, including: based on a first mapping relationship, screening out multiple groups of formula coefficients corresponding to the duct length from a coefficient database; based on a second mapping relationship, screening out target formula coefficients corresponding to the fan speed from multiple groups of formula coefficients; and determining the target calculation formula based on the target formula coefficients.

[0011] Optionally, the target formula coefficients include a first coefficient, a second coefficient, a third coefficient, a fourth coefficient and a fifth coefficient, and the target calculation formula is as follows:

[0012]

[0013] Among them, K is the current dirtiness and clogging rate of the filter, I1 is the stable operating current of the outdoor unit fan, Q is the air output of the indoor unit, k1 is the first coefficient, k2 is the second coefficient, k3 is the third coefficient, k4 is the fourth coefficient, and k5 is the fifth coefficient.

[0014] Optionally, obtaining the air duct length of the air conditioner includes: when the air conditioner is initially powered on, controlling the outdoor unit fan to operate at a rated air output; obtaining the initial operating current of the outdoor unit fan during operation; and determining the air duct length based on the initial operating current.

[0015] Optionally, determining the duct length according to the initial operating current includes: determining a duct length coefficient; and determining the duct length according to the duct length coefficient based on the initial operating current.

[0016] Optionally, based on the initial operating current, the duct length is determined according to the duct length coefficient, including calculating the duct length in the following manner:

[0017] M=N×I2+k6

[0018] Among them, M is the duct length, I2 is the initial operating current, k6 is the sixth coefficient, and N is the duct length coefficient.

[0019] Optionally, the length factor is calculated as follows:

[0020] N=(k7×I 3 +k8×I 2 -k9)×I2

[0021] Among them, N is the duct length coefficient, I2 is the initial operating current, k7 is the seventh coefficient, k8 is the eighth coefficient, and k9 is the ninth coefficient.

[0022] Optionally, after calculating the current dirtiness and clogging rate of the filter according to the target calculation formula, the method further includes: adjusting the fan speed of the outdoor unit according to the current dirtiness and clogging rate.

[0023] In some embodiments, a device for determining the dirty and blocked rate of an air conditioner filter includes a processor and a memory storing program instructions, and the processor is configured to execute the method for determining the dirty and blocked rate of an air conditioner filter as described above when running the program instructions.

[0024] In some embodiments, an air conditioner includes: an equipment body; and a device for determining the dirty and blocked rate of an air conditioner filter as described above, which is installed on the equipment body.

[0025] The method and device for determining the dirty and blocked rate of the air conditioner filter, and the air conditioner provided in the embodiments of the present disclosure can achieve the following technical effects:

[0026] In the disclosed embodiment, the air conditioner includes an indoor unit, an outdoor unit and an air duct. In the process of determining the current dirty and blocked rate of the air conditioner filter, the target calculation formula is first determined based on the length of the air duct and the fan speed of the outdoor unit when the air conditioner is running smoothly. Then, the current dirty and blocked rate of the filter is calculated based on the stable running current of the outdoor unit fan and the air volume of the indoor unit. In the disclosed embodiment, whether the air conditioner is connected to an air duct and the length of the air duct are considered. The determination of the dirty and blocked condition of the filter of the air conditioner connected to the air duct is realized.

[0027] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0029] Figure 1 is a schematic diagram of an air conditioner provided by an embodiment of the present disclosure;

[0030] Figure 2is a schematic diagram of a method for determining a dirty and blocked rate of an air conditioner filter provided by an embodiment of the present disclosure;

[0031] Figure 3 is a schematic diagram of another method for determining the dirty and blocked rate of an air conditioner filter provided by an embodiment of the present disclosure;

[0032] Figure 4 is a schematic diagram of another method for determining the dirty and blocked rate of an air conditioner filter provided by an embodiment of the present disclosure;

[0033] Figure 5 is a schematic diagram of another method for determining the dirty and blocked rate of an air conditioner filter provided by an embodiment of the present disclosure;

[0034] Figure 6 It is a schematic diagram of a device for determining the dirty and blocked rate of an air conditioner filter provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0035] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0036] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0037] Unless otherwise stated, the term "plurality" means two or more.

[0038] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0039] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0040] The term "correspondence" may refer to an association relationship or a binding relationship. The correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0042] like Figure 1 As shown, the air conditioner 10 provided by the embodiment of the present disclosure includes a device body 100 and a device 600 for determining the dirty and blocked rate of the air conditioner filter. Specifically, the device 600 for determining the dirty and blocked rate of the air conditioner filter is installed on the device body 100.

[0043] Optionally, the air conditioner includes an indoor unit, an outdoor unit, an air duct and a filter 200 .

[0044] Optionally, the device 600 for determining the dirty and blocked rate of the air conditioner filter includes a processor. The processor can determine a target calculation formula based on the obtained fan speed of the outdoor unit and the air duct length of the air conditioner; and can calculate the current dirty and blocked rate of the filter 200 according to the target calculation formula based on the stable operation current and the air volume of the indoor unit. This allows the user to understand the dirty and blocked condition of the filter 200 of the air conditioner 10 so as to clean it in time.

[0045] Combination Figure 1 The air conditioner shown in the embodiment of the present disclosure provides a method for determining the dirty and blocked rate of the air conditioner filter, such as Figure 2 As shown, the method includes:

[0046] S201, when the air conditioner is running smoothly, the processor obtains the air volume of the indoor unit, the stable operation current of the outdoor fan, and the fan speed of the outdoor unit.

[0047] Specifically, the theoretical air volume of the indoor unit under this parameter can be determined based on the steady-state operating current of the outdoor unit fan and the fan speed of the outdoor unit. The difference between the theoretical air volume and the actual air volume of the indoor unit is usually caused by the filter of the air conditioner being dirty and clogged. Therefore, the dirty and clogged condition of the filter of the air conditioner can be determined by comparing the theoretical air volume of the indoor unit with the obtained air volume of the indoor unit. Therefore, the disclosed embodiment needs to obtain the air volume of the indoor unit, the steady-state operating current of the outdoor unit fan, and the fan speed of the outdoor unit.

[0048] Specifically, when the air conditioner is in an unstable operating stage such as the startup stage, the accuracy of the filter blockage rate calculated from the air output of the indoor unit, the stable operating current of the outdoor unit fan and the fan speed of the outdoor unit is low. Therefore, the present disclosure stipulates that the above parameters are obtained when the air conditioner is running stably.

[0049] S202: The processor obtains the length of the air duct of the air conditioner.

[0050] Specifically, the air duct of the air conditioner is an air duct of the air conditioner, which is used to guide cold air or hot air from the air outlet of the air conditioner to a position required by a user.

[0051] Specifically, for an air conditioner connected to an air duct, since its air output is associated with the length of the air duct (e.g., under the same conditions, the air output of an air conditioner with a long air duct is less than that of an air conditioner with a short air duct), when determining whether the filter of the air conditioner connected to the air duct is dirty or clogged, the length of the air duct connected to the air conditioner also needs to be considered.

[0052] S203: The processor determines a target calculation formula according to the fan speed and the air duct length of the outdoor unit.

[0053] Specifically, since the air conditioner has different ways of calculating the theoretical air volume of the indoor unit at different air duct lengths or different outdoor unit fan speeds, the ways of calculating the dirty and blocked rate of the air conditioner filter at different air duct lengths or different outdoor unit fan speeds are also different. Therefore, the disclosed embodiment needs to determine the target calculation formula for calculating the dirty and blocked rate of the air conditioner filter according to the fan speed and air duct length of the outdoor unit.

[0054] Optionally, the embodiment of the present disclosure pre-constructs a model for determining a target calculation formula, and the model can be pre-trained based on a neural network model or a large model. The processor only needs to input the fan speed and duct length of the outdoor unit into the model to obtain the target calculation method corresponding to the fan speed and duct length.

[0055] Optionally, the embodiment of the present disclosure pre-builds a mapping relationship for determining a target calculation formula. Based on the mapping relationship, the processor can find out the target calculation formula corresponding to the fan speed and the air duct length.

[0056] S204: The processor calculates the current dirtiness and blockage rate of the filter according to a target calculation formula based on the steady-state operating current and the air volume of the indoor unit.

[0057] Specifically, after determining the target calculation formula, the processor brings the steady-state operating current of the outdoor unit fan and the indoor unit air volume into the target formula to obtain the current dirtiness and blockage rate of the air conditioner filter.

[0058] It should be noted that the dirty and blocked rate of the air conditioner filter in the disclosed embodiment is expressed as the percentage of the dirty and blocked area of ​​the filter to the total area of ​​the filter. For example, if the calculated current dirty and blocked rate of the filter is 50%, it means that the dirty and blocked area accounts for 50% of the total area of ​​the filter.

[0059] In the disclosed embodiment, the air conditioner includes an indoor unit, an outdoor unit and an air duct. In the process of determining the current dirty and blocked rate of the air conditioner filter, the target calculation formula is first determined based on the length of the air duct and the fan speed of the outdoor unit when the air conditioner is running smoothly. Then, the current dirty and blocked rate of the filter is calculated based on the stable running current of the outdoor unit fan and the air volume of the indoor unit. In the disclosed embodiment, whether the air conditioner is connected to an air duct and the length of the air duct are considered. The determination of the dirty and blocked condition of the filter of the air conditioner connected to the air duct is realized.

[0060] The present disclosure provides a method for determining the dirty and blocked rate of an air conditioner filter. Figure 3 As shown, the method includes:

[0061] S301, the processor obtains the air volume of the indoor unit, the stable operation current of the outdoor fan, and the fan speed of the outdoor unit when the air conditioner is running smoothly.

[0062] S302: The processor obtains the length of the air duct of the air conditioner.

[0063] S303: The processor selects multiple groups of formula coefficients corresponding to the air duct length from the coefficient database based on the first mapping relationship.

[0064] Specifically, the calculation methods of the dirty clogging rate of the filter corresponding to different air duct lengths are different, and under the same air duct length, the calculation methods of the dirty clogging rate of the filter corresponding to the fan speed of different outdoor units are also different. Specifically, the different calculation methods are reflected in the coefficients of each parameter in the calculation formula. Therefore, the embodiment of the present disclosure needs to screen out multiple sets of formula coefficients corresponding to the air duct length from the coefficient database based on the preset first mapping relationship.

[0065] S304: The processor selects a target formula coefficient corresponding to the fan speed from the multiple groups of formula coefficients based on the second mapping relationship.

[0066] Specifically, the calculation methods corresponding to the fan speeds of different outdoor units are different, and the different calculation methods are reflected in the coefficients of each parameter in the calculation formula. Therefore, the disclosed embodiment can determine the target formula coefficient corresponding to the fan speed of the outdoor unit from multiple groups of formula coefficients corresponding to the same air duct length based on the preset second mapping relationship.

[0067] S305: The processor determines a target calculation formula according to the target formula coefficients.

[0068] Specifically, by assigning each coefficient in the target formula coefficient to a corresponding position, the target calculation formula can be obtained.

[0069] S306: The processor calculates the current dirtiness and blockage rate of the filter according to a target calculation formula based on the steady-state operating current and the air volume of the indoor unit.

[0070] Optionally, the target formula coefficients include a first coefficient, a second coefficient, a third coefficient, a fourth coefficient and a fifth coefficient, and the target calculation formula is as follows:

[0071]

[0072] Among them, K is the current dirty and blocked rate of the filter, I1 is the stable operating current of the outdoor unit fan, and Q is the air volume of the indoor unit. k1 is the first coefficient, k2 is the second coefficient, k3 is the third coefficient, k4 is the fourth coefficient, and k5 is the fifth coefficient.

[0073] For example, the length of the air duct is 5m and the fan speed of the outdoor unit is 1000rpm:

[0074] Based on the first mapping relationship, multiple groups of formula coefficients corresponding to the 5m duct length can be screened out from the coefficient database, including group A (speed is greater than or equal to 900rpm, and speed is less than or equal to 950rpm): [0.0238, 0.0238 2 +2×10 7 , 0.9715, 12.086, 131.64], Group B ((speed greater than 950rpm, and speed less than or equal to 1000rpm): [0.0238, 0.0238 2 +2×10 7 , 0.5849, 12.784, 149.1] and Group C ((speed greater than 1000rpm, and speed less than or equal to 1050rpm): [0.0238, 0.0238 2 +2×10 7 , 0.6796, 6.9652, 157.04].

[0075] Based on the second mapping relationship, it can be determined that the target formula coefficient corresponding to the fan speed of the outdoor unit of 1000 rpm is the formula of group B.

[0076] Assign 0.0238 to the first coefficient and 0.0238 2 +2×10 7 Assign a value to the second coefficient, assign 0.5849 to the third coefficient, assign 12.784 to the fourth coefficient, and assign 149.1 to the fifth coefficient to obtain the target calculation formula:

[0077]

[0078] Furthermore, the processor obtains the air volume of the indoor unit and the stable operating current of the outdoor unit fan, and puts them into the above target calculation formula to obtain the current dirty and blocked rate of the air conditioner filter.

[0079] In the disclosed embodiment, considering that the calculation methods of the dirty and clogging rate of the filter corresponding to different air duct lengths are different, and the calculation methods of the dirty and clogging rate of the filter corresponding to the fan speeds of different outdoor units under the same air duct length are also different, a first mapping relationship and a second mapping relationship are preset. Before determining the current dirty and clogging rate of the filter, the target calculation formula corresponding to the air duct length and the fan speed of the outdoor unit is first determined based on the preset first mapping relationship and the second mapping relationship, and then the current dirty and clogging rate of the filter is calculated according to the target calculation formula. In this way, the accuracy of the determined current dirty and clogging rate of the filter is improved.

[0080] The present disclosure provides a method for determining the dirty and blocked rate of an air conditioner filter. Figure 4 As shown, the method includes:

[0081] S401, the processor obtains the air volume of the indoor unit, the stable operation current of the outdoor fan, and the fan speed of the outdoor unit when the air conditioner is running smoothly.

[0082] S402: When the air conditioner is initially powered on, the processor controls the outdoor fan to operate at a rated air volume.

[0083] Specifically, since the air duct length of the air conditioner is set according to the actual situation when the air conditioner is installed, the length of the air duct may be unclear to the user. Therefore, it is necessary to calculate the length of the air duct according to the operating parameters of the air conditioner. Since the filter of the air conditioner may become dirty and blocked after a long period of operation, the calculated air duct length is inaccurate. Therefore, in the embodiment of the present disclosure, it is necessary to control the air conditioner to run at the rated air volume for a certain period of time when the air conditioner is initially powered on, so as to facilitate the subsequent calculation of the air duct length of the air conditioner according to the operating parameters of the air conditioner during this period of time.

[0084] S403: The processor obtains the initial operating current of the outdoor unit fan during operation.

[0085] Specifically, when the air duct length is different, in order to make the air volume of the air conditioner reach the rated air volume, the required speed of the outdoor unit fan is different. Since the fan speed of the outdoor unit is associated with the operating current of the outdoor unit fan, and the operating current is easier to obtain than the speed data. Therefore, in the embodiment of the present disclosure, when the air conditioner is initially powered on and operates at the rated air volume, the initial operating current of the outdoor unit fan will be obtained, so as to determine the air duct length of the air conditioner according to the initial operating current.

[0086] S404: The processor determines the length of the air duct according to the initial operating current.

[0087] Specifically, when the air conditioner filter is not clogged, the fan speed of the outdoor unit required for the air conditioner with a long duct length to reach the rated air output is higher than the fan speed of the outdoor unit of the air conditioner with a short duct length to reach the rated air output. Since the fan speed of the outdoor unit is associated with the operating current of the fan of the outdoor unit (for example, positively correlated), the embodiment of the present disclosure can determine the duct length based on the initial operating current of the outdoor unit fan.

[0088] Optionally, determining the duct length according to the initial operating current includes: determining a duct length coefficient; and determining the duct length according to the duct length coefficient based on the initial operating current.

[0089] Specifically, the length of the air duct is determined according to the above-mentioned initial operating current.

[0090] Optionally, calculate the duct length factor as follows:

[0091] N=(k7×I 3 +k8×I 2 -k9)×I2

[0092] Among them, N is the duct length coefficient, I2 is the initial operating current, k7 is the seventh coefficient, k8 is the eighth coefficient, and k9 is the ninth coefficient.

[0093] It should be noted that, for air conditioners of different models, the seventh coefficient k7, the eighth coefficient k8 and the ninth coefficient k9 used to calculate the air duct length coefficient N are different.

[0094] For example, taking an air conditioner with a rated speed of 955 rpm as an example, its seventh coefficient K7 is 0.4135, the eighth coefficient K8 is 12.914, and the ninth coefficient K9 is 743.95. That is, the calculation formula of the air duct length coefficient of the air conditioner is: N = (0.4135 × I 3 +12.914×I 2 -743.95)×I2.

[0095] Optionally, based on the initial operating current, the duct length is determined according to the duct length coefficient, including calculating the duct length in the following manner:

[0096] M=N×I2+k6

[0097] Among them, M is the duct length, I2 is the initial operating current, k6 is the sixth coefficient, and N is the duct length coefficient.

[0098] It should be noted that, for air conditioners of different models, the sixth coefficient k6 used to calculate the air duct length is different.

[0099] For example, taking an air conditioner with a rated speed of 955 rpm as an example, the sixth coefficient k6 is 1743.7. That is, the calculation formula of the air duct length of the air conditioner is: M=N×I2+1743.7.

[0100] S405: The processor determines a target calculation formula according to the fan speed and the air duct length of the outdoor unit.

[0101] S406: The processor calculates the current dirtiness and blockage rate of the filter according to a target calculation formula based on the steady-state operating current and the air volume of the indoor unit.

[0102] In the disclosed embodiment, the air duct length is calculated based on the initial operating current of the outdoor unit fan when the air conditioner is initially powered on and the air conditioner is controlled to operate at the rated air volume. Since the filter of the air conditioner is usually not dirty or clogged when the air conditioner is initially powered on, the air duct length of the air conditioner calculated based on the parameters obtained when the filter is initially powered on is relatively accurate. In this way, the accuracy of the target calculation formula subsequently determined based on the air duct length is improved, thereby improving the accuracy of calculating the current dirtiness and clogging rate of the air conditioner filter.

[0103] Optionally, after determining the current dirtiness and blockage rate of the filter, the method further includes: when the current dirtiness and blockage rate is greater than or equal to a first threshold value and less than a second threshold value, issuing a prompt message that the filter needs to be cleaned; or when the current dirtiness and blockage rate is greater than or equal to the second threshold value, issuing a prompt message that the air conditioner has a dirty filter blockage fault, and controlling the air conditioner to stop running; wherein the second threshold value is greater than the first threshold value.

[0104] Specifically, when the current dirty and clogged rate of the air conditioner filter is greater than or equal to the first threshold value and less than the second threshold value, it indicates that the air conditioner filter is dirty and clogged, but the impact on the operation of the air conditioner is small. Therefore, in this case, the air conditioner can be controlled to keep running and a prompt message that the filter needs to be cleaned can be sent to the user.

[0105] Specifically, when the current dirty and blocked rate of the air conditioner filter is greater than or equal to the second threshold, it indicates that the air conditioner is dirty and blocked, and the impact on the operation of the air conditioner is relatively large. If the air conditioner is operated under this condition for a long time, it may cause damage to the air conditioner's compressor, outdoor unit fan and other components. Therefore, in the above case, it is necessary to send a prompt message to the user that the air conditioner has a dirty and blocked fault, and it is necessary to control the air conditioner to stop running. In this way, the risk of damage to the air conditioner components is reduced.

[0106] The present disclosure provides a method for determining the dirty and blocked rate of an air conditioner filter. Figure 5As shown, the method includes:

[0107] S501, the processor obtains the air volume of the indoor unit, the stable operation current of the outdoor fan, and the fan speed of the outdoor unit when the air conditioner is running smoothly.

[0108] S502: The processor obtains the length of the air duct of the air conditioner.

[0109] S503: The processor determines a target calculation formula according to the fan speed and the air duct length of the outdoor unit.

[0110] S504: The processor calculates the current dirty and blocked rate of the filter according to a target calculation formula based on the steady-state operating current and the air output of the indoor unit.

[0111] S505: The processor adjusts the fan speed of the outdoor unit according to the current dirt and blockage rate.

[0112] Specifically, when the filter of the air conditioner is dirty and clogged, the air output in the room of the air conditioner will not be able to meet the needs of the user, resulting in that after the air conditioner is turned on, it will take a long time for the indoor temperature to reach the temperature required by the user.

[0113] Specifically, the loss of the indoor unit's air intake compared to the air outlet can be determined based on the current dirty and blocked rate of the filter. Based on the loss, it can be determined how much the speed needs to be increased so that the indoor unit's air volume reaches the standard air volume. Therefore, in the disclosed embodiment, the fan speed of the outdoor unit can be adjusted based on the current dirty and blocked rate of the filter.

[0114] In the disclosed embodiment, when the air conditioner is clogged with dirt, the fan speed of the outdoor unit is adjusted according to the current dirtiness and clogging rate of the filter. In this way, even when the filter of the air conditioner is clogged with dirt, the air volume of the indoor unit of the air conditioner can meet the needs of the user, thereby speeding up the temperature adjustment speed of the air conditioner and improving the user experience.

[0115] Combination Figure 6 As shown, an embodiment of the present disclosure provides a device 600 for determining the dirty and blocked rate of an air conditioner filter, and the device 600 for determining the dirty and blocked rate of an air conditioner filter includes: a processor (processor) 601 and a memory (memory) 602. Optionally, the device may also include a communication interface (Communication Interface) 603 and a bus 604. Among them, the processor 601, the communication interface 603, and the memory 602 can communicate with each other through the bus 604. The communication interface 603 can be used for information transmission. The processor 601 can call the logical instructions in the memory 602 to execute the method for determining the dirty and blocked rate of the air conditioner filter of the above embodiment.

[0116] In addition, the logic instructions in the memory 602 described above may be implemented in the form of software functional units and when sold or used as independent products, may be stored in a computer-readable storage medium.

[0117] The memory 602 is a computer-readable storage medium that can be used to store software programs and computer executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 601 executes the function application and data processing by running the program instructions / modules stored in the memory 602, that is, the method for determining the dirty and blocked rate of the air conditioner filter in the above embodiment is implemented.

[0118] The memory 602 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 602 may include a high-speed random access memory and may also include a non-volatile memory.

[0119] Combination Figure 1 As shown, an embodiment of the present disclosure provides an air conditioner 10, including: a device body 100, and the above-mentioned device 600 for determining the dirty and blocked rate of the air conditioner filter. The device 600 for determining the dirty and blocked rate of the air conditioner filter is installed on the device body 100. The installation relationship described here is not limited to placement inside the product, but also includes installation connections with other components of the air conditioner 10, including but not limited to physical connections, electrical connections or signal transmission connections. It can be understood by those skilled in the art that the device 600 for determining the dirty and blocked rate of the air conditioner filter can be adapted to a feasible air conditioner 10, thereby realizing other feasible embodiments.

[0120] An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured to execute the above-mentioned method for determining the dirty and blocked rate of an air conditioner filter.

[0121] The computer-readable storage medium mentioned above may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0122] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiment of the present disclosure. The aforementioned storage medium may be a non-transient storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes, or a transient storage medium.

[0123] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible changes. Unless explicitly required, separate components and functions are optional, and the order of operation may vary. The parts and features of some embodiments may be included in or replace the parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates, the singular forms of "a", "an" and "the" are intended to include plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of listings containing one or more associated ones. In addition, when used in the present application, the term "comprise" and its variants "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method or device comprising the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

[0124] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods for each specific application to implement the described functions, but such implementations should not be considered to exceed the scope of the embodiments of the present disclosure. The technicians may clearly understand that, for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0125] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units can be only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present disclosure may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit.

[0126] The flowchart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to the embodiment of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. In the description corresponding to the flowchart and the block diagram in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in a different order from the order disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified functions or actions, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A method for determining the dirty and blocked rate of an air conditioner filter, characterized in that: include: When the air conditioner is running smoothly, the air volume of the indoor unit, the stable operating current of the outdoor unit fan and the fan speed of the outdoor unit are obtained; Get the air duct length of the air conditioner; Determine the target calculation formula based on the fan speed and air duct length of the outdoor unit; Based on the steady-state operating current and the air volume of the indoor unit, the current dirty and blocked rate of the filter is calculated according to the target calculation formula.

2. The method according to claim 1, characterized in that According to the fan speed and duct length of the outdoor unit, determine the target calculation formula, including: Based on the first mapping relationship, multiple groups of formula coefficients corresponding to the air duct length are screened out from the coefficient database; Based on the second mapping relationship, a target formula coefficient corresponding to the fan speed is selected from the multiple groups of formula coefficients; Determine the target calculation formula based on the target formula coefficient.

3. The method according to claim 2, characterized in that The target formula coefficients include a first coefficient, a second coefficient, a third coefficient, a fourth coefficient and a fifth coefficient; The target calculation formula is as follows: Among them, K is the current dirtiness and clogging rate of the filter, I1 is the stable operating current of the outdoor unit fan, Q is the air output of the indoor unit, k1 is the first coefficient, k2 is the second coefficient, k3 is the third coefficient, k4 is the fourth coefficient, and k5 is the fifth coefficient.

4. The method according to any one of claims 1 to 3, characterized in that Obtaining the air duct length of the air conditioner includes: When the air conditioner is initially powered on, the outdoor unit fan is controlled to operate at the rated air output; Obtain the initial operating current of the outdoor unit fan during operation; Determine the duct length based on the initial operating current.

5. The method according to claim 4, characterized in that Determine the duct length based on the initial operating current, including: Determine the duct length factor; Based on the initial operating current, determine the duct length according to the duct length factor.

6. The method according to claim 5, characterized in that Based on the initial operating current, determine the duct length according to the duct length factor, including calculating the duct length as follows: M=N×I2+k6 Among them, M is the duct length, I2 is the initial operating current, k6 is the sixth coefficient, and N is the duct length coefficient.

7. The method according to claim 5, characterized in that Calculate the duct length factor as follows: N=(k7×I 3 +k8×I 2 -k9)×I2 Among them, N is the duct length coefficient, I2 is the initial operating current, k7 is the seventh coefficient, k8 is the eighth coefficient, and k9 is the ninth coefficient.

8. The method according to any one of claims 1 to 3, characterized in that After calculating the current dirtiness and clogging rate of the filter screen according to the target calculation formula, the method further includes: Adjust the fan speed of the outdoor unit according to the current dirt and blockage rate.

9. A device for determining the dirty and blocked rate of an air conditioner filter, comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to execute the method for determining the dirty and blocked rate of the air conditioner filter as described in any one of claims 1 to 8 when running the program instructions.

10. An air conditioner, characterized in that: include: Equipment body; The device for determining the dirty and blocked rate of the air conditioner filter as described in claim 9 is installed on the device body.

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