Control method for air conditioner filter screen detection and air conditioner

Abstract

The invention belongs to the technical field of air conditioners, and particularly provides a control method for air conditioner filter screen detection and an air conditioner. First sensors distributed in the first direction at intervals and second sensors distributed in the second direction at intervals are arranged on the filter screen, and the first sensors and the second sensors are both used for detecting the tension of the filter screen. The control method comprises the following steps: acquiring tension values detected by each first sensor and each second sensor; if the tension values of the first sensor and the second sensor are larger than or equal to the filth blockage threshold value, the first sensor and the second sensor are marked as a first target sensor and a second target sensor respectively; acquiring a cross position of each first target sensor and each second target sensor, and marking the cross position as a dust deposition area; determining whether the filter screen is filth-blocked or not according to the number of the dust accumulation areas; and if the filter screen is filth-blocked, the air conditioner is controlled to execute filth-blocking action.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioners, and specifically provides a control method for air conditioner filter detection and an air conditioner. Background Art

[0002] The indoor unit of an air conditioner generally includes a casing, a heat exchanger, a fan and a filter. The heat exchanger is used to cool / heat the air in the casing, the fan is used to circulate the air inside and outside the casing, and the filter is used to filter the air entering the casing.

[0003] As the air conditioner is used, dust will accumulate on the filter, causing the filter to become dirty and clogged, affecting the air output efficiency of the air conditioner and even affecting the health of the user. For this reason, some air conditioners have the function of detecting the degree of filter dirtiness to remind the user to clean the filter when the filter is dirty.

[0004] Current air conditioners generally detect the degree of filter contamination by detecting wind pressure or pressure. For example, to detect the degree of filter contamination by detecting wind pressure, an air pressure sensor is set on the air outlet side of the filter. When the fan is running at a preset speed, if the value detected by the air pressure sensor is less than a certain air pressure, it means that the filter is dirty and needs to be cleaned.

[0005] For another example, to detect the degree of dirtiness of the filter by detecting pressure, a pressure sensor is provided on the filter. When the fan is running at a preset speed, if the pressure value detected by the pressure sensor is greater than a certain value, it indicates that the filter is dirty and needs to be cleaned.

[0006] However, any existing method for detecting the degree of filter dirtiness can produce general or even biased results, resulting in inaccurate measurement data. For example, air pressure sensors and pressure sensors are usually located at the edge of the filter, and the data they detect can only correspond to the edge of the filter, and cannot accurately correspond to the center area of ​​the filter. Summary of the invention

[0007] One purpose of the present invention is to solve the problem that the detection result of the dirtiness of the filter screen of the existing air conditioner is inaccurate.

[0008] Another object of the present invention is to enable an air conditioner to detect whether its filter is damaged.

[0009] To achieve the above object, the present invention provides, in a first aspect, a control method for detecting an air conditioning filter, wherein the filter is provided with first sensors spaced apart in a first direction and second sensors spaced apart in a second direction, and the first sensors and the second sensors are both used to detect the tension of the filter; the control method comprises:

[0010] Acquire the tension values ​​detected by each of the first sensors and each of the second sensors;

[0011] If there are the first sensor and the second sensor whose pulling force value is greater than or equal to the dirty blockage threshold, the first sensor and the second sensor are recorded as the first target sensor and the second target sensor respectively;

[0012] Obtaining the intersection position of each of the first target sensors and the second target sensors, and recording the intersection position as a dust accumulation area;

[0013] Determining whether the filter screen is dirty or clogged according to the number of the dust accumulation areas;

[0014] If the filter is dirty or clogged, the air conditioner is controlled to perform a dirty or clogged action.

[0015] Optionally, the step of determining whether the filter is dirty or clogged according to the number of the dust accumulation areas includes:

[0016] Obtain the number of dust accumulation areas in the main air inlet area of ​​the filter;

[0017] If the number of dust accumulation areas in the main air inlet area reaches a first area threshold, it is determined that the filter is clogged.

[0018] Optionally, the control method further includes:

[0019] In the case where the filter is not blocked by dirt, obtaining the tension values ​​detected by each of the first sensors and each of the second sensors;

[0020] Obtaining all the tension values ​​greater than the tension threshold and recording them as calibrated tension values;

[0021] Obtaining the first sensor and the second sensor corresponding to all the calibrated tension values, and recording them as the first calibrated sensor and the second calibrated sensor respectively;

[0022] The intersection position of each of the first calibration sensors and the second calibration sensors is obtained, and the set of all the intersection positions is recorded as the main air inlet area.

[0023] Optionally, the tension threshold is an average value of all the tension values.

[0024] Optionally, the step of determining whether the filter screen is dirty or clogged according to the number of the dust accumulation areas further includes:

[0025] If the number of dust accumulation areas in the main air inlet area does not reach the first area threshold, increasing the speed of the fan of the air conditioner;

[0026] Determining whether the number of dust accumulation areas in the entire area of ​​the filter screen reaches a second area threshold;

[0027] If the second area threshold is reached, it is determined that the filter is clogged.

[0028] Optionally, if the filter is dirty and blocked, the step of controlling the air conditioner to perform a dirty and blocked action includes:

[0029] If the filter is dirty or clogged, the air conditioner is controlled to perform one of the following actions:

[0030] Send reminder messages to remind users to clean the filter;

[0031] Activate self-cleaning mode.

[0032] Optionally, the control method further includes:

[0033] If there are the first sensor and the second sensor whose tension value is less than or equal to the damage threshold, it is determined that the filter is damaged at the intersection of the first sensor and the second sensor.

[0034] Optionally, the first direction is perpendicular to the second direction.

[0035] Optionally, in the first direction, the first sensor extends from one end of the filter to the other end; in the second direction, the second sensor extends from one end of the filter to the other end.

[0036] In a second aspect, the present invention provides an air conditioner, comprising a processor and a memory, wherein a machine executable program is stored in the memory, and when the processor executes the machine executable program, the control method described in any one of the first aspects can be implemented.

[0037] Based on the foregoing description, those skilled in the art can understand that, in the aforementioned technical solution of the present invention, by obtaining the tension values ​​detected by each first sensor and each second sensor, and when there is a first sensor and a second sensor whose tension value is greater than or equal to the dirty blocking threshold, the first sensor and the second sensor are respectively recorded as the first target sensor and the second target sensor, so as to obtain the intersection position of each first target sensor and the second target sensor, and record the intersection position as the dust accumulation area. Then, according to the number of dust accumulation areas, it is determined whether the filter is dirty and blocked, and if the filter is dirty and blocked, the air conditioner is controlled to perform the dirty blocking action.

[0038] It can be seen from this that the present invention divides the filter into multiple unit areas through the first sensor and the second sensor that are staggered horizontally and vertically. When the tension value detected by the first sensor and the second sensor is greater than or equal to the dirt and blockage threshold, the unit area at the intersection of the first sensor and the second sensor is recorded as the dust accumulation area. Therefore, the present invention can perform dirt and blockage detection on each unit area of ​​the filter respectively, and the detection accuracy is higher than the existing detection accuracy.

[0039] Furthermore, the present invention determines whether the filter is dirty or clogged based on the number of dust accumulation areas, so that the present invention can make an overall consideration of all dust accumulation areas to determine whether the filter is dirty or clogged, and the determination of the filter is more accurate. This effectively avoids the situation where the air conditioner still cannot remind the user to clean the filter when the filter is already seriously dirty and clogged.

[0040] Furthermore, the present invention determines that the filter is clogged when the number of dust accumulation areas in the main air inlet area reaches the first area threshold; the number of dust accumulation areas in the main air inlet area does not reach the first area threshold, and the air conditioner fan speed is increased to ensure the air volume of the air conditioner; and then it is determined whether the number of dust accumulation areas in the entire area of ​​the filter has reached the second area threshold; and when the second area threshold is reached, it is determined that the filter is clogged. It can be seen that the present invention can prioritize whether the filter in the main air inlet area of ​​the filter is clogged while ensuring the air volume supply of the air conditioner, and clean the filter when it occurs.

[0041] Furthermore, when there are a first sensor and a second sensor with a tension value less than or equal to a damage threshold, the present invention determines that the filter is damaged at the intersection of the first sensor and the second sensor, so that the air conditioner can detect the damage of its filter, thereby avoiding the problem of failure of detection of the air conditioner filter due to the damage of the air conditioner filter and ensuring the health of the user.

[0042] Other beneficial effects of the present invention will be described in detail below in conjunction with the accompanying drawings so that those skilled in the art can more clearly understand the improved purposes, features and advantages of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solution of the present invention, some embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that the same reference numerals indicate the same or similar components or parts in different drawings; the drawings of the present invention are not necessarily drawn to scale.

[0044] In the attached figure:

[0045] Figure 1 It is a schematic block diagram of the structure of an air conditioner provided by the present invention;

[0046] Figure 2 It is a structural schematic diagram of a filter screen of an air conditioner provided by the present invention;

[0047] Figure 3 yes Figure 2 Radial schematic diagram of the middle filter;

[0048] Figure 4 yes Figure 2 Axial schematic diagram of the middle filter;

[0049] Figure 5 is a flowchart of the steps of a control method for air conditioning filter detection in some embodiments of the present invention;

[0050] Figure 6 is a flow chart of steps for determining whether a filter screen is dirty or blocked in some embodiments of the present invention;

[0051] Figure 7 is a flowchart of steps for controlling an air conditioner to perform a dirty blocking action in some embodiments of the present invention;

[0052] Figure 8 is a partial step flow chart of a control method for air conditioning filter detection in some embodiments of the present invention;

[0053] Fig. 9 is a partial step flow chart of a control method for air conditioner filter detection in other embodiments of the present invention;

[0054] Fig.10 A schematic block diagram of the structure of another air conditioner provided by the present invention. DETAILED DESCRIPTION

[0055] It should be understood by those skilled in the art that the embodiments described below are only some embodiments of the present invention, rather than all embodiments of the present invention, and these embodiments are intended to explain the technical principles of the present invention, rather than to limit the protection scope of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should still fall within the protection scope of the present invention.

[0056] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0057] Furthermore, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In addition, it should be noted that in the description of the present invention, the terms "cold" and "heat" are two descriptions of the same physical state. That is, the higher the "cold" of a certain target object (such as an evaporator, air, condenser, etc.), the lower the "heat" it has, and the lower the "cold" it has, the higher the "heat" it has. A certain target object will release "heat" while absorbing "cold", and will absorb "heat" while releasing "cold". A certain target object stores "cold" or "heat" to keep the current temperature of the target object. "Refrigeration" and "heat absorption" are two descriptions of the same physical phenomenon, that is, a certain target object (such as an evaporator) will absorb heat while cooling.

[0059] Finally, it should be noted that in the description of the present invention, each functional module can be a physical module composed of multiple structures, components or electronic components, or a virtual module composed of multiple programs; each functional module can be a module that exists independently of each other, or a module divided according to the function of an integral module. Those skilled in the art should understand that, under the premise of being able to implement the technical solution described in the present invention, no matter how the composition, implementation and positional relationship of each functional module change, they will not deviate from the technical principle of the present invention, and therefore should fall within the protection scope of the present invention.

[0060] like Figure 1 As shown, in the present invention, the air conditioner 100 includes a filter 110 and a fan 120 , the filter 110 is used to filter the air entering the air conditioner 100 , and the fan 120 is used to drive the air to circulate on both sides of the air conditioner 100 .

[0061] In addition, the air conditioner 100 also includes other components such as a casing and a heat exchanger. Since these other components of the air conditioner 100 are well known to those skilled in the art and are weakly related to the technical problems and / or technical concepts to be solved by the present invention (directly or indirectly related), they will not be described in detail here.

[0062] Furthermore, in the following description of the present invention, unless otherwise specified, the term "air conditioner" specifically refers to "an indoor unit of an air conditioner".

[0063] In the present invention, the indoor unit of the air conditioner 100 can be a wall mounted unit or a cabinet unit. In addition, those skilled in the art can also set the air conditioner 100 described in the present invention as an integrated air conditioner as needed.

[0064] like Figures 2 to 4 As shown, in the present invention, the filter screen 110 is provided with first sensors 130 spaced apart along a first direction 210 and second sensors 140 spaced apart along a second direction 220 , and both the first sensors 130 and the second sensors 140 are used to detect the tension of the filter screen 110 .

[0065] In the present invention, the first direction 210 and the second direction 220 form an angle, and are preferably perpendicular to each other.

[0066] Furthermore, the first sensor 130 and the second sensor 140 are preferably linear sensors, which may specifically be optical fiber sensors, pressure-sensitive metal wires, pressure-sensitive metal wires, and the like.

[0067] In the present invention, the first sensor 130 and the second sensor 140 can be fixed to the filter screen 110 in any feasible manner, such as bonding, welding, clamping, welding, etc. In addition, those skilled in the art can also form the first sensor 130 and the second sensor 140 and the filter screen 110 into a whole by injection molding as needed.

[0068] like Figure 3 and Figure 4 As shown, in the present invention, the filter 110 has a main air inlet area 111 and a side air inlet area 112. During the rotation of the fan 120 of the air conditioner 100, the airflow flowing through the main air inlet area 111 is greater than the airflow flowing through the side air inlet area 112. In other words, the ventilation capacity of the main air inlet area 111 is greater than the ventilation capacity of the side air inlet area 112.

[0069] In the present invention, the main air inlet area 111 and the side air inlet area 112 can be determined by measuring the wind speed at each area of ​​the filter 110 when the air conditioner 100 is running, or can be determined by some other embodiments described below.

[0070] like Figure 3 As shown, in the present invention, each first sensor 130 intersects with each second sensor 140, thereby forming an intersection position, and each intersection position corresponds to a unit area. The unit area is centered at its intersection position.

[0071] In other words, in the present invention, all the first sensors 130 and all the second sensors 140 form i intersection positions, the entire area of ​​the filter screen 110 is divided into i unit areas, and the center of each unit area corresponds to an intersection position of a first sensor 130 and a second sensor 140, respectively. Wherein, i is a natural number.

[0072] Furthermore, the boundaries of two adjacent unit areas may overlap, so that the collection of all unit areas forms the entire area of ​​the filter screen 110. The boundaries of two adjacent unit areas may not overlap, and there may be a gap, so that the collection of all unit areas is smaller than the entire area of ​​the filter screen 110.

[0073] Furthermore, in the present invention, each first sensor 130 is assigned coordinates in the first direction 210, and each second sensor 140 is also assigned coordinates in the second direction 220, so as to locate the unit area at the intersection of the two sensors through the coordinates of a first sensor 130 and the coordinates of a second sensor 140.

[0074] Furthermore, in the present invention, the filter screen 110 is not limited to Figures 2 to 4 The arc shape shown in FIG. 1 may also be any feasible shape such as a straight plate shape.

[0075] Refer to the following Figures 5 to 7 , to describe in detail the control method for air conditioning filter detection in some embodiments of the present invention.

[0076] like Figure 5 As shown, in some embodiments of the present invention, the control method for air conditioning filter detection includes:

[0077] Step S110 , obtaining the tension values ​​detected by each first sensor 130 and each second sensor 140 .

[0078] The first sensor 130 and the second sensor 140 are as follows: Figures 2 to 4 As described above, the first sensor 130 and the second sensor 140 can also be deformed when the filter screen 110 is deformed by wind, and thus detect the tension value.

[0079] Step S120 : If there are first sensors 130 and second sensors 140 whose tension values ​​are greater than or equal to the dirt and blockage threshold, the first sensors 130 and the second sensors 140 are recorded as first target sensors and second target sensors, respectively.

[0080] Among them, when the tension value of a first sensor 130 or a second sensor 140 is greater than or equal to the dirt blockage threshold, it means that in the area where the first sensor 130 or the second sensor 140 is located, there is at least one unit area that is blocked by dirt, the ventilation capacity is reduced, and the deformation amount becomes larger.

[0081] To this end, the dirty and blocked threshold can be tested multiple times through experiments. When a certain unit area is dirty and blocked, the tension values ​​of the corresponding first sensor 130 and second sensor 140 are detected and used as the dirty and blocked threshold.

[0082] In this embodiment, the dirt blockage threshold is selected from any value between 3 Newtons (mechanical unit) and 8 Newtons, for example, 4 Newtons or 5 Newtons.

[0083] In the present invention, the first sensor 130 and the second sensor 140 whose tension value is greater than or equal to the dirt and blockage threshold in step S120 are respectively referred to as the first target sensor and the second target sensor for the convenience of the following description.

[0084] Step S130, obtaining the intersection position of each first target sensor and the second target sensor, and recording the intersection position as the dust accumulation area 113 (such as Figure 3 shown).

[0085] As described above, since each first sensor 130 is assigned with coordinates in the first direction 210, and each second sensor 140 is also assigned with coordinates in the second direction 220, the unit area at the intersection of the two target sensors can be located by the coordinates of the first target sensor and the coordinates of the second target sensor, and the unit area is the dust accumulation area 113 (such as Figure 3 shown).

[0086] Step S140 , determining whether the filter screen 110 is dirty or clogged according to the number of dust accumulation areas 113 .

[0087] like Figure 6 As shown, step S140 further includes steps S141 to S142, and optional steps S143 to S145, which are specifically as follows:

[0088] Step S141 , obtaining the number of dust accumulation areas 113 in the main air inlet area 111 of the filter 110 .

[0089] In this embodiment, the size, coordinates, range, etc. of the main air inlet area 111 are known and pre-stored in the air conditioner 100 .

[0090] As described in step S130, each dust accumulation area 113 can be located by the coordinates of the first target sensor and the second target sensor corresponding thereto. Therefore, it is possible to determine whether each dust accumulation area 113 exists within the coordinate range of the main air intake area 111 according to the coordinates of each dust accumulation area 113. If so, it means that the main air intake area 111 contains the dust accumulation area 113. Then, all dust accumulation areas 113 in the main air intake area 111 are counted.

[0091] Step S142: if the number of dust accumulation areas 113 in the main air inlet area 111 reaches a first area threshold, it is determined that the filter 110 is clogged with dirt.

[0092] The number of all unit areas included in the main air inlet area 111 is recorded as M, and the first area threshold is m, then:

[0093] m=k×M.

[0094] Wherein, k is selected from any value between 0.4 and 0.9, and k is further selected from any value between 0.5 and 0.7. For example, k may be 0.5.

[0095] Step S143 , if the number of dust accumulation areas 113 in the main air inlet area 111 does not reach the first area threshold, the rotation speed of the fan 120 of the air conditioner 100 is increased to ensure the air output of the air conditioner 100 .

[0096] Increasing the rotation speed of the fan 120 of the air conditioner 100 may specifically be increasing the rotation speed of the fan 120 of the air conditioner 100 by any feasible value such as 5%, 10%, or 20%.

[0097] Step S144 , determining whether the number of dust accumulation areas 113 in the entire area of ​​the filter screen 110 has reached a second area threshold.

[0098] The number of all unit areas included in the entire area of ​​the filter 110 is recorded as N, and the second area threshold value is n, then:

[0099] n=d×N.

[0100] Wherein, d is selected from any value between 0.7 and 0.95, and d is further selected from any value between 0.75 and 0.85. For example, d may be 0.8.

[0101] Step S145 : if the second area threshold is reached, it is determined that the filter 110 is clogged with dirt, and the entire filter 110 is clogged with dirt.

[0102] Step S150: If the filter 110 is dirty or clogged, the air conditioner 100 is controlled to perform a dirty or clogged action.

[0103] like Figure 7As shown, in some embodiments of the present invention, step S150 further includes:

[0104] Step S151: if the filter 110 is dirty or clogged, control the air conditioner 100 to execute step S152 or step S153.

[0105] Step S152 , sending a reminder message to remind the user to clean the filter 110 .

[0106] Step S153, start the self-cleaning mode.

[0107] In the self-cleaning mode, the spray system inside the air conditioner 100 can spray condensed water, water added by the user, or any other feasible liquid on the filter 110. Since the technical means by which the air conditioner 100 sprays and self-cleans its filter 110 are well known to those skilled in the art, they will not be described in detail here.

[0108] Based on the foregoing description, those skilled in the art can understand that, in some embodiments of the present invention, the filter screen 110 is divided into a plurality of unit areas by means of the first sensor 130 and the second sensor 140 that are staggered horizontally and vertically. When the tension value detected by the first sensor 130 and the second sensor 140 is greater than or equal to the dirt and blockage threshold, the unit area at the intersection of the first sensor 130 and the second sensor 140 is recorded as the dust accumulation area 113. Therefore, the present invention can perform dirt and blockage detection on each unit area of ​​the filter screen 110 respectively, and the detection accuracy is higher than that of the existing detection accuracy.

[0109] Furthermore, whether the filter 110 is dirty or clogged is determined based on the number of dust accumulation areas 113, so that the present invention can make an overall consideration of all dust accumulation areas 113 to determine whether the filter 110 is dirty or clogged, and the determination of the dirty or clogged condition of the filter 110 is more accurate. This effectively avoids the situation where the air conditioner 100 is unable to remind the user to clean the filter 110 when the filter 110 is already seriously dirty or clogged.

[0110] Furthermore, the present invention determines that the filter 110 is clogged with dirt when the number of dust accumulation areas 113 in the main air inlet area 111 reaches the first area threshold; the number of dust accumulation areas 113 in the main air inlet area 111 does not reach the first area threshold, and the rotation speed of the fan 120 of the air conditioner 100 is increased to ensure the air volume of the air conditioner 100; and then determines whether the number of dust accumulation areas 113 in the entire area of ​​the filter 110 has reached the second area threshold; and determines that the filter 110 is clogged with dirt when the second area threshold is reached. It can be seen that the present invention can prioritize whether the filter 110 in the main air inlet area 111 of the filter 110 is clogged with dirt while ensuring the air volume supply of the air conditioner 100, and clean the filter 110 when it occurs, to ensure the air volume of the air conditioner 100.

[0111] It should be noted that the above-mentioned embodiment of the present invention is only a basic embodiment of the present invention. In other embodiments of the present invention, those skilled in the art may also adjust, optimize and configure the schemes and steps in the above-mentioned embodiments as needed to achieve further technical effects. Other embodiments of the present invention different from the above-mentioned embodiments will be described in conjunction with the accompanying drawings hereinafter. Of course, those skilled in the art may also make appropriate modifications to the execution order, operating conditions and quantity of the steps in the embodiments to be described hereinafter according to actual needs. The modified embodiments do not deviate from the technical concept and / or technical principle of the present invention and should still fall within the scope of protection of the present invention.

[0112] like Figure 8 As shown, in some further embodiments of the present invention, compared with some embodiments described above, the control method for air conditioning filter detection further includes:

[0113] Step S210 , when the filter screen 110 is not blocked by dirt, the tension values ​​detected by the first sensors 130 and the second sensors 140 are obtained.

[0114] Specifically, step S210 can be performed when the air conditioner 100 in the home is turned on for the first time, or when it is tested by the manufacturer before leaving the factory, or when the air conditioner 100 is turned on for the first time after the filter 110 is cleaned.

[0115] Step S220, obtaining all tension values ​​greater than the tension threshold value, and recording them as calibrated tension values, for the convenience of subsequent description.

[0116] The tension threshold is the average value of all tension values.

[0117] In addition, those skilled in the art may also set the tension threshold to any other feasible value as needed, for example, setting the tension threshold to any feasible value such as 1.2 times or 1.5 times the average value of all tension values.

[0118] In step S230, the first sensor 130 and the second sensor 140 corresponding to all the calibrated tension values ​​are obtained and are respectively recorded as the first calibrated sensor and the second calibrated sensor to facilitate the following description.

[0119] Step S240 , obtaining the intersection position of each first calibration sensor and the second calibration sensor (please refer to the above description of step S130 for details), and recording the set of all the intersection positions as the main air inlet area 111 .

[0120] Based on the foregoing description, those skilled in the art will appreciate that, in still other embodiments of the present invention, the air conditioner 100 can automatically detect the main air inlet area 111 of the filter 110 based on the first sensors 130 and the second sensors 140 that are staggered horizontally and vertically, and the detection result is more accurate compared to experiments.

[0121] like Fig. 9 As shown, in some other embodiments of the present invention, compared with any of the embodiments described above, after step S110 or step S210, the control method for air conditioning filter detection further includes:

[0122] Step S310 , determining whether there are first sensors 130 and second sensors 140 whose tension values ​​are less than or equal to the damage threshold.

[0123] The damage threshold may be any feasible value, such as 0 Newton, 0.5 Newton, 0.8 Newton, etc.

[0124] Step S320, if there is a first sensor 130 and a second sensor 140 whose tension value is less than or equal to the damage threshold, it is determined that the filter 110 is damaged at the intersection of the first sensor 130 and the second sensor 140, and the air conditioner 100 is controlled to issue a damage information to remind the user to replace the filter 110.

[0125] Based on the foregoing description, those skilled in the art will appreciate that, in other embodiments of the present invention, when there are a first sensor 130 and a second sensor 140 having a tension value less than or equal to a damage threshold, by determining that the filter 110 is damaged at the intersection of the first sensor 130 and the second sensor 140, the air conditioner 100 can detect the damage of its filter 110, thereby avoiding the problem of failure of detection of the air conditioner 100's filter 110 due to damage to the air conditioner 100 and ensuring the health of the user.

[0126] like Fig.10 As shown, the air conditioner 100 of the present invention further includes a processor 150 and a memory 160 , wherein the memory 160 stores a machine executable program 161 , and when the processor 150 executes the machine executable program 161 , the control method described in any of the above embodiments can be implemented.

[0127] The memory 160 may include a memory and a non-volatile memory, and provide execution instructions and data to the processor 150. For example, the memory may be a high-speed random access memory (RAM), and the non-volatile memory may be at least one disk storage.

[0128] The processor 150 is an integrated circuit chip that has the ability to process signals. The processor 150 can be a general-purpose processor, such as a central processing unit (CPU), a network processor (NP), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, microprocessors, and any other conventional processors.

[0129] So far, the technical solution of the present invention has been described in combination with the above multiple embodiments, but it is easy for those skilled in the art to understand that the protection scope of the present invention is not limited to these specific embodiments. Without departing from the technical principles of the present invention, those skilled in the art can split and combine the technical solutions in the above embodiments, and can also make equivalent changes or replacements to the relevant technical features. Any changes, equivalent replacements, improvements, etc. made within the technical concept and / or technical principles of the present invention will fall within the protection scope of the present invention.

Claims

1. A control method for detecting an air conditioning filter, wherein the filter is provided with first sensors spaced apart in a first direction and second sensors spaced apart in a second direction, wherein both the first sensor and the second sensor are used to detect the tension of the filter; the control method comprises: Acquire the tension values ​​detected by each of the first sensors and each of the second sensors; If there are the first sensor and the second sensor whose pulling force value is greater than or equal to the dirty blockage threshold, the first sensor and the second sensor are recorded as the first target sensor and the second target sensor respectively; Obtaining the intersection position of each of the first target sensors and the second target sensors, and recording the intersection position as a dust accumulation area; Determining whether the filter screen is dirty or clogged according to the number of the dust accumulation areas; If the filter is dirty or clogged, the air conditioner is controlled to perform a dirty or clogged action.

2. The control method according to claim 1, wherein: The step of determining whether the filter screen is dirty or blocked according to the number of the dust accumulation areas comprises: Obtain the number of dust accumulation areas in the main air inlet area of ​​the filter; If the number of dust accumulation areas in the main air inlet area reaches a first area threshold, it is determined that the filter is clogged.

3. The control method according to claim 2, further comprising: In the case where the filter is not blocked by dirt, obtaining the tension values ​​detected by each of the first sensors and each of the second sensors; Obtaining all the tension values ​​greater than the tension threshold value and recording them as calibrated tension values; Obtaining the first sensor and the second sensor corresponding to all the calibrated tension values, and recording them as the first calibrated sensor and the second calibrated sensor respectively; The intersection position of each of the first calibration sensors and the second calibration sensors is obtained, and the set of all the intersection positions is recorded as the main air inlet area.

4. The control method according to claim 3, wherein: The tension threshold is an average value of all the tension values.

5. The control method according to claim 3, wherein: The step of determining whether the filter screen is dirty or blocked according to the number of the dust accumulation areas further includes: If the number of dust accumulation areas in the main air inlet area does not reach the first area threshold, increasing the speed of the fan of the air conditioner; Determining whether the number of dust accumulation areas in the entire area of ​​the filter screen reaches a second area threshold; If the second area threshold is reached, it is determined that the filter is clogged.

6. The control method according to any one of claims 1 to 5, wherein: If the filter is dirty and clogged, the step of controlling the air conditioner to perform a dirty and clogged action comprises: If the filter is dirty or clogged, the air conditioner is controlled to perform one of the following actions: Send reminder messages to remind users to clean the filter; Activate self-cleaning mode.

7. The control method according to any one of claims 1 to 5, further comprising: If there are the first sensor and the second sensor whose tension value is less than or equal to the damage threshold, it is determined that the filter is damaged at the intersection of the first sensor and the second sensor.

8. The control method according to any one of claims 1 to 5, wherein: The first direction is perpendicular to the second direction.

9. The control method according to any one of claims 1 to 5, wherein: In the first direction, the first sensor extends from one end of the filter to the other end; In the second direction, the second sensor extends from one end of the filter to the other end.

10. An air conditioner, comprising a processor and a memory, wherein a machine executable program is stored in the memory, and when the processor executes the machine executable program, the control method according to any one of claims 1 to 9 can be implemented.

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