Air conditioner filter screen filth blockage detection method and system

Abstract

The invention discloses an air conditioner filter screen filth blockage detection method and system. The method comprises the following steps that the actual operation power and the preset power of an air conditioner motor are obtained; whether the actual operation power of the air conditioner motor is consistent with the preset power of the air conditioner motor or not is judged, if yes, the rotating speed and the rotating speed maintaining time of the air conditioner motor are obtained, and the filth blockage condition of the air conditioner filter screen is judged according to the rotating speed and the rotating speed maintaining time of the air conditioner motor; when the rotating speed of the air conditioner motor is larger than a first preset value and the rotating speed maintaining time of the air conditioner motor is larger than or equal to a second preset value, filth blockage of the air conditioner filter screen is judged. The filter screen filth blockage detection method solves the problem that the traditional method for detecting whether the filter screen is filth-blocked or not only through the accumulated operation time of the air conditioner is easy to cause misjudgment, so that the detection is inaccurate.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning filter clogging detection, and in particular to an air conditioning filter clogging detection method and system. Background Art

[0002] In current air conditioning systems, in order to monitor and evaluate the dirty and blocked condition of the air conditioning filter, a detection method based on the accumulated running time of the air conditioning is generally adopted. This method specifically presets a threshold value of the air conditioning running time. When the actual accumulated running time of the air conditioning reaches or exceeds this threshold, the system will determine that the air conditioning filter may have been dirty and blocked, and then send a reminder to the user to replace or clean the filter. However, this method still has the problem of inaccurate filter blockage detection. For example, in an environment with low dust concentration, the air conditioning filter will be blocked relatively slowly. In this case, when the accumulated running time of the air conditioning reaches the preset threshold, the filter may still maintain a good filtering performance and no obvious dirty and blocked phenomenon will occur, which will lead to misjudgment. Summary of the invention

[0003] In view of the above-mentioned defects, the present invention proposes a method and system for detecting whether an air conditioner filter is dirty or clogged, aiming to solve the problem that the traditional method of detecting whether the filter is dirty or clogged only by the accumulated running time of the air conditioner is prone to misjudgment, thus leading to inaccurate detection.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A method for detecting dirty or blocked air conditioner filters comprises the following steps:

[0006] Step S1: obtaining the actual operating power and preset power of the air conditioner motor;

[0007] Step S2: determining whether the actual operating power of the air-conditioning motor is consistent with the preset power of the air-conditioning motor. If not, step S3 is not executed; if consistent, step S3 is executed;

[0008] Step S3: obtaining the rotation speed and rotation speed maintenance time of the air-conditioning motor, and judging the dirtiness and blockage of the air-conditioning filter according to the rotation speed and rotation speed maintenance time of the air-conditioning motor;

[0009] When the speed of the air-conditioning motor is greater than a first preset value, and the speed maintenance time of the air-conditioning motor is greater than or equal to a second preset value, it is determined that the air-conditioning filter is dirty and clogged; when the speed of the air-conditioning motor is greater than the first preset value, and the speed maintenance time of the air-conditioning motor is less than the second preset value, it is determined that the air-conditioning filter is not dirty and clogged; when the speed of the air-conditioning motor is less than or equal to the first preset value, it is determined that the air-conditioning filter is not dirty and clogged.

[0010] Preferably, the method further includes the following steps: when the number of times the air conditioning filter is continuously detected to be dirty and blocked is greater than or equal to a third preset value, a prompt signal is generated.

[0011] Preferably, the following steps are also included: in step S1, the preset power of the air-conditioning motor is a sequence of several preset values; in step S2, the following sub-steps are specifically included: comparing the power of the air-conditioning motor with the preset values ​​in the preset power of the air-conditioning motor one by one.

[0012] Another aspect of the present application provides an air conditioning filter dirty blockage detection system, the system comprising:

[0013] The first acquisition module is used to obtain the actual operating power and preset power of the air conditioner motor;

[0014] A first judgment module is used to judge whether the actual operating power of the air-conditioning motor is consistent with the preset power of the air-conditioning motor. If not, the second acquisition module and the second judgment module are not executed; if consistent, the second acquisition module and the second judgment module are executed;

[0015] The second acquisition module is used to acquire the speed of the air conditioner motor and the speed maintenance time;

[0016] The second judgment module is used to judge the dirtiness and blockage of the air-conditioning filter according to the rotation speed of the air-conditioning motor and the speed maintenance time; when the rotation speed of the air-conditioning motor is greater than the first preset value, and the speed maintenance time of the air-conditioning motor is greater than or equal to the second preset value, it is determined that the air-conditioning filter is dirty and blocked; when the rotation speed of the air-conditioning motor is greater than the first preset value, and the speed maintenance time of the air-conditioning motor is less than the second preset value, it is determined that the air-conditioning filter is not dirty and blocked; when the rotation speed of the air-conditioning motor is less than or equal to the first preset value, it is determined that the air-conditioning filter is not dirty and blocked.

[0017] Preferably, it also includes a generation module, which is used to generate a prompt signal when the number of times the air conditioning filter is continuously detected to be dirty and blocked is greater than or equal to a third preset value.

[0018] Preferably, in the first acquisition module, the preset power of the air-conditioning motor is a sequence of several preset values; the first judgment module includes a comparison submodule, which is used to compare the power of the air-conditioning motor with the preset values ​​in the preset power of the air-conditioning motor one by one.

[0019] The technical solution provided by the embodiments of the present application may have the following beneficial effects:

[0020] In this solution, we first determine whether the actual operating power of the air conditioner motor is consistent with the preset power of the air conditioner motor. If they are consistent, we will continue to obtain the speed of the air conditioner motor and the speed maintenance time, and determine the dirty and blocked condition of the air conditioner filter based on the speed of the air conditioner motor and the speed maintenance time. Compared with the traditional detection method that only determines the cumulative running time of the air conditioner, this solution uses a secondary judgment detection method, which can effectively prevent misjudgment and improve the accuracy of air conditioner filter dirty and blocked detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The invention discloses a flow chart of the steps of a method for detecting a dirty or clogged air conditioner filter. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] A method for detecting dirty or blocked air conditioner filters comprises the following steps:

[0024] Step S1: obtaining the actual operating power and preset power of the air conditioner motor;

[0025] Step S2: determining whether the actual operating power of the air-conditioning motor is consistent with the preset power of the air-conditioning motor. If not, step S3 is not executed; if consistent, step S3 is executed;

[0026] Step S3: obtaining the rotation speed and rotation speed maintenance time of the air-conditioning motor, and judging the dirtiness and blockage of the air-conditioning filter according to the rotation speed and rotation speed maintenance time of the air-conditioning motor;

[0027] When the speed of the air-conditioning motor is greater than a first preset value, and the speed maintenance time of the air-conditioning motor is greater than or equal to a second preset value, it is determined that the air-conditioning filter is dirty and clogged; when the speed of the air-conditioning motor is greater than the first preset value, and the speed maintenance time of the air-conditioning motor is less than the second preset value, it is determined that the air-conditioning filter is not dirty and clogged; when the speed of the air-conditioning motor is less than or equal to the first preset value, it is determined that the air-conditioning filter is not dirty and clogged.

[0028] A method for detecting dirty and blocked air conditioner filters in this solution is as follows: Figure 1As shown, the first step is to obtain the power and preset power of the air-conditioning motor. In this embodiment, the preset power is 2500W. When the air conditioner enters the filter dirty blockage detection mode, it is first necessary to collect the actual operating power of the air-conditioning motor and compare it with the pre-set power for the next step of judgment. The second step is to determine whether the actual operating power of the air-conditioning motor is consistent with the preset power of the air-conditioning motor. If not, step S3 is not executed; if consistent, step S3 is executed. In this embodiment, by determining whether the actual operating power of the air-conditioning motor is consistent with the preset power of the air-conditioning motor, it is helpful to detect whether the air-conditioning motor is running according to the preset power. When the air-conditioning motor runs according to the preset power, it proves that the entire air-conditioning system remains in a relatively stable state, which is conducive to ensuring the stability and accuracy of subsequent judgments. The third step is to obtain the speed of the air-conditioning motor and the speed maintenance time, and judge the dirty blockage of the air-conditioning filter according to the speed of the air-conditioning motor and the speed maintenance time; when the speed of the air-conditioning motor is greater than the first preset value, and the speed maintenance time of the air-conditioning motor is greater than or equal to the second preset value, it is determined that the air-conditioning filter is dirty and blocked; when the speed of the air-conditioning motor is greater than the first preset value, and the speed maintenance time of the air-conditioning motor is less than the second preset value, it is determined that the air-conditioning filter is not dirty and blocked; when the speed of the air-conditioning motor is less than or equal to the first preset value, it is determined that the air-conditioning filter is not dirty and blocked. In this embodiment, the first preset value is 1000 rpm, and the second preset value is 10 minutes. When the actual operating power of the air-conditioning motor reaches the preset power and needs to be maintained at the preset power, the current output by the motor will increase, and the torque output by the motor will increase, thereby causing the speed output by the motor to also increase. Therefore, the air-conditioning filter's dirtiness and blockage can be judged by detecting the speed of the air-conditioning motor and the speed maintenance time. When it is detected that the speed of the air-conditioning motor is greater than 1000 rpm and the speed maintenance time of the air-conditioning motor is greater than or equal to 10 minutes, it is determined that the air-conditioning filter is dirty and blocked.

[0029] In this solution, we first determine whether the actual operating power of the air conditioner motor is consistent with the preset power of the air conditioner motor. If they are consistent, we will continue to obtain the speed of the air conditioner motor and the speed maintenance time, and determine the dirty and blocked condition of the air conditioner filter based on the speed of the air conditioner motor and the speed maintenance time. Compared with the traditional detection method that only determines the cumulative running time of the air conditioner, this solution uses a secondary judgment detection method, which can effectively prevent misjudgment and improve the accuracy of air conditioner filter dirty and blocked detection.

[0030] Preferably, the following steps are also included: when the number of times the air conditioning filter is continuously detected to be dirty and blocked is greater than or equal to a third preset value, a prompt signal is generated. In this embodiment, the third preset value is 5 times. When the air conditioning filter is detected to be dirty and blocked for 5 consecutive times, the user is prompted to replace or clean the air conditioning filter in time. In addition, by continuously detecting the dirty and blocked air conditioning filter for multiple times, the random error and systematic error in a single detection can be reduced, thereby improving the accuracy of the detection.

[0031] Preferably, the following steps are also included: in step S1, the preset power of the air-conditioning motor is a sequence of a group of preset values; in step S2, the following sub-steps are specifically included: comparing the power of the air-conditioning motor with the preset values ​​in the preset power of the air-conditioning motor one by one. In this embodiment, since the preset power of the air-conditioning motor is a sequence of a group of preset values ​​and is not a fixed value, by comparing the power of the air-conditioning motor with the preset values ​​in the preset power of the air-conditioning motor one by one, it can be ensured that the air-conditioning motor operates at the optimal efficiency point.

[0032] Another aspect of the present application provides an air conditioning filter dirty blockage detection system, the system comprising:

[0033] The first acquisition module is used to obtain the actual operating power and preset power of the air conditioner motor;

[0034] A first judgment module is used to judge whether the actual operating power of the air-conditioning motor is consistent with the preset power of the air-conditioning motor. If not, the second acquisition module and the second judgment module are not executed; if consistent, the second acquisition module and the second judgment module are executed;

[0035] The second acquisition module is used to acquire the speed of the air conditioner motor and the speed maintenance time;

[0036] The second judgment module is used to judge the dirtiness and blockage of the air-conditioning filter according to the rotation speed of the air-conditioning motor and the speed maintenance time; when the rotation speed of the air-conditioning motor is greater than the first preset value, and the speed maintenance time of the air-conditioning motor is greater than or equal to the second preset value, it is determined that the air-conditioning filter is dirty and blocked; when the rotation speed of the air-conditioning motor is greater than the first preset value, and the speed maintenance time of the air-conditioning motor is less than the second preset value, it is determined that the air-conditioning filter is not dirty and blocked; when the rotation speed of the air-conditioning motor is less than or equal to the first preset value, it is determined that the air-conditioning filter is not dirty and blocked.

[0037] The present invention provides an air conditioning filter dirty and blocked detection system, which realizes the detection of air conditioning filter dirty and blocked through the cooperation of the first acquisition module, the first judgment module, the second acquisition module and the second judgment module. Compared with the traditional detection method of only judging the accumulated running time of the air conditioner, the present invention can effectively prevent misjudgment through the detection method of secondary judgment, thereby improving the accuracy of air conditioning filter dirty and blocked detection.

[0038] Preferably, it also includes a generation module, which is used to generate a prompt signal when the number of times the air conditioning filter is continuously detected to be dirty and blocked is greater than or equal to a third preset value. In this embodiment, by setting the generation module, it is convenient to prompt the user to replace or clean the air conditioning filter in time. In addition, by continuously detecting the dirty and blocked air conditioning filter for multiple times, the random error and systematic error in a single detection can be reduced, thereby improving the accuracy of the detection.

[0039] Preferably, in the first acquisition module, the preset power of the air-conditioning motor is a sequence of a plurality of preset values; the first judgment module includes a comparison submodule, and the comparison submodule is used to compare the power of the air-conditioning motor with the preset values ​​in the preset power of the air-conditioning motor one by one. In this embodiment, by setting the comparison submodule, it is possible to ensure that the air-conditioning motor operates at the optimal efficiency point.

[0040] In addition, each functional unit in each embodiment of the present invention may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0041] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A method for detecting dirty or blocked air conditioner filters, characterized in that: The following steps are involved: Step S1: obtaining the actual operating power and preset power of the air conditioner motor; Step S2: determining whether the actual operating power of the air-conditioning motor is consistent with the preset power of the air-conditioning motor. If not, step S3 is not executed; if consistent, step S3 is executed; Step S3: obtaining the rotation speed and rotation speed maintenance time of the air-conditioning motor, and judging the dirtiness and blockage of the air-conditioning filter according to the rotation speed and rotation speed maintenance time of the air-conditioning motor; When the speed of the air-conditioning motor is greater than a first preset value, and the speed maintenance time of the air-conditioning motor is greater than or equal to a second preset value, it is determined that the air-conditioning filter is dirty and clogged; when the speed of the air-conditioning motor is greater than the first preset value, and the speed maintenance time of the air-conditioning motor is less than the second preset value, it is determined that the air-conditioning filter is not dirty and clogged; when the speed of the air-conditioning motor is less than or equal to the first preset value, it is determined that the air-conditioning filter is not dirty and clogged.

2. The method for detecting dirty or blocked air conditioner filters according to claim 1, characterized in that: The following steps are also included: When the number of times that the air conditioning filter is continuously detected to be dirty and blocked is greater than or equal to a third preset value, a prompt signal is generated.

3. The method for detecting dirty or blocked air conditioner filters according to claim 1, characterized in that: The following steps are also included: In step S1, the preset power of the air-conditioning motor is a sequence of a plurality of preset values; in step S2, the following sub-steps are specifically included: comparing the power of the air-conditioning motor with the preset values ​​in the preset power of the air-conditioning motor one by one.

4. An air conditioning filter dirty blockage detection system, using the air conditioning filter dirty blockage detection method according to any one of claims 1 to 3, characterized in that: The system comprises: The first acquisition module is used to obtain the actual operating power and preset power of the air conditioner motor; A first judgment module is used to judge whether the actual operating power of the air-conditioning motor is consistent with the preset power of the air-conditioning motor. If not, the second acquisition module and the second judgment module are not executed; if consistent, the second acquisition module and the second judgment module are executed; The second acquisition module is used to acquire the speed of the air conditioner motor and the speed maintenance time; The second judgment module is used to judge the dirtiness and blockage of the air-conditioning filter according to the rotational speed of the air-conditioning motor and the speed maintenance time; when the rotational speed of the air-conditioning motor is greater than the first preset value, and the speed maintenance time of the air-conditioning motor is greater than or equal to the second preset value, it is judged that the air-conditioning filter is dirty and blocked; when the rotational speed of the air-conditioning motor is greater than the first preset value, and the speed maintenance time of the air-conditioning motor is less than the second preset value, it is judged that the air-conditioning filter is not dirty and blocked; when the rotational speed of the air-conditioning motor is less than or equal to the first preset value, it is judged that the air-conditioning filter is not dirty and blocked.

5. The air conditioning filter dirty blockage detection system according to claim 4, characterized in that: It also includes a generation module, which is used to generate a prompt signal when the number of consecutive detections that the air conditioning filter is dirty and blocked is greater than or equal to a third preset value.

6. The air conditioning filter dirty blockage detection system according to claim 4, characterized in that: In the first acquisition module, the preset power of the air conditioner motor is a sequence of a set of preset values; The first judgment module includes a comparison submodule, and the comparison submodule is used to compare the power of the air-conditioning motor with the preset values ​​of the preset power of the air-conditioning motor one by one.

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