CN111664546A - Air conditioner filth blockage judging method and device, medium and air conditioner - Google Patents
Air conditioner filth blockage judging method and device, medium and air conditioner Download PDFInfo
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- CN111664546A CN111664546A CN202010576798.XA CN202010576798A CN111664546A CN 111664546 A CN111664546 A CN 111664546A CN 202010576798 A CN202010576798 A CN 202010576798A CN 111664546 A CN111664546 A CN 111664546A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/39—Monitoring filter performance
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
Abstract
The invention provides an air conditioner filth blockage judging method, an air conditioner filth blockage judging device, a medium and an air conditioner. The method comprises the following steps: step S1, acquiring the accumulated running time of the air conditioner, and judging whether the accumulated running time exceeds a preset time threshold value; step S2, if yes, after the air conditioner is started, phase current change values of the air conditioner motor at different rotating speeds are obtained; and step S3, obtaining a first preset number of phase current change values, and judging whether the air conditioner is dirty or not according to the first preset number of phase current change values. The phase current of the air conditioner motor is detected after the air conditioner is started every time, and whether the air conditioner is dirty or blocked can be effectively and accurately judged by using the phase current change values of the first preset number.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a dirty blockage judgment method and device for an air conditioner, a medium and the air conditioner.
Background
In an air conditioner, a filter screen is generally used to filter impurities in air, for example, the filter screen is disposed at an air outlet of an indoor unit. After long-term use, the filter screen accumulates a lot of impurities, so that filth blockage often occurs, the air quantity is easy to cause to be small, and the temperature adjusting effect of the air conditioner is poor. For the treatment of filth blockage, manual regular cleaning or regular reminding of a user to clean a filter screen is generally adopted at present, but the filth blockage degree of the actual filter screen cannot be accurately judged. The existing detection and judgment means has misjudgment risks, so that unnecessary cleaning operation is caused.
Disclosure of Invention
The invention mainly aims to provide an air conditioner filth blockage judging method, an air conditioner filth blockage judging device, a medium and an air conditioner, which are used for at least partially solving the technical problems.
In order to solve the above problem, an aspect of the present invention provides a method for determining filth blockage of an air conditioner, including: step S1, acquiring the accumulated running time of the air conditioner, and judging whether the accumulated running time exceeds a preset time threshold value; step S2, if yes, after the air conditioner is started, phase current change values of the air conditioner motor at different rotating speeds are obtained; and step S3, obtaining a first preset number of phase current change values, and judging whether the air conditioner is dirty or not according to the first preset number of phase current change values.
Therefore, after the air conditioner is actually dirty and blocked, the phase current of the air conditioner motor is reduced, so that the phase current of the air conditioner motor is detected after the air conditioner is started every time, and whether the air conditioner is dirty and blocked can be effectively and accurately judged by using the phase current change values of the first preset number.
Optionally, the obtaining phase current change values of the air conditioner motor at different rotation speeds includes: after the angle of the air deflector is fixed at a preset value, phase current change values of the air conditioner motor at different rotating speeds are obtained.
Therefore, the angle of the air deflector is fixed, the interference caused by the air deflector of the air conditioner can be avoided, and the reliability of the dirty blockage judgment result is improved.
Optionally, the obtaining phase current change values of the air conditioner motor at different rotation speeds includes: the method comprises the steps that an air conditioner motor runs at a first instruction rotating speed, a first actual rotating speed of the air conditioner motor is obtained, and when the difference value between the first instruction rotating speed and the first actual rotating speed is smaller than or equal to a preset error threshold value and lasts for a preset time, a first phase current of the air conditioner motor is obtained; enabling the air conditioner motor to operate at a second instruction rotating speed, obtaining a second actual rotating speed of the air conditioner motor, and obtaining a second phase current of the air conditioner motor when the difference value between the second instruction rotating speed and the second actual rotating speed is smaller than or equal to a preset error threshold value and lasts for a preset time; and taking the difference value of the first phase current and the second phase current as the phase current change value.
Therefore, when the actual rotating speed of the motor reaches the specified rotating speed, the phase current is obtained, and the stability and the reliability of the phase current obtaining are ensured.
Optionally, the step S3 includes: step S301, obtaining a first preset number of phase current change values, judging whether the first preset number of phase current change values are gradually reduced, step S302, if so, judging whether the finally obtained second preset number of phase current change values are all smaller than or equal to a preset current threshold value, if so, recording as an effective judgment, step S303, continuously obtaining the phase current change values, repeating the steps S301 and S302, and when the accumulation of the effective judgment times reaches the first preset times, determining that the filth is blocked.
Therefore, whether the phase current is reduced or not is determined, then whether the minimum phase currents are smaller than a preset threshold value or not is determined, and the final filth blockage determination is carried out through the accumulated value of the effective judgment times. The misjudgment caused by data fluctuation is avoided, and the effectiveness, reliability and accuracy of the dirty blocking result are ensured.
Optionally, the step S303 further includes: and continuously acquiring the phase current change value, repeating the steps S301 and S302, and determining dirty blockage when the number of effective judgment times continuously reaches a second preset number.
Therefore, when effective judgment is continuously performed for multiple times, filth blockage can be determined, and effectiveness, reliability and accuracy of a filth blockage judgment result are guaranteed.
Optionally, in step S303, the continuously obtaining the phase current change value includes: and continuously acquiring phase current change values, adding the newly acquired phase current change values into the phase current change values of the first preset number, and correspondingly removing the phase current change value which is acquired earliest in the phase current change values of the original first preset number. In this way, excessive data accumulation is avoided.
Optionally, after determining the filth blockage, sending a prompt message, and clearing the valid determination times.
In another aspect of the present invention, a filth blockage judging device for an air conditioner is further provided, including: the time judgment module is used for acquiring the accumulated running time of the air conditioner and judging whether the accumulated running time exceeds a preset time threshold value; and the dirty blockage judging module is used for acquiring a first preset number of phase current change values and judging whether the air conditioner is dirty and blocked according to the first preset number of phase current change values.
Yet another aspect of the present invention also provides a computer-readable storage medium storing a computer program which, when read and executed by a processor, implements a method as described above.
In another aspect, the present invention provides an air conditioner, including the device for determining filth blockage of an air conditioner.
The air conditioner filth blockage judging device, the computer readable storage medium and the air conditioner have the same advantages as the air conditioner filth blockage judging method, and are not repeated herein.
Drawings
Fig. 1 schematically illustrates a flow chart of a filth blockage determination method for an air conditioner according to an embodiment of the present invention;
fig. 2 is a flowchart schematically illustrating a step S3 in the method for judging filth blockage of an air conditioner according to an embodiment of the present invention;
fig. 3 is a block diagram schematically illustrating an air conditioner filth blockage determination device according to a second embodiment of the present invention.
Detailed Description
In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
An embodiment of the present invention provides a method for determining filth blockage of an air conditioner, and the following description refers to fig. 1 and fig. 2 to describe this embodiment in detail.
The method includes the contents of steps S1-S3:
and step S1, acquiring the accumulated running time of the air conditioner, and judging whether the accumulated running time exceeds a preset time threshold.
In this step, as filth blockage of the filter screen of the air conditioner is likely to occur after the filter screen is used for a period of time, the accumulated operating time of the air conditioner is used as a basis for preliminary judgment, so that repeated subsequent judgment can be avoided when the accumulated operating time of the air conditioner is short and filth blockage does not occur.
And step S2, if yes, after the air conditioner is started each time, phase current change values of the air conditioner motor at different rotating speeds are obtained.
In a feasible manner of the embodiment of the present invention, the step may specifically be that after the air conditioner is turned on each time, the phase current change values of the air conditioner motor at different rotation speeds are obtained after the angle of the air deflector is fixed at the preset value. The angles of the air deflectors are fixed, and then phase currents are detected, so that the interference caused by the air deflector of the air conditioner, the fan blade and the like can be avoided, and the reliability of a dirty blockage judgment result is improved.
The obtaining of the phase current change values of the air conditioning motor at different rotation speeds may specifically include: the method comprises the steps that an air conditioner motor runs at a first instruction rotating speed, a first actual rotating speed of the air conditioner motor is obtained, and when the difference value between the first instruction rotating speed and the first actual rotating speed is smaller than or equal to a preset error threshold value and lasts for a preset time, a first phase current of the air conditioner motor is obtained; enabling the air conditioner motor to operate at a second instruction rotating speed, obtaining a second actual rotating speed of the air conditioner motor, and obtaining a second phase current of the air conditioner motor when the difference value between the second instruction rotating speed and the second actual rotating speed is smaller than or equal to a preset error threshold value and lasts for a preset time; and taking the difference value of the first phase current and the second phase current as the phase current change value.
For example, the air conditioner operates at the instruction rotating speed 1, and when | the instruction rotating speed 1-the first actual rotating speed | Is less than or equal to 20rpm Is detected and the maintaining time t1 Is detected, the phase current Is1 Is recorded; the air conditioner operates according to the instruction rotating speed 2, and when | the instruction rotating speed 2-a second actual rotating speed | Is less than or equal to 20rpm and the maintaining time t1 Is detected, the phase current Is2 Is recorded; phase current change value Δ Is1 Is phase current Is1 and phase current Is 2.
In addition, the obtaining of the phase current change values of the air conditioning motor at different rotation speeds may specifically include: and obtaining phase current change values at every two different rotating speeds and averaging to obtain the phase current change values.
And step S3, obtaining a first preset number of phase current change values, and judging whether the air conditioner is dirty or not according to the first preset number of phase current change values.
In a feasible manner of the embodiment of the present invention, referring to fig. 2, the step S3 can be implemented by the following steps S301 to S304:
step S301, obtaining a first preset number of phase current change values, and determining whether the first preset number of phase current change values gradually decrease.
In the step, for example, the computer is started for n times, wherein n is more than or equal to 2; calculating a phase current change value delta Isn which Is equal to | phase current Isn-phase current Is (n-1) | every time the computer Is started, and recording difference current delta Isl; after n times of starting, n Δ Isn are recorded cumulatively, namely the first preset number is n at the moment. In the present embodiment, n is10 for example, but the value should not form a limitation to the present invention. Thus, 10 Δ Isn, i.e., Δ Is1, Δ Is2, Δ Is3, Δ Is4, Δ Is5, Δ Is6, Δ Is7, Δ Is8, Δ Is9, and Δ Is10 are obtained chronologically. First, it is determined whether there is a trend toward a decrease in the 10 values, because the phase current will decrease when a dirty plug actually occurs. Namely, whether the delta Is1 ≧ delta Is2 ≧ delta Is3 ≧ delta Is4 ≧ delta Is5 ≧ delta Is6 ≧ delta Is7 ≧ delta Is8 ≧ delta Is9 ≧ delta Is10 Is judged.
Step S302, if yes, determining whether the phase current change values of the last obtained second preset number are all less than or equal to a preset current threshold, and if yes, recording as an effective determination.
In this step, for example, it Is determined whether or not Δ Isn ≦ dirty current setting threshold Is _ threshold, Δ Is (n-1) ≦ dirty current setting threshold Is _ threshold, and Δ Is (n-2) ≦ dirty current setting threshold Is _ threshold Is satisfied. In this embodiment, the second preset number may be 3, and at this time, it Is determined whether Δ Is10 Is not less than Is _ threshold, Δ Is9 Is not less than Is _ threshold, and Δ Is8 Is not less than Is _ threshold.
Step S303, continuously acquiring a phase current change value, repeating the steps S301 and S302, and determining dirty blockage when the number of effective judgment times reaches a first preset number; or when the number of times of effective judgment continuously reaches a second preset number of times, determining the filth blockage.
In this step, for example, the first preset number AddCnt may be 20, and the second preset number Cnt1 may be 3; then the indoor filth blockage is judged, and a cleaning reminding prompt is sent to the user. The first preset times and the second preset times can be adjusted according to actual conditions. The obtained Δ Is1, Δ Is2, Δ Is3, Δ Is4, Δ Is5, Δ Is6, Δ Is7, Δ Is8, Δ Is9 and Δ Is10 are obtained in time sequence. Therefore, the number of validity determinations reaching the second preset number in succession means that, for example, both Δ Isn, Δ Is (n +1), and Δ Is (n +2) are validity determinations, and validity determinations are obtained in chronological succession. The number of valid determinations accumulated to the first predetermined number means that, for example, all of Δ Is1, Δ Is4, Δ Is7, Δ Is9, and Δ Is10 are valid determinations.
In addition, in step S303, the continuously acquiring the phase current change value includes: and continuously acquiring phase current change values, adding the newly acquired phase current change values into the phase current change values of the first preset number, and correspondingly removing the phase current change value which is acquired earliest in the phase current change values of the original first preset number. For example, after 10 times of Δ Isn acquisition are cumulatively performed, the determination processes of steps S301 and S302 may be performed, and then the phase current change value Δ Is11 may be continuously acquired, in which case, Δ Is1 may be removed, and the first preset number of phase current change values become Δ Is2, Δ Is3, Δ Is4, Δ Is5, Δ Is6, Δ Is7, Δ Is8, Δ Is9, Δ Is10, and Δ Is 11. The 10 data are reused to perform the determination processes of step S301 and step S302, i.e. a set of detection decision data is formed again, and so on.
It should be noted that, Δ Isn obtained in the embodiment of the present invention is obtained after each time of starting the air conditioner, that is, n times of starting are required to obtain n Δ Isn values. And a group of detection judgment data is formed again in the step S303, so that the filth blockage state can be monitored, and the problem that the previous filth blockage condition cannot be monitored once the device is shut down in the prior art is solved.
And step S304, sending out prompt information after the filth blockage is determined, and clearing the effective judgment times.
After the user cleans the air conditioner, the user can judge again according to the contents of the steps S1-S3 in the method provided by the application, the effective judgment times are cleared, and the judgment after cleaning is not influenced.
Example two
The present embodiment provides an apparatus for determining filth blockage of an air conditioner, and referring to fig. 3, the apparatus 400 includes: the time judgment module 401 is configured to obtain an accumulated operation time of the air conditioner, and judge whether the accumulated operation time exceeds a preset time threshold; a phase current change value obtaining module 402, configured to obtain phase current change values of the air conditioner motor at different rotation speeds after the air conditioner is turned on every time when the determination result of the time determining module is yes, and a dirty block determining module 403, configured to obtain a first preset number of the phase current change values, and determine whether the air conditioner is dirty or not according to the first preset number of the phase current change values.
EXAMPLE III
The present embodiment provides a computer-readable storage medium, which stores a computer program, which when read and executed by a processor, implements the method according to the first embodiment.
Example four
The present embodiment provides an air conditioner, including the filth blockage determining device of the air conditioner according to the second embodiment.
In summary, the phase current of the air conditioner motor is detected after the air conditioner is started each time, and whether the air conditioner is dirty or not can be effectively and accurately judged by using the first preset number of phase current change values. The phase current is detected after the angle of the air deflector is fixed, so that the interference caused by the air deflector of the air conditioner, the fan blade and the like can be avoided, and the reliability of the dirty blockage judgment result is improved. And the invention determines whether the phase current is reduced, then determines whether the minimum phase currents are less than the preset threshold value, and carries out the final dirty blocking determination through the accumulated value of the effective determination times or the continuous multiple effective determination times. The misjudgment caused by data fluctuation is avoided, and the effectiveness, reliability and accuracy of the dirty blocking result are ensured.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. An air conditioner filth blockage judging method is characterized by comprising the following steps:
step S1, acquiring the accumulated running time of the air conditioner, and judging whether the accumulated running time exceeds a preset time threshold value;
step S2, if yes, after each air conditioner is started, phase current change values of the air conditioner motor at different rotating speeds are obtained,
and step S3, obtaining a first preset number of phase current change values, and judging whether the air conditioner is dirty or not according to the first preset number of phase current change values.
2. The method of claim 1, wherein the obtaining phase current change values of the air conditioner motor at different rotation speeds comprises:
after the angle of the air deflector is fixed at a preset value, phase current change values of the air conditioner motor at different rotating speeds are obtained.
3. The method of claim 1, wherein the obtaining phase current change values of the air conditioner motor at different rotation speeds comprises:
the method comprises the steps that an air conditioner motor runs at a first instruction rotating speed, a first actual rotating speed of the air conditioner motor is obtained, and when the difference value between the first instruction rotating speed and the first actual rotating speed is smaller than or equal to a preset error threshold value and lasts for a preset time, a first phase current of the air conditioner motor is obtained;
enabling the air conditioner motor to operate at a second instruction rotating speed, obtaining a second actual rotating speed of the air conditioner motor, and obtaining a second phase current of the air conditioner motor when the difference value between the second instruction rotating speed and the second actual rotating speed is smaller than or equal to a preset error threshold value and lasts for a preset time;
and taking the difference value of the first phase current and the second phase current as the phase current change value.
4. The method according to claim 1, wherein the step S3 includes:
step S301, obtaining a first preset number of phase current change values, judging whether the first preset number of phase current change values are gradually reduced,
step S302, if yes, judging whether the phase current change values of the last acquired second preset number are all smaller than or equal to a preset current threshold value, if yes, recording as an effective judgment,
and step S303, continuously acquiring the phase current change value, repeating the steps S301 and S302, and determining dirty blockage when the accumulated number of effective judgment times reaches a first preset number.
5. The method according to claim 4, wherein the step S303 further comprises:
and continuously acquiring the phase current change value, repeating the steps S301 and S302, and determining dirty blockage when the number of effective judgment times continuously reaches a second preset number.
6. The method according to claim 4 or 5, wherein in step S303, the continuously obtaining the phase current change value comprises:
and continuously acquiring phase current change values, adding the newly acquired phase current change values into the phase current change values of the first preset number, and correspondingly removing the phase current change value which is acquired earliest in the phase current change values of the original first preset number.
7. The method according to claim 4, characterized in that after determining the filth blockage, a prompt message is sent out and the number of valid decisions is cleared.
8. An air conditioner filth blockage judging device, characterized in that the device comprises:
the time judgment module is used for acquiring the accumulated running time of the air conditioner and judging whether the accumulated running time exceeds a preset time threshold value;
a phase current change value obtaining module for obtaining phase current change values of the air conditioner motor at different rotating speeds after the air conditioner is started every time when the judgment result of the time judging module is yes,
and the dirty blockage judging module is used for acquiring the phase current change values of a first preset number and judging whether the air conditioner is dirty blocked or not according to the phase current change values of the first preset number.
9. A computer-readable storage medium, characterized in that it stores a computer program which, when read and executed by a processor, implements the method according to any one of claims 1-7.
10. An air conditioner characterized by comprising the air conditioner filth blockage judging device as claimed in claim 8.
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| CN112414919A (en) * | 2020-11-11 | 2021-02-26 | 厦门浦睿智能电子有限公司 | Method and device for measuring and calculating service life of filter screen of purifier based on working current of direct current motor |
| CN113339936A (en) * | 2021-06-07 | 2021-09-03 | 青岛海尔空调器有限总公司 | Filter screen blockage detection method and device, electronic equipment and storage medium |
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Application publication date: 20200915 |