CN108444041B - Self-cleaning control method for air conditioner and air conditioner - Google Patents
Self-cleaning control method for air conditioner and air conditioner Download PDFInfo
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- CN108444041B CN108444041B CN201810152132.4A CN201810152132A CN108444041B CN 108444041 B CN108444041 B CN 108444041B CN 201810152132 A CN201810152132 A CN 201810152132A CN 108444041 B CN108444041 B CN 108444041B
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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
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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
- F24F11/62—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
- F24F11/65—Electronic processing for selecting an operating mode
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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
Abstract
The invention belongs to the technical field of air conditioners and aims to solve the problem that the existing air conditioner is easy to frequently execute a self-cleaning mode due to misjudgment by judging the single condition of the current of an indoor unit fan. Therefore, the invention provides a self-cleaning control method for an air conditioner and the air conditioner, wherein the self-cleaning control method comprises the following steps: when the air conditioner is in heating operation, acquiring a current average value in the current month, a current average value in the previous month, a current value at the current month set time and a current value at the previous month set time of the indoor unit fan; and respectively calculating to obtain a first attenuation value, a second attenuation value, a third attenuation value and a fourth attenuation value, and judging whether to execute a self-cleaning mode on the indoor unit according to the first attenuation value, the second attenuation value, the third attenuation value and the fourth attenuation value. The invention prevents the air conditioner from frequently executing the self-cleaning mode due to the misjudgment caused by the fluctuation of the current of the fan of the indoor unit.
Description
Technical Field
The invention belongs to the technical field of air conditioners, and particularly provides a self-cleaning control method for an air conditioner and the air conditioner.
Background
The air conditioner is a device capable of refrigerating/heating the indoor, and as time goes on, the dust deposition on the indoor unit and the outdoor unit of the air conditioner increases gradually, and after the dust deposition accumulates to a certain degree, a large amount of bacteria can be bred, and especially when the indoor air flows through the indoor unit, a large amount of dust and bacteria can be carried, so that the air conditioner needs to be cleaned in time.
In the prior art, the cleaning mode of the air conditioner comprises manual cleaning and self-cleaning of the air conditioner, time and labor are wasted by adopting the manual cleaning, all parts of the air conditioner need to be disassembled and cleaned, and all the parts need to be reassembled after the cleaning is finished. Therefore, many air conditioners have adopted a self-cleaning mode, for example, patent publication No. CN107525209A discloses a self-cleaning control method for an air conditioner, which specifically includes detecting a current operation mode of the air conditioner, and if the current operation mode of the air conditioner is a non-cooling mode, adjusting the air conditioner to a cooling mode; detecting the rotating speed of a motor of an indoor unit fan of the air conditioner and a first current value of the motor under the rotating speed; and comparing the first current value of the motor at the rotating speed with a first preset current value at the rotating speed, and if the first current value is less than or equal to the first preset current value, starting a self-cleaning mode of the air conditioner and executing self-cleaning treatment of the heat exchanger of the indoor unit. That is to say, the above patent uses the fan current of the indoor unit to determine whether to execute the self-cleaning of the indoor unit, however, in the operation process of the air conditioner, the fan current of the indoor unit may change continuously, even generate large fluctuation, when the fan current of the indoor unit is reduced more when fluctuating, the air conditioner may have misjudgment, that is, the air conditioner executes the self-cleaning mode when the indoor unit of the air conditioner is not required to be self-cleaned, which may cause the air conditioner to frequently start the self-cleaning mode, which may ensure the cleanliness of the air conditioner, but may cause the waste of energy. Therefore, the air conditioner is easy to frequently execute the self-cleaning mode due to misjudgment by judging the single condition of the fan current of the indoor unit of the air conditioner.
Therefore, there is a need in the art for a new self-cleaning control method for an air conditioner and an air conditioner to solve the above problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problem that the conventional air conditioner is easy to frequently execute a self-cleaning mode due to misjudgment by judging a single condition of a fan current of an indoor unit, the present invention provides a self-cleaning control method for an air conditioner, the air conditioner comprises an indoor unit, the self-cleaning control method comprises: when the air conditioner is in heating operation, acquiring the current average value of the current fan of the indoor unit in the current month, the current average value of the current fan in the previous month, the current value of the current set time in the current month and the current value of the current set time in the previous month; calculating a first attenuation value of the average value of the current fan current in the current month relative to the average value of the current fan current in the previous month; calculating a second attenuation value of the average value of the fan current of the previous month relative to the average value of the fan current of the previous month; calculating a third attenuation value of the current value at the set moment in the current month relative to the average value of the fan current in the previous month; calculating a fourth attenuation value of the current value of the last month set moment relative to the average value of the fan current of the big last month; and judging whether to execute a self-cleaning mode on the indoor unit according to the first attenuation value, the second attenuation value, the third attenuation value and the fourth attenuation value.
In a preferred embodiment of the above self-cleaning control method, the step of determining whether to execute the self-cleaning mode on the indoor unit according to the first attenuation value, the second attenuation value, the third attenuation value, and the fourth attenuation value includes: subtracting the first attenuation value from the second attenuation value to obtain a first difference value, and comparing the first difference value with a first preset value; subtracting the fourth attenuation value from the third attenuation value to obtain a second difference value, and comparing the second difference value with a second preset value; and judging whether to execute a self-cleaning mode on the indoor unit or not according to the comparison result.
In a preferred embodiment of the above self-cleaning control method, the step of determining whether to execute the self-cleaning mode on the indoor unit according to the comparison result includes: and if the first difference value is greater than the first preset value and the second difference value is greater than the second preset value, performing a self-cleaning mode on the indoor unit.
In a preferred embodiment of the above self-cleaning control method, the step of determining whether to execute the self-cleaning mode on the indoor unit according to the comparison result further includes: and if the first difference value is not greater than the first preset value or the second difference value is not greater than the second preset value, the self-cleaning mode is not executed on the indoor unit.
In a preferred technical solution of the above self-cleaning control method, the current value at the set time of the month is a real-time current value of the month.
In a preferred technical solution of the above self-cleaning control method, the current value at the previous month set time is a current value of a time corresponding to the real-time current value of the current month in the previous month.
In a preferred embodiment of the above self-cleaning control method, the step of determining whether to execute the self-cleaning mode on the indoor unit according to the first attenuation value, the second attenuation value, the third attenuation value, and the fourth attenuation value further includes: and if the execution times of the step of subtracting the first attenuation value from the second attenuation value to obtain a first difference value and comparing the first difference value with a first preset value reach preset times, executing a self-cleaning mode on the indoor unit.
In a preferred technical solution of the above self-cleaning control method, the self-cleaning control method further includes: and if the running time of the air conditioner reaches the set time, executing a self-cleaning mode on the indoor unit.
In another aspect, the present invention provides an air conditioner including a controller configured to be capable of performing the above-described self-cleaning control method.
As can be understood by those skilled in the art, in a preferred embodiment of the present invention, during heating operation of the air conditioner, a first attenuation value of the average value of the fan current in the current month relative to the average value of the fan current in the previous month is calculated, a second attenuation value of the average value of the fan current in the previous month relative to the average value of the fan current in the previous month is calculated, a third attenuation value of the current value at the current month setting time relative to the average value of the fan current in the previous month is calculated, a fourth attenuation value of the current value at the previous month setting time relative to the average value of the fan current in the previous month is calculated, then the first attenuation value and the second attenuation value are subtracted to obtain a first difference value, and the first difference value is compared with a first preset value; subtracting the fourth attenuation value from the third attenuation value to obtain a second difference value, and comparing the second difference value with a second preset value; and judging whether to execute a self-cleaning mode on the indoor unit or not according to the comparison result. Compared with the technical scheme of comparing the real-time current of the fan of the indoor unit with the preset value in the prior art, the method and the device can not greatly reduce the average current value even if the fan current of the indoor unit fluctuates accidentally, and the gray condition of the air conditioner needs a longer process, so the accuracy of judging the gray condition of the indoor unit of the air conditioner can be improved by comparing the attenuation condition of the current in the current month relative to the current in the previous month and the attenuation condition of the current in the previous month relative to the current in the previous month, and the air conditioner can not have the condition of frequently executing the self-cleaning mode due to the misjudgment caused by the fluctuation of the fan current of the indoor unit.
Further, on the basis of the above control method, the present invention provides another control method, that is, when the execution times of the step of subtracting the first attenuation value from the second attenuation value to obtain the first difference value and comparing the first difference value with the first preset value reaches the preset times, the self-cleaning mode is executed to the indoor unit. By the control mode, when the fan of the indoor unit is in fault/is detected to have deviation and the current is not reduced all the time, the air conditioner can still judge the time for entering the self-cleaning mode by calculating the execution times of the step of subtracting the first attenuation value from the second attenuation value and comparing the first difference with the first preset value, so that the situation that the self-cleaning mode is not executed all the time as the air conditioner cannot meet the condition that the first difference is larger than the first preset value and the second difference is larger than the second preset value is avoided.
Furthermore, on the basis of the two control modes, the invention further provides a control mode for judging whether to execute the self-cleaning mode or not by judging whether the running time of the air conditioner reaches the set time or not, and through the control mode, when the current of the fan of the indoor unit is detected to be in failure, the opportunity of entering the self-cleaning mode can still be judged by the running time of the air conditioner, so that the situation that the self-cleaning mode is not executed all the time because the air conditioner cannot execute the self-cleaning mode through the first control mode and the second control mode is avoided.
In addition, the air conditioner further provided by the invention on the basis of the technical scheme has the technical effect of the self-cleaning control method due to the adoption of the self-cleaning control method, and compared with the existing air conditioner, the air conditioner can prevent the situation that the air conditioner frequently executes the self-cleaning mode due to the misjudgment caused by the fluctuation of the current of the fan of the indoor unit.
Drawings
FIG. 1 is a flow chart of a self-cleaning control method of the present invention;
fig. 2 is a flow chart of an embodiment of the self-cleaning control method of the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the present invention has been described with reference to an indoor unit of an air conditioner, since the indoor unit and the outdoor unit of the air conditioner have a symmetrical structure, the principle of the present invention is also applicable to the case where the outdoor unit performs self-cleaning during cooling operation of the air conditioner, and at this time, the fan current of the indoor unit in the determination condition is replaced with the fan current of the outdoor unit.
The problem that the existing air conditioner frequently executes the self-cleaning mode due to misjudgment is easily caused by judging the single condition of the current of the fan of the indoor unit based on the background technology. The invention provides a self-cleaning control method for an air conditioner and the air conditioner, aiming at preventing the air conditioner from frequently executing a self-cleaning mode due to misjudgment caused by the fluctuation of the current of a fan of an indoor unit.
Specifically, the air conditioner of the present invention includes an indoor unit, and as shown in fig. 1, the self-cleaning control method of the present invention includes: when the air conditioner is in heating operation, acquiring the current average value of the current fan of the indoor unit in the current month, the current average value of the current fan in the previous month, the current value of the current set time in the current month and the current value of the current set time in the previous month; calculating a first attenuation value of the average value of the current fan current in the current month relative to the average value of the current fan current in the previous month; calculating a second attenuation value of the average value of the fan current of the previous month relative to the average value of the fan current of the previous month; calculating a third attenuation value of the current value at the set moment in the current month relative to the average value of the fan current in the previous month; calculating a fourth attenuation value of the current value of the last month set moment relative to the average value of the fan current of the big last month; and judging whether to execute a self-cleaning mode on the indoor unit according to the first attenuation value, the second attenuation value, the third attenuation value and the fourth attenuation value. The current month setting time may be the current day, and the previous month setting time may be a day corresponding to the current day in the previous month, for example, if the current day is the first day of the current month, the current month setting time is the first day of the current month, and the previous month setting time is the first day of the previous month, a person skilled in the art may flexibly set the specific time of the time in practical application, as long as the air conditioner can determine whether to execute the self-cleaning mode on the indoor unit by setting the time. It should be noted that the current of the fan of the indoor unit can directly reflect the dust deposition degree of the air conditioner, because the load of the fan is determined at a certain rotation speed, when the load of the fan is increased at the same rotation speed, and accordingly, the current of the fan is decreased, it is indicated that the wind resistance of the fan is increased, that is, the dust deposition on the indoor unit is performed, and the more serious the dust deposition is, the smaller the current of the fan is, so the dust deposition degree of the indoor unit of the air conditioner can be fully determined according to the current of the fan.
Preferably, as shown in fig. 2, the step of determining whether to perform the self-cleaning mode on the indoor unit according to the first attenuation value, the second attenuation value, the third attenuation value, and the fourth attenuation value includes: subtracting the first attenuation value (recorded as a) from the second attenuation value (recorded as a1) to obtain a first difference value (recorded as B, | a-a1|), and comparing the first difference value with a first preset value; subtracting the third attenuation value (marked as C) from the fourth attenuation value (marked as C1) to obtain a second difference value (marked as D, | C-C1|), and comparing the second difference value with a second preset value; and judging whether to execute a self-cleaning mode on the indoor unit or not according to the comparison result. The step of judging whether to execute the self-cleaning mode to the indoor unit according to the comparison result comprises the following steps: if the first difference value is greater than a first preset value and the second difference value is greater than a second preset value, a self-cleaning mode is executed on the indoor unit; and if the first difference value is not greater than the first preset value or the second difference value is not greater than the second preset value, the self-cleaning mode is not executed on the indoor unit. The first preset value can be 0.1A, the second preset value can be 0.1A, namely when | A-A1| > 0.1A and | C-C1| > 0.1A, the air conditioner executes a self-cleaning mode on the indoor unit; when | A-A1| ≦ 0.1A or | C-C1| ≦ 0.1A, the air conditioner does not perform the self-cleaning mode for the indoor unit. Of course, this is not limiting, and the first preset value and the second preset value may also be other values, and a person skilled in the art may flexibly set specific values of the first preset value and the second preset value in practical applications, as long as whether the self-cleaning mode needs to be performed on the indoor unit can be determined by setting the first preset value and the second preset value.
In one possible embodiment, the current month setting time is the same day (and the same day is the second day of the current month), the previous month setting time is the second day of the previous month, a first attenuation value a of the average value of the fan current of the current month with respect to the average value of the fan current of the previous month is calculated, a second attenuation value a1 of the average value of the fan current of the previous month with respect to the average value of the fan current of the big previous month is calculated, a third attenuation value C of the real-time current value of the current month with respect to the average value of the fan current of the previous month is calculated, a fourth attenuation value C1 of the current value of the second day of the previous month with respect to the average value of the fan current of the big previous month is calculated, a and a1 and C1 are compared finally, if A, A1, C and C1 satisfy the formulae | a-a1| > 0.1A and | C-1 | 0.1A, which indicates that the indoor unit of the air conditioner, if A, A1, C and C1 satisfy the formula | A-A1| ≦ 0.1A or | C-C1| ≦ 0.1A, it indicates that the indoor unit of the air conditioner is not or is not seriously dusted, and the self-cleaning mode for the indoor unit is not temporarily performed.
Preferably, the step of determining whether to perform the self-cleaning mode on the indoor unit according to the first attenuation value, the second attenuation value, the third attenuation value and the fourth attenuation value further includes: and if the execution times of the step of subtracting the first attenuation value from the second attenuation value to obtain a first difference value and comparing the first difference value with a first preset value reach preset times, executing a self-cleaning mode on the indoor unit. The preset times can be set by a person skilled in the art through an experimental manner, or can be set through an empirical manner, as long as the air conditioner can execute the self-cleaning mode through the demarcation point determined by the preset times. For example, the preset number of times may be 5, that is, when the number of times of performing the step of subtracting the first attenuation value from the second attenuation value to obtain the first difference value and comparing the first difference value with the first preset value reaches 5, the air conditioner immediately and automatically performs the self-cleaning mode.
Preferably, the self-cleaning control method of the present invention further comprises: and if the running time of the air conditioner reaches the set time, executing a self-cleaning mode on the indoor unit. The setting time may be set experimentally or empirically by a person skilled in the art, as long as the air conditioner can execute the self-cleaning mode through the demarcation point determined by the setting time. For example, the set time may be 10h (hours), that is, when the operation time of the air conditioner reaches 10h, the air conditioner automatically performs the self-cleaning mode immediately.
Further, the air conditioner of the present invention further includes a controller configured to be able to perform the above-described self-cleaning control method. Namely, the controller can prevent the air conditioner from the condition that the air conditioner frequently executes the self-cleaning mode due to the misjudgment caused by the fluctuation of the current of the fan of the indoor unit.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (5)
1. A self-cleaning control method for an air conditioner including an indoor unit, the self-cleaning control method comprising:
when the air conditioner is in heating operation, acquiring the current average value of the current fan of the indoor unit, the current average value of the previous fan, the current value of the current set time and the current value of the previous set time of the current month;
calculating a first attenuation value of the average value of the current fan current in the current month relative to the average value of the current fan current in the previous month;
calculating a second attenuation value of the average value of the fan current of the previous month relative to the average value of the fan current of the previous month;
calculating a third attenuation value of the current value at the set moment in the current month relative to the average value of the fan current in the previous month;
calculating a fourth attenuation value of the current value of the last month set moment relative to the average value of the fan current of the big last month;
subtracting the first attenuation value from the second attenuation value to obtain a first difference value, and comparing the first difference value with a first preset value;
subtracting the fourth attenuation value from the third attenuation value to obtain a second difference value, and comparing the second difference value with a second preset value;
if the first difference value is greater than a first preset value and the second difference value is greater than a second preset value, a self-cleaning mode is executed on the indoor unit;
and if the first difference is not greater than a first preset value or the second difference is not greater than a second preset value, not executing a self-cleaning mode on the indoor unit.
2. The self-cleaning control method of claim 1, wherein the current value at the current month set time is a real-time current value of the current month.
3. The self-cleaning control method according to claim 2, wherein the current value at the previous month set time is a current value at a time corresponding to the real-time current value of the current month in the previous month.
4. The self-cleaning control method of claim 1,
and if the execution times of the step of subtracting the first attenuation value from the second attenuation value to obtain a first difference value and comparing the first difference value with a first preset value reach preset times, executing a self-cleaning mode on the indoor unit.
5. An air conditioner comprising a controller, characterized in that the controller is configured to be able to perform the self-cleaning control method of any one of claims 1 to 4.
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| JP3480414B2 (en) * | 2000-03-13 | 2003-12-22 | 日本電気株式会社 | Dust detector |
| CN102519118A (en) * | 2011-12-29 | 2012-06-27 | Tcl空调器(中山)有限公司 | Method and device for automatic reminding of cleanness of air conditioner |
| CN103925675B (en) * | 2014-03-27 | 2016-08-17 | 广东美的制冷设备有限公司 | Air-conditioning enters the determination methods of defrosting mode, judgment means and air-conditioning |
| CN105004013A (en) * | 2015-08-04 | 2015-10-28 | 珠海格力电器股份有限公司 | Air-conditioning indoor unit filter screen filth blockage detection method and air-conditioning system control method |
| CN106016597A (en) * | 2016-05-25 | 2016-10-12 | 广东美的暖通设备有限公司 | Air conditioner and control method and device thereof |
| CN106705376B (en) * | 2017-01-04 | 2020-02-04 | 青岛海尔空调器有限总公司 | Self-cleaning method for indoor unit of air conditioner |
| CN107525209A (en) * | 2017-07-13 | 2017-12-29 | 青岛海尔空调器有限总公司 | Air conditioner automatically cleaning control method and device |
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Effective date of registration: 20200911 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Co-patentee after: QINGDAO HAIER (JIAOZHOU) AIR CONDITIONER Co.,Ltd. Patentee after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. |
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Effective date of registration: 20201102 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Patentee after: QINGDAO HAIER (JIAOZHOU) AIR CONDITIONER Co.,Ltd. Patentee after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Patentee before: QINGDAO HAIER (JIAOZHOU) AIR CONDITIONER Co.,Ltd. |