CN108444038B - Self-cleaning control method for air conditioner - Google Patents
Self-cleaning control method for air conditioner Download PDFInfo
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- CN108444038B CN108444038B CN201810152137.7A CN201810152137A CN108444038B CN 108444038 B CN108444038 B CN 108444038B CN 201810152137 A CN201810152137 A CN 201810152137A CN 108444038 B CN108444038 B CN 108444038B
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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
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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
- F24F2110/00—Control inputs relating to air properties
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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. To this end, the present invention provides a self-cleaning control method for an air conditioner, the self-cleaning control method including: when the air conditioner operates in a refrigerating mode, acquiring the temperature of a coil pipe of an indoor unit, the dew point temperature of air, a plurality of fan current values of the indoor unit within the current month preset time and a plurality of fan current values of the indoor unit within the previous month preset time; calculating a first average value according to a plurality of fan current values of the indoor unit within the preset time of the current month; calculating a second average value according to a plurality of fan current values of the indoor unit in the last month preset time; and judging whether to execute a self-cleaning mode on the indoor unit according to the coil temperature of the indoor unit, the dew point temperature of the air, the first average value and the second average value. The invention can make the air conditioner execute the self-cleaning mode under reasonable conditions.
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.
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, the above patent uses the fan current of the indoor unit to determine whether to perform self-cleaning of the indoor unit, however, in the process of cooling operation of the air conditioner, condensation may occur in the indoor unit of the air conditioner, and the fan current of the indoor unit may be affected after condensation occurs in the indoor unit, that is, the fan current of the indoor unit may be reduced due to condensation of the air conditioner or dust deposition of the air conditioner if it cannot be determined by only a single condition of the fan current of the indoor unit that the current of the indoor unit is reduced to the end, and if the fan current of the indoor unit is reduced due to condensation of the indoor unit, the air conditioner may still perform self-cleaning on the indoor unit without dust deposition of the indoor unit, which may cause 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 to solve the above-mentioned 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 operates in a refrigerating mode, acquiring the temperature of a coil pipe of an indoor unit, the dew point temperature of air, a plurality of fan current values of the indoor unit within the current month preset time and a plurality of fan current values of the indoor unit within the previous month preset time; calculating a first average value according to a plurality of fan current values of the indoor unit within the preset time of the current month; calculating a second average value according to a plurality of fan current values of the indoor unit in the last month preset time; and judging whether to execute a self-cleaning mode on the indoor unit according to the coil temperature of the indoor unit, the dew point temperature of the air, the first average value and the second average value.
In the preferred technical solution 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 coil temperature of the indoor unit, the dew point temperature of the air, the first average value and the second average value includes: if the temperature of the coil pipe of the indoor unit is lower than the dew point temperature of the air, calculating the attenuation value of the first average value relative to a first standard current value and the attenuation value of the second average value relative to a second standard current value; comparing the difference between the attenuation value of the second average value relative to the second standard current value and the attenuation value of the first average value relative to the first standard current value with a first 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 difference value is greater than the first preset value, executing 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 difference value is not greater than the first preset value, not executing the self-cleaning mode on the indoor unit.
In the preferred technical solution 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 coil temperature of the indoor unit, the dew point temperature of the air, the first average value and the second average value includes: if the temperature of the coil of the indoor unit is greater than or equal to the dew point temperature of the air, calculating an attenuation value of the first average value relative to a first standard current value and an attenuation value of the second average value relative to a second standard current value; comparing the difference between the attenuation value of the second average value relative to the second standard current value and the attenuation value of the first average value relative to the first standard current 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 difference value is greater than a second preset value, executing 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 difference value is not greater than the second preset value, not executing the self-cleaning mode on the indoor unit.
In the preferred technical solution 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 coil temperature of the indoor unit, the dew point temperature of the air, the first average value and the second average value further includes: and if the execution times of the step of comparing the difference value between the attenuation value of the second average value relative to the second standard current value and the attenuation value of the first average value relative to the first standard current value with the first preset value reach the first preset times, executing the self-cleaning mode on the indoor unit.
In the preferred technical solution 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 coil temperature of the indoor unit, the dew point temperature of the air, the first average value and the second average value further includes: and if the execution times of the step of comparing the difference value between the attenuation value of the second average value relative to the second standard current value and the attenuation value of the first average value relative to the first standard current value with a second preset value reach the second preset time, executing the self-cleaning mode on the indoor unit.
In a preferred technical solution of the above self-cleaning control method, the first preset value is greater than the second preset value.
As can be understood by those skilled in the art, in the preferred embodiment of the present invention, when the air conditioner is in the cooling operation, it is first determined whether the indoor unit generates condensation, then a first average value is calculated according to a plurality of fan current values of the indoor unit within a preset time of the month, a second average value is calculated according to a plurality of fan current values of the indoor unit within a preset time of the month, and finally an attenuation value of the first average value with respect to a first standard current value is calculated (the first standard current value is preferably an average value calculated according to a plurality of fan current values of the indoor unit within the first preset time when the air conditioner is in the heating operation of the month), and an attenuation value of the second average value with respect to the second standard current value is calculated (the second standard current value is preferably an average value calculated according to a plurality of fan current values of the indoor unit within the first preset time when the air conditioner is in the heating operation of, finally, comparing the difference value between the attenuation value of the second average value relative to the second standard current value and the attenuation value of the first average value relative to the first standard current value with a preset value; and judging whether to execute a self-cleaning mode on the indoor unit or not according to the comparison result. Through the arrangement, the air conditioner can execute the self-cleaning mode under a reasonable condition no matter the air conditioner generates condensation or does not generate condensation, and the condition that the air conditioner is judged to be ash-deposited due to condensation of the indoor unit and the self-cleaning mode is frequently executed to cause energy waste can be avoided.
Further, on the basis of the above control method, the present invention provides another control method, that is, when the number of execution times of the step of "comparing the difference between the attenuation value of the second average value with respect to the second standard current value and the attenuation value of the first average value with respect to the first standard current value with the first preset value" reaches the first preset number of times, the self-cleaning mode is executed to the indoor unit; and when the execution times of the step of comparing the difference value between the attenuation value of the second average value relative to the second standard current value and the attenuation value of the first average value relative to the first standard current value with a second preset value reach the second preset time, executing a self-cleaning mode on the indoor unit. By the control mode, when the fan of the indoor unit is in failure/has deviation in detection, 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 comparing the difference value between the attenuation value of the second average value relative to the second standard current value and the attenuation value of the first average value relative to the first standard current value with the first preset value under the condition that the indoor unit generates condensation, and can still judge the time for entering the self-cleaning mode by calculating the execution times of the step of comparing the difference value between the attenuation value of the second average value relative to the second standard current value and the attenuation value of the first average value relative to the first standard current value with the second preset value under the condition that the indoor unit generates no condensation, so that the air conditioner can execute the self-cleaning mode according to the second control mode, 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 is avoided.
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 self-cleaning of the outdoor unit during the heating operation of the air conditioner, and at this time, the fan current of the indoor unit is replaced by the fan current of the outdoor unit and the coil temperature of the indoor unit is replaced by the coil temperature 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, aiming at enabling the air conditioner to execute a self-cleaning mode under a reasonable condition, thereby avoiding the situation that the air conditioner is judged to be ash-deposited due to condensation of an indoor unit and the energy is wasted due to frequent execution of the self-cleaning mode.
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 operates in a refrigerating mode, acquiring the temperature of a coil pipe of an indoor unit, the dew point temperature of air, a plurality of fan current values of the indoor unit within the current month preset time and a plurality of fan current values of the indoor unit within the previous month preset time; calculating a first average value according to a plurality of fan current values of the indoor unit within the preset time of the current month; calculating a second average value according to a plurality of fan current values of the indoor unit in the last month preset time; and judging whether to execute a self-cleaning mode on the indoor unit according to the coil temperature of the indoor unit, the dew point temperature of the air, the first average value and the second average value. The coil temperature of the indoor unit can be acquired through the coil temperature sensor of the indoor unit, and the dew point temperature of air is acquired through the air dew point temperature sensor. In addition, the preset time may be 1 hour, or 1 day, or 5 days, etc., and a person skilled in the art may flexibly set the duration of the preset time in practical application, as long as whether to execute the self-cleaning mode on the indoor unit can be determined by the first average value calculated in the preset time of the current month and the second average value calculated in the preset time of the previous month. 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 coil temperature of the indoor unit, the dew point temperature of the air, the first average value, and the second average value includes: if the coil temperature of the indoor unit is less than the dew point temperature of the air, calculating an attenuation value (marked as A) of the first average value relative to a first standard current value and an attenuation value (marked as A1) of the second average value relative to a second standard current value; comparing the difference between the attenuation value of the second average value with respect to the second standard current value and the attenuation value of the first average value with respect to the first standard current value with a first preset value (i.e., comparing a with a 1); 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 difference value is larger than a first preset value, a self-cleaning mode is executed on the indoor unit; and if the difference value is not greater than the first preset value, not executing the self-cleaning mode on the indoor unit. It should be noted that, in the technical description of the present invention, "the self-cleaning mode is not performed" may be understood as not immediately performing the self-cleaning mode, i.e., performing the self-cleaning mode with a delay. In such a way, firstly, whether condensation is generated in the indoor unit of the air conditioner is judged by comparing the coil temperature of the indoor unit with the dew point temperature of air, when the coil temperature of the indoor unit is lower than the dew point temperature of the air, water vapor in the air can be pre-cooled on the indoor unit to generate condensation, and the fan current of the indoor unit of the air conditioner can be reduced to a certain extent due to the generation of the condensation, so that the first preset value can be 0.2A, namely when | A-A1| is greater than 0.2A, the air conditioner executes a self-cleaning mode on the indoor unit; when the absolute value of A-A1 is less than or equal to 0.2A, the air conditioner does not execute a self-cleaning mode on the indoor unit. Of course, this is not limiting, and the first preset value may also be other values, and those skilled in the art may flexibly set the specific value of the first 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 under the condition that the indoor unit generates condensation. In addition, the first standard current value is preferably an average value calculated according to the acquired current values of the plurality of fans of the indoor unit within a first preset time when the air conditioner is operated for heating in the month; the second standard current value is preferably an average value calculated according to the acquired current values of the plurality of fans of the indoor unit within the first preset time during the heating operation of the air conditioner in the previous month. Of course, the first standard current value and the second standard current value may be other values, such as standard values obtained by a person skilled in the art through experiments before the air conditioner is shipped from a factory or empirical values set through experience.
In a possible implementation manner, condensation is generated on the indoor unit of the air conditioner, the duration of the preset time is 1 day, a second average value is obtained by calculating a plurality of fan current values of the indoor unit on the last day of the previous month, a second standard current value is obtained by calculating a plurality of fan current values of the indoor unit on the first day of the previous month, an attenuation value A1 of the second average value relative to the second standard current value is obtained, a first standard current value is obtained by calculating a plurality of fan current values of the indoor unit on the first day of the previous month, a first average value is obtained by calculating a plurality of fan current values of the indoor unit on the current day of the previous month, an attenuation value A of the first average value relative to the first standard current value is obtained, and finally A and A1 are compared, if A and A1 satisfy the formula | A-A1 > 0.2A, it is indicated that the indoor unit is seriously grayed, the indoor unit needs, if A and A1 satisfy the formula | A-A1| ≦ 0.2A, it indicates that the indoor unit of the air conditioner is not or is not seriously dusted, and the self-cleaning mode of the indoor unit is not temporarily performed.
Preferably, as shown in fig. 2, the step of determining whether to perform the self-cleaning mode on the indoor unit according to the coil temperature of the indoor unit, the dew point temperature of the air, the first average value, and the second average value includes: if the temperature of the coil of the indoor unit is greater than or equal to the dew point temperature of the air, calculating an attenuation value of the first average value relative to a first standard current value and an attenuation value of the second average value relative to a second standard current value; comparing the difference between the attenuation value of the second average value relative to the second standard current value and the attenuation value of the first average value relative to the first standard current 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 difference value is larger than a second preset value, a self-cleaning mode is executed on the indoor unit; and if the difference value is not greater than the second preset value, not executing the self-cleaning mode on the indoor unit. In such a way, firstly, whether condensation occurs in the indoor unit of the air conditioner is judged by comparing the coil temperature of the indoor unit with the dew point temperature of air, when the coil temperature of the indoor unit is not less than the dew point temperature of the air, no condensation occurs on the indoor unit of the air conditioner, and the fan current of the indoor unit is not influenced by the condensation, so that the second preset value can be 0.1A, namely when | A-A1| is more than 0.1A, the air conditioner executes a self-cleaning mode on the indoor unit; when the absolute value of A-A1 is less than or equal to 0.1A, the air conditioner does not execute a self-cleaning mode on the indoor unit. Of course, this is not limiting, and the second preset value may also be other values, and those skilled in the art may flexibly set the specific value of 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 second preset value under the condition that the indoor unit does not generate condensation. In addition, in order to consider the influence of condensation on the fan current of the indoor unit when the indoor unit generates condensation, the first preset value should be always set to be greater than the second preset value.
In a possible embodiment, no condensation is generated on the indoor unit of the air conditioner, the duration of the preset time is 1 day, a second average value is obtained by calculating a plurality of fan current values of the indoor unit on the last day of the previous month, a second standard current value is obtained by calculating a plurality of fan current values of the indoor unit on the first day of the previous month, an attenuation value A1 of the second average value relative to the second standard current value is obtained, a first standard current value is obtained by calculating a plurality of fan current values of the indoor unit on the first day of the previous month, a first average value is obtained by calculating a plurality of fan current values of the indoor unit on the current day of the previous month, an attenuation value A of the first average value relative to the first standard current value is obtained, and finally A and A1 are compared, if A and A1 satisfy the formula | A-A1 > | 0.1A, which indicates that the indoor unit is more seriously grayed, the indoor unit needs, if A and A1 satisfy the formula | A-A1| ≦ 0.1A, it indicates that the indoor unit of the air conditioner is not or is not seriously dusted, and the self-cleaning mode of 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 coil temperature of the indoor unit, the dew point temperature of the air, the first average value, and the second average value further includes: and if the execution times of the step of comparing the difference value between the attenuation value of the second average value relative to the second standard current value and the attenuation value of the first average value relative to the first standard current value with the first preset value reach the first preset times, executing the self-cleaning mode on the indoor unit. The first 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 first preset times. For example, the first preset number of times may be 5, that is, when the number of times of performing the step of "comparing the difference between the attenuation value of the second average value with respect to the second standard current value and the attenuation value of the first average value with respect to the first standard current value with the first preset value" reaches 5, the air conditioner immediately and automatically performs the self-cleaning mode.
Preferably, the step of determining whether to perform the self-cleaning mode on the indoor unit according to the coil temperature of the indoor unit, the dew point temperature of the air, the first average value, and the second average value further includes: and if the execution times of the step of comparing the difference value between the attenuation value of the second average value relative to the second standard current value and the attenuation value of the first average value relative to the first standard current value with a second preset value reach the second preset time, executing the self-cleaning mode on the indoor unit. The second preset number may be set by a person skilled in the art through an experiment, or may be set through an experience, as long as the air conditioner can execute the self-cleaning mode through the demarcation point determined by the second preset number. For example, the second preset number of times may be 5 times, that is, when the number of times of performing the step of "comparing the difference value between the attenuation value of the second average value with respect to the second standard current value and the attenuation value of the first average value with respect to the first standard current value with the second preset value" reaches 5 times, 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.
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 (3)
1. A self-cleaning control method for an air conditioner including an indoor unit, the self-cleaning control method comprising:
when the air conditioner operates in a refrigerating mode, acquiring the coil temperature of the indoor unit, the dew point temperature of air, a plurality of fan current values of the indoor unit within the preset time of the month and a plurality of fan current values of the indoor unit within the preset time of the month;
calculating to obtain a first average value according to a plurality of fan current values of the indoor unit within preset time of the current month;
calculating to obtain a second average value according to a plurality of fan current values of the indoor unit within the preset time of the last month;
if the coil temperature of the indoor unit is lower than the dew point temperature of the air, calculating an attenuation value of the first average value relative to a first standard current value and an attenuation value of the second average value relative to a second standard current value;
comparing a difference value between an attenuation value of the second average value relative to a second standard current value and an attenuation value of the first average value relative to a first standard current value with a first preset value;
if the difference value is larger than the first preset value, a self-cleaning mode is executed on the indoor unit;
if the difference value is not larger than the first preset value, not executing a self-cleaning mode on the indoor unit;
if the coil temperature of the indoor unit is greater than or equal to the dew point temperature of the air, calculating an attenuation value of the first average value relative to a first standard current value and an attenuation value of the second average value relative to a second standard current value;
comparing the difference between the attenuation value of the second average value relative to a second standard current value and the attenuation value of the first average value relative to a first standard current value with a second preset value;
if the difference value is larger than the second preset value, a self-cleaning mode is executed on the indoor unit;
if the difference value is not larger than the second preset value, not executing a self-cleaning mode on the indoor unit;
the first preset value is greater than the second preset value.
2. The self-cleaning control method of claim 1,
and if the execution times of the step of comparing the difference value between the attenuation value of the second average value relative to the second standard current value and the attenuation value of the first average value relative to the first standard current value with a first preset value reach a first preset time, executing a self-cleaning mode on the indoor unit.
3. The self-cleaning control method of claim 1,
and if the execution times of the step of comparing the difference value between the attenuation value of the second average value relative to the second standard current value and the attenuation value of the first average value relative to the first standard current value with a second preset value reach the second preset time, executing a self-cleaning mode on the indoor unit.
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| JP2012072925A (en) * | 2010-09-28 | 2012-04-12 | Hitachi Appliances Inc | Air conditioning system |
| 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 |
| CN106288144A (en) * | 2016-07-26 | 2017-01-04 | 广东美的暖通设备有限公司 | Air-conditioner and Defrost method 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 |
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2018
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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: 20201104 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. |