CN110762744B - Automatic prompting method for cleaning filter screen, control device, storage medium and air conditioner - Google Patents

Automatic prompting method for cleaning filter screen, control device, storage medium and air conditioner Download PDF

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Publication number
CN110762744B
CN110762744B CN201910990238.6A CN201910990238A CN110762744B CN 110762744 B CN110762744 B CN 110762744B CN 201910990238 A CN201910990238 A CN 201910990238A CN 110762744 B CN110762744 B CN 110762744B
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filter screen
inner disc
cleaning
theory
actual measurement
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CN110762744A (en
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蒲彧
谢任强
秦宪
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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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
    • 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
    • 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
    • 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
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature

Abstract

The invention provides an automatic prompting method for cleaning a filter screen, a control device, a storage medium and an air conditioner. The dirty stifled condition that can automated inspection filter screen to confirm whether need give the washing instruction or carry out the filter screen washing action according to the dirty stifled condition of reality of filter screen, do not receive the influence of various environment, wash the suggestion degree of accuracy height, can guarantee the high-efficient operation of air conditioner, can avoid too early or too late clean filter screen again.

Description

Automatic prompting method for cleaning filter screen, control device, storage medium and air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to an automatic prompt method for cleaning a filter screen, a control device, a storage medium and an air conditioner.
Background
The air conditioner filter screen is the device of filtered air in order to prevent impurity such as dust to get into the heat exchanger, the air conditioner is in long-term use, indoor circulating air is when the filter screen, adsorb the interception with the dust particle in the room, adhere on the filter screen surface, a period of time later, the mesh of filter screen is blockked up, can reduce the intake of indoor set, influence the heating or the refrigeration effect of air conditioner, and the filth stifled heat exchanger surface that can make of filter screen produces is dirty, influence the heat exchanger heat transfer, and can breed and deposit dust, mite etc. can cause the pollution to the room air when waiting the air conditioner to send wind, influence user's healthy.
The prior art generally reminds consumers to clean filter screens at regular time, and has the defects that the environments of the consumers are different, the degree difference of the filter screens in the indoor environments is larger, and the consumers are often reminded that the filter screens are clean and do not need to be cleaned or the filter screens are dirty and blocked seriously.
Disclosure of Invention
The invention solves the problem that the filth blockage condition of the filter screen is judged according to the actual running condition of the air conditioner, and a user is automatically reminded to clean the filter screen.
In order to solve the above problems, the present invention provides an automatic prompt method for cleaning a filter screen, a control device, a storage medium and an air conditioner, wherein a theoretical value of the temperature of an indoor unit coil is obtained by detecting the current of a compressor or the current of the whole air conditioner, and is compared with an actual measured value of the temperature of the indoor unit coil, and whether the filter screen is dirty or blocked and whether the filter screen needs to be cleaned is determined according to the comparison result.
The invention provides an automatic prompting method for cleaning a filter screen, which comprises the following steps:
s100, after the filter screen filth blockage self-checking program is started, detecting the current of a compressor or the current I of the whole machine and the temperature T of an outdoor unit coilOuter disk actual measurementAnd the temperature T of the coil pipe of the indoor unitInner disc actual measurement；
S200, according to I, TOuter disk actual measurementA preset reference slope K and a slope calculation formula, thereby obtaining a theoretical value T of the temperature of the coil pipe of the indoor unitTheory of inner disc；
S300, according to the operation mode and T of the air conditionerInner disc actual measurementAnd TTheory of inner discThe size relationship of the filter screen, whether the filter screen is dirty or not and whether a cleaning prompt is required or a filter screen cleaning action is required to be executed.
By the method, the filth blockage condition of the filter screen can be automatically detected, whether a cleaning instruction needs to be given or a filter screen cleaning action needs to be executed or not is determined according to the actual filth blockage condition of the filter screen, the method is not influenced by various environments, the accuracy of cleaning prompt or cleaning action is high, efficient operation of the air conditioner can be guaranteed, and the filter screen can be prevented from being cleaned too early or too late.
Further, the filter screen filth blockage self-checking program needs to be started to meet the following conditions: detecting indoor ambient temperature TIndoor useIf T isIndoor useSatisfies A<TIndoor use<And B, starting a filter screen filth blockage self-checking program.
The value range of A is 24-26 ℃, and the value range of B is 27-30 ℃.
The accuracy of program detection is influenced by too high or too low indoor temperature, so that the filter screen filth blockage self-checking program needs to be started again under the condition that the indoor temperature is within a certain range.
Further, the current of the compressor or the current I of the whole machine and the temperature T of the coil pipe of the outdoor unit are detectedOuter disk actual measurementAnd the temperature T of the coil pipe of the indoor unitInner disc actual measurementThe method also comprises the following steps: detecting outdoor ambient temperature TOutdoorsAccording to TOutdoorsThe frequency of the compressor is determined by the numerical value of the air inlet and outlet fans, so that the compressor runs at the set frequency and the inner and outer fans run at the set rotating speed.
Further, the compressor frequency and the outdoor ambient temperature TOutdoorsThe relationship of (a) to (b) is as follows:
X<ToutdoorsThe set frequency of the compressor is P1；
X<TOutdoors<Y, the set frequency of the compressor is P2；
Y<TOutdoorsThe set frequency of the compressor is P3。
Under the refrigeration mode, the value range of X is 20-28 ℃, the value range of Y is 48-58 ℃, and P1The value range of (A) is 20Hz-40Hz, P2The value range of (A) is 40Hz-70Hz, P3The value range of (A) is 30Hz-60 Hz.
The temperature of the inner and outer coil pipes is abnormal due to overhigh or overlow outdoor environment temperature, the error is large, and the accuracy of filter screen filth blockage judgment is influenced.
Further, the slope calculation formula of step S200 is: k ═ TOuter plate-TInner disc) And I, the slope is positive in the cooling mode, and the slope is negative in the heating mode.
Further, the slope calculation formula of step S200 is:
in the cooling mode, K ═ TOuter plate-TInner disc) I; in heating mode, K ═ TInner disc-TOuter plate)/I。
Further, the compressor current or the complete machine current I is an average current of the air conditioner in a preset time of continuous operation.
The average current is used for calculating the theoretical value of the temperature of the coil pipe of the indoor unit, so that the detection is more accurate, and the false alarm is reduced.
Further, step S300 further includes the steps of:
s310, if the air conditioner is in a refrigeration mode, judging whether a cleaning prompt needs to be given according to the following steps:
S311、Tinner disc actual measurement≥TTheory of inner discThe filter screen is not dirty and needs no cleaning;
S312、Tinner disc actual measurement<TTheory of inner discIf the filter screen is dirty, further judging the dirty degree of the filter screen, and judging whether a cleaning prompt needs to be given according to the dirty degree;
S3121、Ttheory of inner disc-Q<TInner disc actual measurement<TTheory of inner discThe filter screen is indicated to be dirty and blocked, but the dirty and blocked degree can be accepted, and a cleaning prompt is not required to be given;
S3122、Tinner disc actual measurement≤TTheory of inner discQ, which indicates that the filter screen is seriously clogged and needs to give a cleaning prompt or perform a filter screen cleaning action.
Further, step S300 further includes the steps of:
s310, if the air conditioner is in a refrigeration mode, judging whether a cleaning prompt needs to be given according to the following steps:
S311′、Tinner disc actual measurement≥TTheory of inner discThe filter screen is not dirty and needs no cleaning;
S312′、Ttheory of inner disc-Q<TInner disc actual measurement<TTheory of inner discThe filter screen is indicated to be dirty and blocked, but the dirty and blocked degree can be accepted, and a cleaning prompt is not required to be given;
S313′、Tinner disc actual measurement≤TTheory of inner discQ, which indicates that the filter screen is seriously clogged and needs to give a cleaning prompt or perform a filter screen cleaning action.
Step S310 has two logic determination modes, which may be a two-step determination mode or a one-step determination mode.
In a refrigeration mode of the air conditioner, a heat exchanger of the indoor unit is used as an evaporator, after a filter screen is dirty and blocked, the air intake is reduced, the heat exchange of a coil pipe of the indoor unit is deteriorated, the evaporation temperature is reduced, and the measured value of the temperature of the coil pipe of the indoor unit is smaller than the theoretical value of the temperature of the coil pipe of the indoor unit.
Further, step S300 further includes the steps of:
s320, if the air conditioner is in a heating mode, judging whether a cleaning prompt needs to be given according to the following steps:
S321、Tinner disc actual measurement≤TTheory of inner discThe filter screen is not dirty and needs no cleaning;
S322、Tinner disc actual measurement>TTheory of inner discIf the filter screen is dirty, further judging the dirty degree of the filter screen, and judging whether a cleaning prompt needs to be given according to the dirty degree;
S3221、Ttheory of inner disc+Q>TInner disc actual measurement>TTheory of inner discThe filter screen is indicated to be dirty and blocked, but the dirty and blocked degree can be accepted, and a cleaning prompt is not required to be given;
S3222、Tinner disc actual measurement≥TTheory of inner disc+ Q, it indicates that the filth blockage of the filter screen is serious, and a cleaning prompt needs to be given or a filter screen cleaning action needs to be executed.
Further, step S300 further includes the steps of:
s320, if the air conditioner is in a heating mode, judging whether a cleaning prompt needs to be given according to the following steps:
S321′、Tinner disc actual measurement≤TTheory of inner discThe filter screen is not dirty and needs no cleaning;
S322′、Ttheory of inner disc+Q>TInner disc actual measurement>TTheory of inner discThe filter screen is indicated to be dirty and blocked, but the dirty and blocked degree can be accepted, and a cleaning prompt is not required to be given;
S323′、Tinner disc actual measurement≥TTheory of inner disc+ Q, it indicates that the filth blockage of the filter screen is serious, and a cleaning prompt needs to be given or a filter screen cleaning action needs to be executed.
Step S320 has two logic determination modes, which may be a two-step determination mode or a one-step determination mode.
In the heating mode of the air conditioner, a heat exchanger of the indoor unit is used as a condenser, after a filter screen is dirty and blocked, the air intake is reduced, the heat exchange of a coil pipe of the indoor unit is deteriorated, the condensing temperature is increased, and the measured value of the temperature of the coil pipe of the indoor unit is larger than the theoretical value of the temperature of the coil pipe of the indoor unit.
Further, the value range of Q is 1-4 ℃.
Further, step S300 further includes giving a filter screen filth blockage prompt.
The prompt message can only give a cleaning prompt message, and can also give a cleaning prompt message and a filth blockage prompt message at the same time.
The invention also provides a filter screen cleaning automatic prompt control device, which comprises:
a storage unit for storing reference slope data;
the detection unit is used for detecting the indoor environment temperature, the outdoor unit coil temperature, the compressor current or the complete machine current;
the calculating unit is used for calculating a theoretical value of the temperature of the coil pipe of the indoor unit;
the control unit is used for determining whether to start a filter screen filth blockage self-checking program according to the value of the indoor environment temperature;
the control unit is used for determining the frequency of the compressor according to the value of the outdoor environment temperature;
the control unit is used for judging whether the filter screen is dirty or not and whether a cleaning prompt needs to be given or a filter screen cleaning action needs to be executed according to the operation mode of the air conditioner and the size relation between the outdoor unit coil temperature and the theoretical value of the indoor unit coil temperature.
The invention also provides an air conditioner, which comprises a computer readable storage medium and a processor, wherein the computer readable storage medium is used for storing a computer program, and the computer program is read by the processor and runs to realize the automatic prompting method for cleaning the filter screen.
The invention also provides a storage medium, wherein a computer program is stored in the storage medium, and when the computer program is read and operated by a processor, the automatic prompting method for cleaning the filter screen is realized.
Drawings
FIG. 1 is a first schematic flow chart of a method for automatically prompting cleaning of a filter screen;
FIG. 2 is a schematic flow chart of a second method for automatically prompting cleaning of a filter screen;
FIG. 3 is a first flowchart illustrating the detailed process of step S300;
FIG. 4 is a detailed flowchart illustrating the second step S300;
FIG. 5 is a detailed flow chart of the reference slope measurement method.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
In a cooling or heating mode of the air conditioner, the condenser is used as a high-temperature heat source, the evaporator is used as a low-temperature heat source, the reduction of the evaporation temperature can increase the system power, and the reduction of the evaporation temperature is caused by factors such as the air inlet volume and the indoor temperature of an indoor unit.
As shown in fig. 1 to 4, an automatic prompt method for cleaning a filter screen specifically includes the following steps:
s100, after the filter screen filth blockage self-checking program is started, detecting the current of a compressor or the current I of the whole machine and the temperature T of an outdoor unit coilOuter disk actual measurementAnd the temperature T of the coil pipe of the indoor unitInner disc actual measurement；
S200, according to I, TOuter disk actual measurementA preset reference slope K and a slope calculation formula, thereby obtaining a theoretical value T of the temperature of the coil pipe of the indoor unitTheory of inner disc；
S300, according to the operation mode and T of the air conditionerInner disc actual measurementAnd TTheory of inner discThe size relationship of the filter screen, whether the filter screen is dirty or not and whether a cleaning prompt is required or a filter screen cleaning action is required to be executed.
The filter screen filth blockage self-checking program needs to meet the following conditions: detecting indoor ambient temperature TIndoor useIf T isIndoor useSatisfies A<TIndoor use<And B, starting a filter screen filth blockage self-checking program.
The accuracy of program detection is influenced by too high or too low indoor temperature, so that the filter screen filth blockage self-checking program needs to be started again under the condition that the indoor temperature is within a certain range.
In the embodiment, the value range of A is 24-26 ℃, and 25 ℃ is preferred; the value range of B is 27-30 ℃, preferably 28 ℃;
detecting the current of the compressor or the current I of the whole machine,outdoor unit coil temperature TOuter disk actual measurementAnd the temperature T of the coil pipe of the indoor unitInner disc actual measurementThe method also comprises the following steps: detecting outdoor ambient temperature TOutdoorsAccording to TOutdoorsThe frequency of the compressor is determined by the numerical value of the air inlet and outlet fans, so that the compressor runs at the set frequency and the inner and outer fans run at the set rotating speed.
Compressor frequency and outdoor ambient temperature TOutdoorsThe relationship of (a) to (b) is as follows:
X<ToutdoorsThe set frequency of the compressor is P1。
In the embodiment, taking the refrigeration mode of the air conditioner as an example, the value range of X is 20 ℃ to 28 ℃, and preferably 28 ℃; p1The value range of (A) is 20Hz-40Hz, preferably 35 Hz.
X<TOutdoors<Y, the set frequency of the compressor is P2。
In the embodiment, taking the refrigeration mode of the air conditioner as an example, the value range of X is 20 ℃ to 28 ℃, and preferably 28 ℃; the value range of Y is 48-58 ℃, preferably 50 ℃; p2The value range of (A) is 40Hz-70Hz, preferably 60 Hz.
Y<TOutdoorsThe set frequency of the compressor is P3。
In the embodiment, taking the refrigeration mode of the air conditioner as an example, the value range of Y is 48-58 ℃, and preferably 50 ℃; p3The value range of (A) is 30Hz-60Hz, preferably 45 Hz.
The temperature of the inner and outer coil pipes is abnormal due to overhigh or overlow outdoor environment temperature, the error is large, and the accuracy of filter screen filth blockage judgment is influenced.
The slope calculation formula of step S200 is: k ═ TOuter plate-TInner disc) And I, the slope of the reference curve in the cooling mode is a positive value, and the slope of the reference curve in the heating mode is a negative value.
The slope calculation formula of step S200 is: in the cooling mode, K ═ TOuter plate-TInner disc) I; in the heating mode, the heating device is arranged,K＝(Tinner disc-TOuter plate)/I。
The compressor current or the whole machine current I is the average current of the air conditioner in the continuous operation preset time.
The air conditioner continuously operates for a first preset time T, detects compressor current or complete machine current I once every second preset time T, and calculates average current I in the first preset time TAverage。
The average current is used for calculating the theoretical value of the temperature of the coil pipe of the indoor unit, so that the detection is more accurate, and the false alarm is reduced.
In a refrigeration mode of the air conditioner, a heat exchanger of the indoor unit is used as an evaporator, after a filter screen is dirty and blocked, the air intake is reduced, the heat exchange of a coil pipe of the indoor unit is deteriorated, the evaporation temperature is reduced, and the measured value of the temperature of the coil pipe of the indoor unit is smaller than the theoretical value of the temperature of the coil pipe of the indoor unit.
As shown in fig. 3-4, step S300 further includes the steps of:
s310, if the air conditioner is in a refrigeration mode, judging whether a cleaning prompt needs to be given according to the following steps:
S311、Tinner disc actual measurement≥TTheory of inner discIt is indicated that the filter screen is not dirty and needs no cleaning.
S312、TInner disc actual measurement<TTheory of inner discAnd if the filter screen is dirty, further judging the dirty degree of the filter screen, and judging whether a cleaning prompt needs to be given according to the dirty degree.
S3121、TTheory of inner disc-Q<TInner disc actual measurement<TTheory of inner discThe filter screen is indicated to have filth blockage, but the filth blockage degree can be accepted, and a cleaning prompt is not required to be given. The value range of Q is 1-4 ℃, preferably 2 ℃.
S3122、TInner disc actual measurement≤TTheory of inner discQ, which indicates that the filter screen is seriously clogged and needs to give a cleaning prompt or perform a filter screen cleaning action.
It is understood that step S310 may be a two-step determination method or a one-step determination method, as shown in fig. 3, and S310 further includes the following steps:
S311′、Tinner disc actual measurement≥TTheory of inner discIt is indicated that the filter screen is not dirty and needs no cleaning.
S312′、TTheory of inner disc-Q<TInner disc actual measurement<TTheory of inner discThe filter screen is indicated to have filth blockage, but the filth blockage degree can be accepted, and a cleaning prompt is not required to be given. The value range of Q is 1-4 ℃, preferably 2 ℃.
S313′、TInner disc actual measurement≤TTheory of inner discQ, which indicates that the filter screen is seriously clogged and needs to give a cleaning prompt or perform a filter screen cleaning action.
In the heating mode of the air conditioner, a heat exchanger of the indoor unit is used as a condenser, after a filter screen is dirty and blocked, the air intake is reduced, the heat exchange of a coil pipe of the indoor unit is deteriorated, the condensing temperature is increased, and the measured value of the temperature of the coil pipe of the indoor unit is larger than the theoretical value of the temperature of the coil pipe of the indoor unit.
S320, if the air conditioner is in a heating mode, judging whether a cleaning prompt needs to be given according to the following steps:
S321、Tinner disc actual measurement≤TTheory of inner discIt is indicated that the filter screen is not dirty and needs no cleaning.
S322、TInner disc actual measurement>TTheory of inner discAnd if the filter screen is dirty, further judging the dirty degree of the filter screen, and judging whether a cleaning prompt needs to be given according to the dirty degree.
S3221、TTheory of inner disc+Q>TInner disc actual measurement>TTheory of inner discThe filter screen is indicated to have filth blockage, but the filth blockage degree can be accepted, and a cleaning prompt is not required to be given. The value range of Q is 1-4 ℃, preferably 2 ℃.
S3222、TInner disc actual measurement≥TTheory of inner disc+ Q, it indicates that the filth blockage of the filter screen is serious, and a cleaning prompt needs to be given or a filter screen cleaning action needs to be executed.
It is understood that step S320 may be a two-step determination method or a one-step determination method, as shown in fig. 3, and S320 further includes the following steps:
S321′、Tinner disc actual measurement≤TTheory of inner discIt is indicated that the filter screen is not dirty and needs no cleaning.
S322′、TTheory of inner disc+Q>TInner disc actual measurement>TTheory of inner discThe filter screen is indicated to have filth blockage, but the filth blockage degree can be accepted, and a cleaning prompt is not required to be given. The value range of Q is 1-4 ℃, preferably 2 ℃.
S323′、TInner disc actual measurement≥TTheory of inner disc+ Q, it indicates that the filth blockage of the filter screen is serious, and a cleaning prompt needs to be given or a filter screen cleaning action needs to be executed.
It can be understood that the prompt message may only give the cleaning prompt message, or may give the cleaning prompt message and the filth blockage prompt message at the same time.
By the method, the filth blockage condition of the filter screen can be automatically detected, whether a cleaning instruction needs to be given or not is determined according to the actual filth blockage condition of the filter screen, the method is not influenced by various environments, the cleaning prompting accuracy is high, the efficient operation of the air conditioner can be ensured, and the filter screen can be prevented from being cleaned too early or too late.
A temperature-current reference curve of the air conditioner is measured and plotted in a laboratory, and data of the reference slope K is stored in a control device of the air conditioner.
As shown in fig. 5, the specific steps of measuring and plotting the temperature-current reference curve of the air conditioner in the laboratory are as follows:
z110, detecting the indoor environment temperature T after the air conditioner is started under the condition that the filter screen is cleanLaboratoryIf T isLaboratorySatisfies A<TLaboratory<And B, starting a detection program. The environment temperature in the laboratory is too high or too low, which can bring detection errors and inaccurate measurement.
Z120, detecting the outdoor environment temperature T of the experiment chamberOutside laboratoryAccording to TOutside laboratoryThe frequency of the compressor is determined by the numerical value of the air inlet and outlet fans, so that the compressor runs at the set frequency and the inner and outer fans run at the set rotating speed.
Z121、X<TOutside laboratoryThe set frequency of the compressor is P1。
Z122、X<TOutside laboratory<Y, the set frequency of the compressor is P2。
Z123、Y<TOutside laboratoryThe set frequency of the compressor is P3。
The temperature of the inner and outer coil pipes is abnormal due to overhigh or overlow outdoor environment temperature, the error is large, and the accuracy of filter screen filth blockage judgment is influenced. When a reference curve is measured in a laboratory stage, the outdoor environment temperature is segmented, and the segmentation is the same as the segmentation of the outdoor environment temperature after the air conditioner starts the self-checking program of the filter screen, so that the error is reduced, and the accuracy is improved.
Z130, continuously operating the air conditioner for a first preset time T, detecting the current of the compressor or the current I of the whole air conditioner once every second preset time T, and calculating the average current I in the first preset time TAverage。
Z140, detecting the temperature T of the coil pipe of the indoor unitInner discAnd outdoor unit coil temperature TOuter plate。
Z150, according to IAverage、TInner disc、TOuter plateCalculating the slope K of the reference curve:
K＝(Touter plate-TInner disc)/IAverage。
The slope of the reference curve in the cooling mode is a positive value, and the slope of the reference curve in the heating mode is a negative value.
Optionally, according to K ═ T (T) in the cooling modeOuter plate-TInner disc)/IAverageCalculating the slope K of the reference curve according to the K ═ T in the heating modeInner disc-TOuter plate)/IAverageAnd calculating the slope K of the reference curve, wherein the slope K of the reference curve is a positive value no matter in the cooling mode or the heating mode.
Z160, according to IAverage、(TOuter plate-TInner disc) And the slope K of the reference curve, and respectively drawing the temperature-current reference in the heating modeCurves and temperature-current reference curves in cooling mode.
By the method, the temperature-current reference curve in the heating mode and the temperature-current reference curve in the cooling mode of each air conditioner model can be obtained, the air conditioner models are different, and the temperature-current reference curves are also different, so that the filth blockage judgment of the filter screen is more accurate.
Example two
A filter screen cleaning automatic prompt control device comprises:
a storage unit for storing reference slope data;
the detection unit is used for detecting the indoor environment temperature, the outdoor unit coil temperature, the compressor current or the complete machine current;
the calculating unit is used for calculating a theoretical value of the temperature of the coil pipe of the indoor unit;
the control unit is used for determining whether to start a filter screen filth blockage self-checking program according to the value of the indoor environment temperature;
the control unit is used for determining the frequency of the compressor according to the value of the outdoor environment temperature;
the control unit is used for judging whether the filter screen is dirty or not and whether a cleaning prompt needs to be given or a filter screen cleaning action needs to be executed according to the operation mode of the air conditioner and the size relation between the outdoor unit coil temperature and the theoretical value of the indoor unit coil temperature.
EXAMPLE III
An air conditioner comprises a computer readable storage medium and a processor, wherein a computer program is stored in the computer readable storage medium, and when the computer program is read and executed by the processor, the automatic prompting method for cleaning a filter screen in the first embodiment is realized.
Example four
A storage medium is provided, in which a computer program is stored, and when the computer program is read and executed by a processor, the automatic prompting method for cleaning a filter screen in the first embodiment is implemented.
Of course, those skilled in the art will understand that all or part of the processes in the methods of the above embodiments may be implemented by instructing the control device to perform operations through a computer, and the programs may be stored in a computer-readable storage medium, and when executed, the programs may include the processes of the above method embodiments, where the storage medium may be a memory, a magnetic disk, an optical disk, and the like.
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 (16)

1. A filter screen cleaning automatic prompting method is characterized in that: the method comprises the following steps:
s100, after the filter screen filth blockage self-checking program is started, detecting the current of a compressor or the current I of the whole machine and the temperature T of an outdoor unit coilOuter disk actual measurementAnd the temperature T of the coil pipe of the indoor unitInner disc actual measurement；
S200, according to I, TOuter disk actual measurementA preset reference slope K and a slope calculation formula, thereby obtaining a theoretical value T of the temperature of the coil pipe of the indoor unitTheory of inner disc；
S300, according to the operation mode and T of the air conditionerInner disc actual measurementAnd TTheory of inner discJudging whether the filter screen is dirty or not and whether a cleaning prompt is required or a filter screen cleaning action is required to be executed or not;
wherein, the slope calculation formula of step S200 is: k = (T)Outer disk actual measurement-TTheory of inner disc) The slope is positive in the refrigeration mode, and the slope is negative in the heating mode; or in the cooling mode, K = (T)Outer disk actual measurement-TTheory of inner disc) I; in heating mode, K = (T)Theory of inner disc-TOuter disk actual measurement）/ I。
2. The automatic prompting method for cleaning the filter screen according to claim 1, characterized in that: the filter screen filth blockage self-checking program needs to meet the following conditions:detecting indoor ambient temperature TIndoor useIf T isIndoor useSatisfies A<TIndoor use<And B, starting a filter screen filth blockage self-checking program.
3. The automatic prompting method for cleaning the filter screen according to claim 2, characterized in that: the value range of A is 24-26 ℃, and the value range of B is 27-30 ℃.
4. The automatic prompting method for cleaning the filter screen according to claim 1, characterized in that: detecting compressor current or complete machine current I, outdoor machine coil temperature TOuter disk actual measurementAnd the temperature T of the coil pipe of the indoor unitInner disc actual measurementThe method also comprises the following steps: detecting outdoor ambient temperature TOutdoorsAccording to TOutdoorsThe frequency of the compressor is determined by the numerical value of the air inlet and outlet fans, so that the compressor runs at the set frequency and the inner and outer fans run at the set rotating speed.
5. The automatic prompting method for cleaning the filter screen according to claim 4, characterized in that: compressor frequency and outdoor ambient temperature TOutdoorsThe relationship of (a) to (b) is as follows:
X <ToutdoorsThe set frequency of the compressor is P1；
X<TOutdoors<Y, the set frequency of the compressor is P2；
Y<TOutdoorsThe set frequency of the compressor is P3。
6. The automatic prompting method for cleaning the filter screen according to claim 5, characterized in that: under the refrigeration mode, the value range of X is 20-28 ℃, the value range of Y is 48-58 ℃, and P1The value range of (A) is 20Hz-40Hz, P2The value range of (A) is 40Hz-70Hz, P3The value range of (A) is 30Hz-60 Hz.
7. The automatic prompting method for cleaning the filter screen according to claim 1, characterized in that: and the current of the compressor or the current I of the whole air conditioner is the average current of the air conditioner in the continuous operation preset time.
8. The automatic prompting method for cleaning the filter screen according to claim 1, characterized in that: step S300 further includes the steps of:
s310, if the air conditioner is in a refrigeration mode, judging whether a cleaning prompt needs to be given according to the following steps:
S311、Tinner disc actual measurement≥TTheory of inner discThe filter screen is not dirty and needs no cleaning;
S312、Tinner disc actual measurement<TTheory of inner discIf the filter screen is dirty, further judging the dirty degree of the filter screen, and judging whether a cleaning prompt needs to be given according to the dirty degree;
S3121、Ttheory of inner disc-Q<TInner disc actual measurement<TTheory of inner discThe filter screen is indicated to be dirty and blocked, but the dirty and blocked degree can be accepted, and a cleaning prompt is not required to be given;
S3122、Tinner disc actual measurement≤ TTheory of inner discQ, which indicates that the filter screen is seriously clogged and needs to give a cleaning prompt or perform a filter screen cleaning action.
9. The automatic prompting method for cleaning the filter screen according to claim 1, characterized in that: step S300 further includes the steps of:
s310, if the air conditioner is in a refrigeration mode, judging whether a cleaning prompt needs to be given according to the following steps:
S311′、Tinner disc actual measurement≥TTheory of inner discThe filter screen is not dirty and needs no cleaning;
S312′、Ttheory of inner disc-Q<TInner disc actual measurement<TTheory of inner discThe filter screen is indicated to be dirty and blocked, but the dirty and blocked degree can be accepted, and a cleaning prompt is not required to be given;
S313′、Tinner disc actual measurement≤ TTheory of inner discQ, which indicates that the filter screen is seriously clogged and needs to be givenCleaning prompt or execution of filter screen cleaning action.
10. The automatic prompting method for cleaning the filter screen according to claim 1, characterized in that: step S300 further includes the steps of:
s320, if the air conditioner is in a heating mode, judging whether a cleaning prompt needs to be given according to the following steps:
S321、Tinner disc actual measurement≤TTheory of inner discThe filter screen is not dirty and needs no cleaning;
S322、Tinner disc actual measurement>TTheory of inner discIf the filter screen is dirty, further judging the dirty degree of the filter screen, and judging whether a cleaning prompt needs to be given according to the dirty degree;
S3221、Ttheory of inner disc+Q>TInner disc actual measurement>TTheory of inner discThe filter screen is indicated to be dirty and blocked, but the dirty and blocked degree can be accepted, and a cleaning prompt is not required to be given;
S3222、Tinner disc actual measurement≥TTheory of inner disc+ Q, it indicates that the filth blockage of the filter screen is serious, and a cleaning prompt needs to be given or a filter screen cleaning action needs to be executed.
11. The automatic prompting method for cleaning the filter screen according to claim 1, characterized in that: step S300 further includes the steps of:
s320, if the air conditioner is in a heating mode, judging whether a cleaning prompt needs to be given according to the following steps:
S321′、Tinner disc actual measurement≤TTheory of inner discThe filter screen is not dirty and needs no cleaning;
S322′、Ttheory of inner disc+Q>TInner disc actual measurement>TTheory of inner discThe filter screen is indicated to be dirty and blocked, but the dirty and blocked degree can be accepted, and a cleaning prompt is not required to be given;
S323′、Tinner disc actual measurement≥ TTheory of inner disc+ Q, it indicates that the filth blockage of the filter screen is serious, and a cleaning prompt or execution needs to be givenAnd (5) cleaning the filter screen.
12. The automatic prompting method for cleaning the filter screen according to any one of claims 8-11, characterized in that: the value range of Q is 1-4 ℃.
13. The automatic prompting method for cleaning the filter screen according to claim 1, characterized in that: step S300 further includes giving a filter screen filth blockage prompt.
14. The utility model provides a filter screen washs automatic suggestion controlling means which characterized in that: the method comprises the following steps:
a storage unit for storing reference slope data;
a detection unit for detecting an indoor ambient temperature TIndoor useOutdoor ambient temperature TOutdoorsOutdoor unit coil temperature TOuter disk actual measurementIndoor unit coil temperature TInner disc actual measurementCompressor current or overall machine current I;
a computing unit for calculating the current of the compressor or the current I of the whole machine and the temperature T of the coil pipe of the outdoor unitOuter disk actual measurementCalculating a theoretical value T of the temperature of the coil pipe of the indoor unit by using a preset reference slope K and a slope calculation formulaTheory of inner disc；
A control unit for controlling the indoor temperature TIndoor useDetermining whether to start a filter screen filth blockage self-checking program or not according to the numerical value;
the control unit is used for controlling the outdoor temperature T according to the outdoor environment temperatureOutdoorsDetermining the compressor frequency;
the control unit is used for controlling the air conditioner according to the operation mode of the air conditioner and the temperature T of the coil pipe of the indoor unitInner disc actual measurementAnd the theoretical value T of the temperature of the coil pipe of the indoor unitTheory of inner discJudging whether the filter screen is dirty or not and whether a cleaning prompt needs to be given or a filter screen cleaning action needs to be executed or not according to the size relation of the filter screen;
the slope calculation formula is as follows: k = (T)Outer disk actual measurement-TTheory of inner disc) The slope is positive in the refrigeration mode, and the slope is negative in the heating mode; or in the cooling mode, K = (T)Outer disk actual measurement-TTheory of inner disc) I; in heating mode, K = (T)Theory of inner disc-TOuter disk actual measurement）/ I。
15. An air conditioner, characterized in that: comprising a computer-readable storage medium and a processor, in which a computer program is stored, which, when read and executed by the processor, implements the automatic filter screen cleaning reminder method according to any one of claims 1 to 13.
16. A storage medium, characterized by: the storage medium stores a computer program which is read and executed by a processor to implement the automatic prompting method for cleaning the filter screen according to any one of claims 1 to 13.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113390161A (en) * 2020-03-12 2021-09-14 青岛海尔空调电子有限公司 Air-cooled heat pump hot water air conditioning unit and control method thereof
CN113060164B (en) * 2021-03-31 2023-01-31 中车青岛四方机车车辆股份有限公司 Filter screen monitoring method, system and related components
CN113551360B (en) * 2021-07-07 2022-09-27 珠海格力电器股份有限公司 Self-cleaning control method and device, medium and equipment for air conditioner filter screen
CN113623817B (en) * 2021-08-04 2022-10-28 珠海格力电器股份有限公司 Control method of air conditioner and air conditioner
CN114087714B (en) * 2021-11-10 2022-11-01 珠海格力电器股份有限公司 Air conditioner filter screen filth blockage detection method and device and air conditioner
CN114234364B (en) * 2021-12-17 2023-04-25 宁波奥克斯电气股份有限公司 Dirty blocking judgment method and device for air conditioner filter screen and air conditioner
CN115468274A (en) * 2022-08-15 2022-12-13 珠海格力电器股份有限公司 Air conditioner outdoor unit grille filth blockage detection method
CN115574860B (en) * 2022-09-21 2023-04-07 爱优特空气技术（上海）有限公司 Automatic identification device and method for filth blockage condition of micro-electrostatic dust collection module

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102748837A (en) * 2012-07-28 2012-10-24 Tcl空调器(中山)有限公司 Air conditioner and automatically-reminding method for dirty and blocking of filter screen thereof
JP2015210063A (en) * 2014-04-30 2015-11-24 三菱重工業株式会社 Air conditioner indoor unit and air conditioner equipped therewith, and dirt detection method for heat exchanger
CN105333563A (en) * 2014-07-29 2016-02-17 海信（山东）空调有限公司 Refrigeration control method and device and air conditioner
CN106642558A (en) * 2016-12-06 2017-05-10 海信（广东）空调有限公司 Detection method for dust removal of variable frequency air conditioner heat exchanger
CN108386957A (en) * 2018-01-22 2018-08-10 青岛海尔空调器有限总公司 Automatically cleaning control method and air conditioner for air conditioner

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102589214A (en) * 2012-03-12 2012-07-18 中国建筑东北设计研究院有限公司 Winter integrated automatic defrosting and anti-freezing operation system of new air exhaust heat exchange unit
CN106989489A (en) * 2017-04-19 2017-07-28 珠海格力电器股份有限公司 Air-conditioning filter device changes based reminding method, device and air-conditioning

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102748837A (en) * 2012-07-28 2012-10-24 Tcl空调器(中山)有限公司 Air conditioner and automatically-reminding method for dirty and blocking of filter screen thereof
JP2015210063A (en) * 2014-04-30 2015-11-24 三菱重工業株式会社 Air conditioner indoor unit and air conditioner equipped therewith, and dirt detection method for heat exchanger
CN105333563A (en) * 2014-07-29 2016-02-17 海信（山东）空调有限公司 Refrigeration control method and device and air conditioner
CN106642558A (en) * 2016-12-06 2017-05-10 海信（广东）空调有限公司 Detection method for dust removal of variable frequency air conditioner heat exchanger
CN108386957A (en) * 2018-01-22 2018-08-10 青岛海尔空调器有限总公司 Automatically cleaning control method and air conditioner for air conditioner

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