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CN114413415A - Air conditioner defrosting control method and controller thereof - Google Patents

Air conditioner defrosting control method and controller thereof Download PDF

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Publication number
CN114413415A
CN114413415A CN202111535485.0A CN202111535485A CN114413415A CN 114413415 A CN114413415 A CN 114413415A CN 202111535485 A CN202111535485 A CN 202111535485A CN 114413415 A CN114413415 A CN 114413415A
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indoor
target temperature
temperature
temperature drop
defrosting
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CN202111535485.0A
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CN114413415B (en
Inventor
熊绍森
连彩云
廖敏
梁之琦
徐耿彬
郭宏月
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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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
    • F24F11/41—Defrosting; Preventing freezing
    • F24F11/42—Defrosting; Preventing freezing of outdoor units
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The application relates to an air conditioner defrosting control method and a controller thereof. The method comprises the following steps: acquiring the grade of frosting degree according to the temperature decay rate of the outer pipe; acquiring indoor target temperature drop according to an indoor temperature difference, wherein the indoor temperature difference is the difference between the temperature set by a user and the indoor detection temperature; the indoor target temperature drop is a corresponding indoor adjustment target under the current indoor temperature difference and the indoor detection temperature; and determining the current compressor operating frequency of the air conditioner according to the proportional relation between the frosting degree grade and the indoor target temperature drop. The scheme that this application provided can be according to the proportional relation of the degree of frosting and target temperature drop, obtains the defrosting demand that the user is actual, according to the defrosting demand that the user is actual, confirms the correction frequency of compressor, and then confirms the compressor operating frequency under the different defrosting demands, and this scheme has improved the fineness in the defrosting operation, when taking into account the defrosting effect, the fluctuation of reduction temperature improves user's comfort level.

Description

Air conditioner defrosting control method and controller thereof
Technical Field
The application relates to the technical field of air conditioners, in particular to an air conditioner defrosting control method and a controller thereof.
Background
In the related art, along with the continuous improvement of the living standard of people, in order to maintain comfortable ambient temperature, the air conditioner has become an essential device in people's life, and when the air conditioner operates under the low temperature environment in winter, because the refrigerant evaporating temperature that flows through the outdoor heat exchanger is lower and outdoor humidity is higher, the surface of the heat exchanger is easy to accumulate frost layer when the air conditioner operates for a long time, thereby influencing the heat exchange effect of the air conditioner.
In order to solve the above problems, the common practice of the prior art is as follows: when the air conditioner meets certain conditions, the air conditioner is controlled to be switched from a heating operation mode to a cooling operation mode, a refrigerant with higher temperature flows through an outdoor heat exchanger, the surface temperature of the heat exchanger is increased, a frost layer is melted, the defrosting mode (namely the cooling operation mode) is withdrawn after the temperature of the outdoor heat exchanger is increased to a certain temperature, and then the defrosting mode is switched to the heating operation mode again.
Disclosure of Invention
In order to solve the problems in the related art, the application provides an air conditioner defrosting control method and a controller thereof, the air conditioner defrosting control method can obtain the actual defrosting demand index value of a user according to the proportional relation between the frosting degree and the target temperature drop, and determine the correction frequency of a compressor according to the actual defrosting demand index value of the user, so that the operation frequency of the compressor under different defrosting demands is adjusted, the fineness in defrosting operation is improved, the fluctuation of indoor temperature is reduced while the defrosting effect is considered as much as possible, and the comfort level of the user is improved.
The application provides in a first aspect an air conditioner defrosting control method, including the following steps: acquiring the grade of frosting degree according to the temperature decay rate of the outer pipe; acquiring indoor target temperature drop according to an indoor temperature difference value, wherein the indoor temperature difference value is the difference value between the temperature set by a user and the indoor detection temperature; the indoor target temperature drop is a corresponding indoor adjustment target under the current indoor temperature difference and the indoor detection temperature; and determining the current compressor operating frequency of the air conditioner according to the proportional relation between the frosting degree grade and the indoor target temperature drop.
In one embodiment, the determining the current compressor operating frequency of the air conditioner according to the proportional relationship between the frosting degree grade and the indoor target temperature drop comprises: setting a frosting degree weight value according to the frosting degree grade; setting a target temperature drop weight value according to the indoor target temperature drop; obtaining a defrosting demand index value according to the proportional relation between the frosting degree weight value and the target temperature drop weight value; matching a third corresponding relation table to obtain a compressor correction frequency, wherein the third corresponding relation table is a mapping relation table of defrosting demand index values and the compressor correction frequency; and determining the current compressor operating frequency of the air conditioner according to the corrected compressor frequency.
In one embodiment, said obtaining a frost formation level from a rate of decay of the temperature of the outer tube comprises: acquiring the temperature of the outer pipe at a first moment and a second moment within a fixed time step tau; calculating the temperature decay rate of the outer pipe according to the temperature of the outer pipe at the first moment and the temperature at the second moment; and matching a first corresponding relation table to obtain the frosting degree grade, wherein the first corresponding relation table is a mapping relation table of the temperature decay rate of the outer pipe and the frosting degree.
In one embodiment, the obtaining the indoor target temperature drop according to the indoor temperature difference comprises: acquiring a user set temperature and an indoor detection temperature, and calculating an indoor temperature difference value of the user set temperature and the indoor detection temperature; and matching a second corresponding relation table to determine the indoor target temperature drop, wherein the second corresponding relation table is a mapping relation table of the indoor temperature difference, the indoor detection temperature and the indoor target temperature drop.
In one embodiment, the third correspondence table includes a first defrost demand index value, a second defrost demand index value, a third defrost demand index value, a fourth defrost demand index value, and a fifth defrost demand index value; when the defrosting demand index value is greater than or equal to a first defrosting demand index value and less than or equal to a second defrosting demand index value, the compressor correction frequency is determined as a first compressor correction frequency; when the defrosting demand index value is greater than a second defrosting demand index value and less than or equal to a third defrosting demand index value, the compressor correction frequency is determined as a second compressor correction frequency; when the defrosting demand index value is greater than a third defrosting demand index value and less than or equal to a fourth defrosting demand index value, the compressor correction frequency is determined as a third compressor correction frequency; when the defrosting demand index value is greater than a fourth defrosting demand index value and less than or equal to a fifth defrosting demand index value, the compressor correction frequency is determined as a fourth compressor correction frequency; when the defrosting demand index value is greater than a fifth defrosting demand index value, the compressor correction frequency is determined as a fifth compressor correction frequency; wherein the first defrost demand index value < the second defrost demand index value < the third defrost demand index value < the fourth defrost demand index value < the fifth defrost demand index value; first compressor correction frequency < second compressor correction frequency < third compressor correction frequency < fourth compressor correction frequency < fifth compressor correction frequency.
In one embodiment, the first table of correspondences comprises a first decay rate, a second decay rate, a third decay rate, and a fourth decay rate; when the temperature decay rate of the outer pipe is greater than a second decay rate and less than or equal to a first decay rate, determining the frosting degree as a grade I frosting degree; when the temperature decay rate of the outer pipe is greater than a third decay rate and less than or equal to a second decay rate, determining the frosting degree as a second-level frosting degree; when the temperature decay rate of the outer pipe is greater than a fourth decay rate and less than or equal to a third decay rate, determining the frosting degree as a grade III frosting degree; when the temperature decay rate of the outer pipe is less than or equal to a fourth decay rate, determining the frosting degree as a grade IV frosting degree; wherein the outer tube temperature decay rate is negative, the first decay rate > the second decay rate > the third decay rate > the fourth decay rate.
In one embodiment, the indoor temperature differences in the second correspondence table include a first temperature difference value < second temperature difference value < third temperature difference value < fourth temperature difference value, a second temperature difference value, a third temperature difference value, and a fourth temperature difference value; the indoor detection temperatures in the second correspondence table include a first indoor temperature, a second indoor temperature, a third indoor temperature, and a fourth indoor temperature, and the first indoor temperature < the second indoor temperature < the third indoor temperature < the fourth indoor temperature; when the indoor detection temperature is a first indoor temperature, the first temperature difference value, the second temperature difference value, the third temperature difference value and the fourth temperature difference value respectively correspond to a first target temperature drop, a second target temperature drop, a third target temperature drop and a fourth target temperature drop, wherein the first target temperature drop > the second target temperature drop > the third target temperature drop > the fourth target temperature drop; and when the temperature difference is a first temperature difference, the first indoor temperature, the second indoor temperature, the third indoor temperature and the fourth indoor temperature respectively correspond to a first target temperature drop, a fifth target temperature drop, a ninth target temperature drop and a thirteenth target temperature drop, wherein the first target temperature drop is less than the fifth target temperature drop and less than the ninth target temperature drop and less than the thirteenth target temperature drop.
In one embodiment, the indoor target temperature drop comprises: and N indoor target temperature drops, wherein the value of any one of the N indoor target temperature drops is greater than or equal to 1 ℃ and less than or equal to 7 ℃.
In a kind of implementationIn the scheme, a calculation formula of the current compressor operating frequency of the air conditioner is as follows: f ═ FCorrection+FDatumWherein F isCorrectionCorrecting the frequency for the compressor, FDatumThe compressor reference frequency is the defrost phase.
In one embodiment, the correction frequency of the air conditioner compressor is in a range of greater than or equal to-10 HZ and less than or equal to 10 HZ.
In one embodiment, the setting of the frosting level weight value according to the frosting level comprises: dividing the frosting degree into a first-level frosting degree, a second-level frosting degree, a third-level frosting degree and a fourth-level frosting degree, wherein the first-level frosting degree < the second-level frosting degree < the third-level frosting degree < the fourth-level frosting degree, and setting the weighted values of the frosting degrees to be 0.7, 0.8, 0.9 and 1 according to the first-level frosting degree, the second-level frosting degree, the third-level frosting degree and the fourth-level frosting degree respectively;
the setting of the target temperature drop weight value according to the indoor target temperature drop comprises: dividing the indoor target temperature drop into a first target temperature drop gradient, a second target temperature drop gradient and a third target temperature drop gradient, wherein the first target temperature drop gradient is less than the second target temperature drop gradient and less than the third target temperature drop gradient, and setting the weighted value of the target temperature drop to be 0.8, 0.9 and 1 according to the first target temperature drop gradient, the second target temperature drop gradient and the third target temperature drop gradient respectively.
The present application provides a defrosting control device for an air conditioner, which is characterized by performing the defrosting control method for an air conditioner as described above.
The technical scheme provided by the application can comprise the following beneficial effects: in the heating process of the air conditioner in winter, the surface of an outdoor heat exchanger is easy to frost, the temperature of a copper pipe of the outdoor heat exchanger is rapidly reduced due to the frosting, and the air conditioner enters a stage of extremely rapid attenuation, and generally, the temperature of a certain copper pipe on the surface of the heat exchanger is used for representing the surface temperature of the heat exchanger, namely the temperature of an outer pipe. When the absolute value of the outer tube temperature attenuation rate is larger, the outer tube temperature is represented to be faster to reduce, and the frost layer is thicker, the frosting degree can be determined through the outer tube temperature attenuation rate in the stage of extremely fast attenuation, when the indoor detection temperature is high or the indoor temperature difference is small, the acceptance degree of a user on the temperature reduction amplitude is higher, when the indoor detection temperature is low or the indoor temperature difference is large, the acceptance degree of the user on the indoor temperature reduction amplitude in the defrosting stage is judged according to the indoor temperature difference and the indoor detection temperature to determine the indoor target temperature reduction, the actual defrosting demand index value of the user can be obtained according to the proportional relation between the defrosting degree and the target temperature reduction, the current compressor operation frequency of the air conditioner is determined according to the actual defrosting demand index value of the user, the compressor operation frequency in the defrosting stage is determined according to the actual defrosting demand index value of the user, the fine degree in the defrosting operation has been improved, has been avoided in prior art, in order to guarantee the defrosting effect, causes the great condition of fluctuation to appear in the indoor temperature short time, thereby the scheme of this application reduces indoor temperature fluctuation through the operating frequency of the adjustment compressor that becomes more meticulous, the time of extension defrosting, when compromising the defrosting effect as far as possible, reduces the fluctuation of temperature, improves user's travelling comfort.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application, as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.
Fig. 1 is a flowchart illustrating an air conditioner defrosting control method according to an embodiment of the present application.
Detailed Description
Preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
At present, the air conditioner is under the heating operation mode, and the copper pipe of heat exchanger frosts easily and influences the effect of heat exchanger, need carry out the defrosting operation, among the prior art, when the defrosting, can lead to indoor temperature drop range in the short time too big, influences user's travelling comfort and experiences, and what be more, the condition that has the user to catch a cold appears.
In view of the above problems, an embodiment of the present application provides an air conditioner defrosting control method, which can obtain an actual defrosting demand index value of a user according to a proportional relationship between a frosting degree and a target temperature drop, and determine a correction frequency of a compressor according to the actual defrosting demand index value of the user, thereby determining an operating frequency of the compressor under different defrosting demands, improving fineness in defrosting operation, reducing temperature fluctuation while giving consideration to a defrosting effect as much as possible, and improving comfort of the user.
The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Example one
Referring to fig. 1, fig. 1 is a schematic flow chart of an air conditioner defrosting control method according to an embodiment of the present application.
The defrosting control method of the air conditioner comprises the following steps:
s1, in the heating process of the air conditioner in winter, the surface of the outdoor heat exchanger is easy to frost, the temperature of a copper pipe of the outdoor heat exchanger is rapidly reduced due to the frosting, and the heat exchanger enters a stage of extremely rapid attenuation, and generally, the temperature of a certain copper pipe on the surface of the heat exchanger is used for representing the surface temperature of the heat exchanger, namely the temperature of an outer pipe. The method comprises the steps that a stage of rapid temperature decrease of an outer pipe is called a top-speed attenuation stage, the change rate of the temperature of the outer pipe in the top-speed attenuation stage is called an outer pipe temperature attenuation rate, and the effect of a heat exchanger is influenced due to frosting on the surface of the heat exchanger;
s2, because the conventional air conditioner has 5-7 ℃ indoor temperature drop in the reverse cycle defrosting stage, the fluctuation of the temperature drop is too large for some users, so that discomfort is easily caused, and in order to better match the acceptance range of the temperature drop of the users, the indoor target temperature drop can be obtained according to the indoor temperature difference, wherein the indoor temperature difference is the difference between the temperature set by the users and the indoor detection temperature; the indoor target temperature drop is an indoor adjustment target corresponding to a current indoor temperature difference value and an indoor detection temperature, specifically, after the air conditioner enters defrosting operation, a control unit of the air conditioner can acquire a user set temperature and an indoor detection temperature, the indoor temperature difference value is obtained through calculation according to the user set temperature and the indoor detection temperature, and then the indoor adjustment target is determined according to the indoor temperature difference value and the indoor detection temperature, because the indoor temperature difference value can represent the difference value between the current indoor detection temperature and the temperature expected to be reached by the user, when the indoor temperature difference value is large or the indoor detection temperature is low, the situation that the current indoor detection temperature deviates from the user set temperature is far is shown, the user demand on the temperature is high, the acceptance range on the temperature drop is low, and the indoor target temperature drop needs to be reduced at the moment.
And S3, matching the defrosting requirement of the user according to the frosting degree grade, matching the receiving amplitude of the temperature drop of the user according to the indoor target temperature drop, considering the temperature drop feeling of the user while giving consideration to the defrosting effect as much as possible, and determining the current compressor operating frequency of the air conditioner according to the proportional relation between the frosting degree grade and the indoor target temperature drop.
In the first embodiment, in the heating process of the air conditioner in winter, the surface of the outdoor heat exchanger is prone to frosting, the temperature of the copper pipe of the outdoor heat exchanger is rapidly reduced due to frosting, and the stage of extremely fast attenuation is entered. When the absolute value of the outer tube temperature attenuation rate is larger, the outer tube temperature is represented to be faster to reduce, and the frost layer is thicker, the frosting degree can be determined through the outer tube temperature attenuation rate in the stage of extremely fast attenuation, when the indoor detection temperature is high or the indoor temperature difference is small, the acceptance degree of a user on the temperature reduction amplitude is higher, when the indoor detection temperature is low or the indoor temperature difference is large, the acceptance degree of the user on the indoor temperature reduction amplitude in the defrosting stage is judged according to the indoor temperature difference and the indoor detection temperature to determine the indoor target temperature reduction, the actual defrosting demand index value of the user can be obtained according to the proportional relation between the defrosting degree and the target temperature reduction, the current compressor operation frequency of the air conditioner is determined according to the actual defrosting demand index value of the user, the compressor operation frequency in the defrosting stage is determined according to the actual defrosting demand index value of the user, the utility model provides thereby the fine detail in the defrosting operation has been improved, has avoided in prior art, in order to guarantee the defrosting effect, accelerates the operating frequency of compressor by a wide margin, causes the great condition of fluctuation to appear in the indoor temperature short time, thereby the scheme of this application reduces indoor temperature fluctuation through the operating frequency of the adjustment compressor that becomes more meticulous, the time of extension defrosting, when compromise the defrosting effect as far as, improves user's travelling comfort.
Example two
On the basis of the method of the first embodiment, the following technical scheme can be adopted, and specifically:
in step S1, the obtaining the frost formation level according to the outer tube temperature decay rate includes: acquiring the temperature of the outer tube at a first moment and a second moment within a fixed time step tau, and calculating the temperature decay rate of the outer tube according to the temperature of the outer tube at the first moment and the temperature at the second moment, wherein the formula for specifically calculating the temperature decay rate of the outer tube is as follows:
Figure BDA0003413023360000081
wherein, Tt0Is the outer tube temperature at the first moment, Tt0+τAnd matching the calculated temperature decay rate of the outer tube with a first corresponding relation table to obtain the frosting degree grade, wherein the temperature of the outer tube at the second moment is earlier than the first moment, and tau is a fixed time step length, and the first corresponding relation table is a mapping relation table of the temperature decay rate of the outer tube and the frosting degree and is detailed in table 1.
Figure BDA0003413023360000082
TABLE 1 mapping relationship table of temperature decay rate and frosting degree of outer tube
In Table 1, the outer tube temperature drops due to frost formation, so the outer tube temperature decay rate upsilon takes a negative value, upsilon1Is a first decay rate, upsilon2Is a second decay rate, upsilon3Is a third decay rate and v4Is a fourth decay rate;
the first correspondence table comprises a first decay rate v1A second rate of decay υ2A third decay rate v 3 and a fourth decay rate v 4, wherein v4＜υ3＜υ2＜υ1≤0；
When the temperature decay rate of the outer pipe is larger than a second decay rate upsilon2And is less than or equal to the first decay rate v1Determining the frosting degree as the I-grade frosting degree;
when the temperature decay rate of the outer pipe is larger than a third decay rate upsilon3And is less than or equal to the second rate of decay υ2Determining the frosting degree as a second-grade frosting degree;
when the temperature decay rate of the outer pipe is larger than the fourth decay rate and smaller than or equal to the third decay rate upsilon3Determining the frosting degree as a grade III frosting degree;
when the temperature decay rate of the outer pipe is less than or equal to a fourth decay rate, determining the frosting degree as a grade IV frosting degree;
wherein, grade I frosting degree < grade II frosting degree < grade III frosting degree < grade IV frosting degree.
In step S2, the obtaining the indoor target temperature drop according to the indoor temperature difference includes: acquiring a user set temperature and an indoor detection temperature, and calculating an indoor temperature difference value of the user set temperature and the indoor detection temperature, wherein the calculation formula of the indoor temperature difference value is as follows: delta T: t isSetting up-TInner sideWherein, TSetting upSetting the temperature, T, for the userInner sideDetecting the temperature indoors;
and matching a second corresponding relation table to determine the indoor target temperature drop, wherein the second corresponding relation table is a mapping relation table of the indoor temperature difference, the indoor detection temperature and the indoor target temperature drop, and the details are shown in the table 2.
Figure BDA0003413023360000091
TABLE 2 indoor temperature difference, indoor temperature, and indoor target temperature drop mapping relationship table
In table 2: delta T1Is a first temperature difference, DeltaT2Is the second temperature difference, DeltaT3Is the third temperature difference, DeltaT4Is the fourth temperature difference, TInner side 1Is the first indoor temperature, TInner measuring 2Is the second room temperature, TInner side 3Is the third indoor temperature and TInner measuring 4Is the fourth indoor temperature.
The indoor temperature difference DeltaT in the second correspondence table includes a first temperature difference DeltaT1The second temperature difference DeltaT2Third temperature difference DeltaT3And a fourth temperature difference DeltaT4Wherein the first temperature difference DeltaT1<Second temperature difference DeltaT2<Third temperature difference DeltaT3<Fourth temperature difference DeltaT4In particular, said first temperature difference Δ T1Less than or equal to 1 ℃, the second temperature difference DeltaT2Greater than 1 ℃ and less than or equal to 3 ℃, the third temperature difference Δ T3Greater than 3 ℃ and less than or equal to 5 ℃, the fourth temperature difference Δ T4 is largeAt 5 ℃.
Indoor detection temperature T in the second correspondence tableInner sideIncluding a first indoor temperature TInner side 1Second indoor temperature TInner measuring 2And third indoor temperature TInner side 3And a fourth indoor temperature TInner measuring 4Wherein the first indoor temperature TInner side 1<Second indoor temperature TInner measuring 2<Third indoor temperature TInner side 3<Fourth indoor temperature TInner measuring 4Specifically, the first indoor temperature TInner side 1Less than 16 ℃, the second indoor temperature TInner measuring 2Greater than or equal to 16 ℃ and less than 20 ℃, and the third indoor temperature TInner side 320 ℃ or higher and 25 ℃ or lower, and the fourth indoor temperature TInner measuring 4Greater than or equal to 25 ℃.
T when the indoor detected temperature is a first indoor temperatureInner side 1Said first temperature difference DeltaT1The second temperature difference DeltaT2The third temperature difference DeltaT3And said fourth temperature difference DeltaT4Respectively corresponding to the first target temperature drop delta TTarget temperature drop 1Second target temperature drop DeltaTTarget temperature drop 2Third target temperature drop DeltaTTarget temperature drop 3And a fourth target temperature drop Δ TTarget temperatureLower 4Wherein, the temperature of 7 ℃ is not less than the first target temperature drop delta TTarget temperature drop 1>Second target temperature drop Δ TTarget temperature drop 2>Third target temperature drop Δ TTarget temperature drop 3>Fourth target temperature drop Δ TTarget temperature drop 41 ℃ or more, preferably 3 ℃ or more, a first target temperature drop Δ TTarget temperature drop 1>Second target temperature drop Δ TTarget temperature drop 2>Third target temperature drop Δ TTarget temperature drop 3>Fourth target temperature drop Δ TTarget temperature drop 4≥1℃。
T when the indoor detected temperature is a second indoor temperatureInner measuring 2Said first temperature difference DeltaT1The second temperature difference DeltaT2The third temperature difference DeltaT3And said fourth temperature difference DeltaT4Respectively corresponding to a fifth target temperature drop DeltaTTarget temperature drop 5Sixth target temperature drop Δ TTarget temperature drop 6A seventh target temperature drop Δ TTarget temperature drop 7And an eighth target temperature drop Δ TTarget temperature drop 8Wherein, the temperature is not less than 7 ℃ and not less than the fifth target temperature drop delta TTarget temperature drop 5>Sixth target temperature drop Δ TTarget temperature drop 6>Seventh target temperature drop Δ TTarget temperature drop 7>Eighth target temperature drop Δ TTarget temperature drop 8≥1℃。
T when the indoor detected temperature is a third indoor temperatureInner side 3Said first temperature difference DeltaT1The second temperature difference DeltaT2The third temperature difference DeltaT3And said fourth temperature difference DeltaT4Respectively corresponding to a ninth target temperature drop DeltaTTarget temperature drop 9The tenth target temperature drop DeltaTTarget temperature drop 10Eleventh target temperature drop Δ TTarget temperature drop 11And a twelfth target temperature drop Δ TTarget temperature drop 12Wherein, the temperature drop Delta T of the ninth target is not less than 7 DEG CTarget temperature drop 9>Tenth target temperature drop Δ TTarget temperature drop 10>Eleventh target temperature drop Δ TTarget temperature drop 11>Twelfth target temperature drop Δ TTarget temperature drop 12≥1℃。
T when the indoor detected temperature is a fourth indoor temperatureInner measuring 4Said first temperature difference DeltaT1Station, stationSaid second temperature difference DeltaT2The third temperature difference DeltaT3And said fourth temperature difference DeltaT4Respectively corresponding to a thirteenth target temperature drop DeltaTTarget temperature drop 13Fourteenth target temperature drop Δ TTarget temperature drop 14Fifteenth target temperature drop Δ TTarget temperature drop 15And sixteenth target temperature drop Δ TTarget temperature drop 16Wherein, the temperature drop delta T of the thirteenth target is more than or equal to 7 DEG CTarget temperature drop 13>Fourteenth target temperature drop Δ TTarget temperature drop 14>Fifteenth target temperature drop Δ TTarget temperature drop 15>Sixteenth target temperature drop Δ TTarget temperature drop 161 ℃ or more, preferably 7 ℃ or more, a thirteenth target temperature drop DeltaTTarget temperature drop 13>Fourteenth target temperature drop Δ TTarget temperature drop 14>Fifteenth target temperature drop Δ TTarget temperature drop 15>Sixteenth target temperature drop Δ TTarget temperature drop 16≥3℃。
When the temperature difference is a first temperature difference DeltaT1While the first indoor temperature TInner side 1The second indoor temperature TInner measuring 2And the third indoor temperature TInner side 3And the fourth indoor temperature TInner measuring 4Respectively corresponding to the first target temperature drop delta TTarget temperature drop 1Fifth target temperature drop Δ TTarget temperature drop 5Ninth target temperature drop Δ TTarget temperature drop 9And a thirteenth target temperature drop Δ TTarget temperature drop 13Wherein the temperature is not less than 1 ℃ and not more than a first target temperature drop delta TTarget temperature drop 1<Fifth target temperature drop Δ TTarget temperature drop 5<Ninth target temperature drop Δ TTarget temperature drop 9<Thirteenth target temperature drop Δ TTarget temperature drop 13≤7℃。
When the temperature difference is a first temperature difference DeltaT2While the first indoor temperature TInner side 1The second indoor temperature TInner measuring 2And the third indoor temperature TInner side 3And the fourth indoor temperature TInner measuring 4Respectively corresponding to a second target temperature drop DeltaTTarget temperature drop 2Sixth target temperature drop Δ TTarget temperature drop 6The tenth target temperature drop DeltaTTarget temperature drop 10And a fourteenth target temperature drop Δ TTarget temperature drop 14Wherein, in the step (A),the second target temperature drop delta T is not less than 1 DEG CTarget temperature drop 2<Sixth target temperature drop Δ TTarget temperature drop 6<Tenth target temperature drop Δ TTarget temperature drop 10<Fourteenth target temperature drop Δ TTarget temperature drop 14≤7℃。
When the temperature difference is a first temperature difference DeltaT3While the first indoor temperature TInner side 1The second indoor temperature TInner measuring 2And the third indoor temperature TInner side 3And the fourth indoor temperature TInner measuring 4Respectively corresponding to a third target temperature drop delta TTarget temperature drop 3A seventh target temperature drop Δ TTarget temperature drop 7Eleventh target temperature drop Δ TTarget temperature drop 11And a fifteenth target temperature drop Δ TTarget temperature drop 15Wherein the temperature drop delta T of the third target is less than or equal to 1 DEG CTarget temperature drop 3<Seventh target temperature drop Δ TTarget temperature drop 7<Eleventh target temperature drop Δ TTarget temperature drop 11<Fifteenth target temperature drop Δ TTarget temperature drop 15≤7℃。
When the temperature difference is a first temperature difference DeltaT4While the first indoor temperature TInner side 1The second indoor temperature TInner measuring 2And the third indoor temperature TInner side 3And the fourth indoor temperature TInner measuring 4Respectively corresponding to a fourth target temperature drop Delta TTarget temperature drop 4Eighth target temperature drop Δ TTarget temperature drop 8Twelfth target temperature drop Δ TTarget temperature drop 12And sixteenth target temperature drop Δ TTarget temperature drop 16Wherein the fourth target temperature drop delta T is more than or equal to 1 DEG CTarget temperature drop 4<Eighth target temperature drop Δ TTarget temperature drop 8<Twelfth target temperature drop Δ TTarget temperature drop 12<Sixteenth target temperature drop Δ TTarget temperature drop 16≤7℃。
It should be noted that the value of the indoor target temperature drop is determined according to the principle that, in the range of 1-7 ℃, the lower the indoor detection temperature is or the larger the indoor temperature difference is, the smaller the value of the indoor target temperature drop is.
In step S3, determining the current air conditioner according to the proportional relationship between the frosting degree level and the indoor target temperature dropThe compressor operating frequency of (a) includes: setting a frosting degree weight value according to the frosting degree grade; setting a target temperature drop weight value according to the indoor target temperature drop; obtaining a defrosting demand index value according to the proportional relation between the frosting degree weight value and the target temperature drop weight value
Figure BDA0003413023360000111
See table 3 for details;
Figure BDA0003413023360000112
TABLE 3 defrosting demand index table
As shown in table 3, the setting of the frosting degree weight value according to the frosting degree level includes: setting frosting degree weight values of K, L, M and N according to the first-level frosting degree, the second-level frosting degree, the third-level frosting degree and the fourth-level frosting degree, wherein the values of K, L, M and N are 0.7, 0.8, 0.9 and 1 respectively.
The setting of the target temperature drop weight value according to the indoor target temperature drop comprises: reducing the indoor target temperature by delta TTarget temperature dropIs divided into a first target temperature drop gradient, a second target temperature drop gradient and a third target temperature drop gradient, wherein the first target temperature drop gradient<Second target temperature gradient<And a third target temperature reduction gradient, specifically, the first target temperature reduction gradient is greater than or equal to 1 ℃ and less than 3 ℃, the second target temperature reduction gradient is greater than or equal to 3 ℃ and less than 5 ℃, the third target temperature reduction gradient is greater than or equal to 5 ℃ and less than or equal to 7 ℃, weight values of the indoor target temperature reduction are set to A, B and C according to the first target temperature reduction gradient, the second target temperature reduction gradient and the third target temperature reduction gradient, and specifically, the values of A, B and C are 0.8, 0.9 and 1 respectively.
If the frosting degree is the grade I frosting degree, the indoor target temperature drop delta TTarget temperature dropAt a first target temperature drop gradient, a defrost demand index value
Figure BDA0003413023360000123
It should be noted that K, L, M, N, A, B and C may be assigned different weight values, and the above is only an example.
Obtaining the compressor correction frequency by matching a third corresponding relation table according to the defrosting demand index value, wherein the third corresponding relation table is a mapping relation table of the defrosting demand index value and the compressor correction frequency, as detailed in
Table 4;
Figure BDA0003413023360000121
TABLE 4 defrost demand index value and compressor correction frequency mapping table
As shown in table 4:
Figure BDA0003413023360000122
is a defrosting demand index value, FCorrectionCorrecting the frequency, F, for the compressorCorrection 01Correcting the frequency, F, for the first compressorCorrection 02Correcting the frequency, F, for the second compressorCorrection 03Correcting the frequency, F, for the third compressorCorrection 04Correcting frequency sum F for fourth compressorCorrection 05Correcting the frequency for the fifth compressor;
the third correspondence table includes a first defrosting demand index value, a second defrosting demand index value, a third defrosting demand index value, a fourth defrosting demand index value, and a fifth defrosting demand index value, wherein the first defrosting demand index value < the second defrosting demand index value < the third defrosting demand index value < the fourth defrosting demand index value < the fifth defrosting demand index value, specifically, the first defrosting demand index value is 0.65, the second defrosting demand index value is 0.85, the third defrosting demand index value is 0.95, the fourth defrosting demand index value is 1.05, and the fifth defrosting demand index value is 1.25.
When the defrosting demand index value is greater than or equal to a first defrosting demand index value and less than or equal to a second defrosting demand index value, the compressor correction frequency is determined as a first compressor correction frequency;
when the defrosting demand index value is greater than a second defrosting demand index value and less than or equal to a third defrosting demand index value, the compressor correction frequency is determined as a second compressor correction frequency;
when the defrosting demand index value is greater than a third defrosting demand index value and less than or equal to a fourth defrosting demand index value, the compressor correction frequency is determined as a third compressor correction frequency;
when the defrosting demand index value is greater than a fourth defrosting demand index value and less than or equal to a fifth defrosting demand index value, the compressor correction frequency is determined as a fourth compressor correction frequency;
when the defrosting demand index value is greater than a fifth defrosting demand index value, the compressor correction frequency is determined as a fifth compressor correction frequency;
wherein the first compressor correction frequency < the second compressor correction frequency < the third compressor correction frequency < the fourth compressor correction frequency < the fifth compressor correction frequency.
Determining the current compressor operating frequency of the air conditioner according to the compressor correction frequency, wherein the calculation formula of the current compressor operating frequency of the air conditioner is as follows: f ═ FCorrection+FDatumWherein F isCorrectionCorrecting the frequency for the compressor, FDatumAnd the value range of the correction frequency of the air conditioner compressor is greater than or equal to-10 HZ and less than or equal to 10HZ for the reference frequency of the compressor in the defrosting stage.
In the embodiment of the application, through the mapping relation table of the outer tube temperature attenuation rate and the frosting degree, the mapping relation table of the indoor temperature difference value, the indoor temperature and the indoor target temperature drop, the defrosting demand index value and the mapping relation table of the defrosting demand index value and the compressor correction frequency, feasible refinement operation is carried out on the frosting degree, the indoor target temperature drop and the compressor correction frequency, the fineness in the defrosting operation is improved, the condition that in the prior art, the indoor temperature fluctuates greatly in a short time due to the fact that the fluctuation of the indoor temperature is large in the defrosting process is avoided, the operating frequency of the compressor is finely adjusted, the defrosting time is prolonged, and therefore the indoor temperature fluctuation is reduced, the defrosting effect is considered as much as possible, the fluctuation of the temperature is reduced, and the comfort of a user is improved.
Description of the examples of application:
in winter, the air conditioner is in a heating mode, if the temperature is set to be 25 ℃ by a user, when a copper pipe of the outdoor heat exchanger rapidly drops to enter a top-speed attenuation stage due to frosting, the surface temperature of the heat exchanger, namely the temperature of an outer pipe is generally represented by the temperature of a certain copper pipe on the surface of the heat exchanger, at the moment, the frosting degree is judged according to the outer pipe temperature attenuation rate upsilon in the attenuation stage, the judgment mode is detailed in table 1, and if the fixed time step tau is taken to be 6S, the upsilon is assumed to be-0.05 ℃/S at the moment, and the frosting degree belongs to level II.
If the indoor environment temperature is 18 ℃ at the defrosting time, the delta T is more than 5 ℃, and the detail is shown in Table 2, because T is more than or equal to 16 ℃Inner sideThe temperature is less than 20 ℃, and the delta T is more than 5 ℃, which indicates that the current indoor temperature is relatively low, the deviation from the expected temperature of the user is far, the target temperature drop is not too large, and the corresponding indoor target temperature drop is the eighth target temperature drop delta TTarget temperature drop 8Eighth target temperature drop Δ TTarget temperature drop 8Can take the value of 2 ℃;
the current frosting degree is level II, the corresponding frosting degree weight value is 0.8, and the eighth target temperature drop delta TTarget temperature drop 8The value is 2 ℃, the corresponding target temperature drop weight value is 0.8, the detailed value is shown in table 3, and the defrosting demand index value is shown in the table
Figure BDA0003413023360000141
That is, according to Table 4, the defrost demand index value belongs to
Figure BDA0003413023360000142
Figure BDA0003413023360000143
At this time, the correction value for the defrosting frequency is FCorrection 02Will defrost stage reference frequency FDatumPlus a second compressor correction frequency FCorrection 02To determine the current air conditionerAnd (4) the running frequency of the compressor is determined, and the air conditioner can run according to the current running frequency of the compressor.
EXAMPLE III
Corresponding to the embodiment of the application function implementation method, the application also provides an air conditioner defrosting controller, which is used for executing the air conditioner defrosting control method.
The defrosting control method of the air conditioner can refer to the above embodiments, and details are not repeated here.
In the embodiment of the present application, the air conditioner defrosting control method as described above may be performed by an air conditioner defrosting controller.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems and methods according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (12)

1. The defrosting control method of the air conditioner is characterized by comprising the following steps of:
acquiring the grade of frosting degree according to the temperature decay rate of the outer pipe;
acquiring indoor target temperature drop according to an indoor temperature difference value, wherein the indoor temperature difference value is the difference value between the temperature set by a user and the indoor detection temperature; the indoor target temperature drop is a corresponding indoor adjustment target under the current indoor temperature difference and the indoor detection temperature;
and determining the current compressor operating frequency of the air conditioner according to the proportional relation between the frosting degree grade and the indoor target temperature drop.
2. The defrosting control method of an air conditioner according to claim 1, wherein the defrosting control method is characterized in that
The determining the current compressor operating frequency of the air conditioner according to the proportional relationship between the frosting degree grade and the indoor target temperature drop comprises the following steps:
setting a frosting degree weight value according to the frosting degree grade;
setting a target temperature drop weight value according to the indoor target temperature drop;
obtaining a defrosting demand index value according to the proportional relation between the frosting degree weight value and the target temperature drop weight value;
matching a third corresponding relation table to obtain a compressor correction frequency, wherein the third corresponding relation table is a mapping relation table of defrosting demand index values and the compressor correction frequency;
and determining the current compressor operating frequency of the air conditioner according to the corrected compressor frequency.
3. The air conditioner defrost control method of claim 1,
the acquiring of the frosting degree grade according to the temperature decay rate of the outer pipe comprises the following steps:
acquiring the temperature of the outer pipe at a first moment and a second moment within a fixed time step tau;
calculating the temperature decay rate of the outer pipe according to the temperature of the outer pipe at the first moment and the temperature at the second moment;
and matching a first corresponding relation table to obtain the frosting degree grade, wherein the first corresponding relation table is a mapping relation table of the temperature decay rate of the outer pipe and the frosting degree.
4. The air conditioner defrost control method of claim 1,
the obtaining of the indoor target temperature drop according to the indoor temperature difference comprises:
acquiring a user set temperature and an indoor detection temperature, and calculating an indoor temperature difference value of the user set temperature and the indoor detection temperature;
and matching a second corresponding relation table to determine the indoor target temperature drop, wherein the second corresponding relation table is a mapping relation table of the indoor temperature difference, the indoor detection temperature and the indoor target temperature drop.
5. The air conditioner defrost control method of claim 2,
the third correspondence table includes a first defrosting demand index value, a second defrosting demand index value, a third defrosting demand index value, a fourth defrosting demand index value, and a fifth defrosting demand index value;
when the defrosting demand index value is greater than or equal to a first defrosting demand index value and less than or equal to a second defrosting demand index value, the compressor correction frequency is determined as a first compressor correction frequency;
when the defrosting demand index value is greater than a second defrosting demand index value and less than or equal to a third defrosting demand index value, the compressor correction frequency is determined as a second compressor correction frequency;
when the defrosting demand index value is greater than a third defrosting demand index value and less than or equal to a fourth defrosting demand index value, the compressor correction frequency is determined as a third compressor correction frequency;
when the defrosting demand index value is greater than a fourth defrosting demand index value and less than or equal to a fifth defrosting demand index value, the compressor correction frequency is determined as a fourth compressor correction frequency;
when the defrosting demand index value is greater than a fifth defrosting demand index value, the compressor correction frequency is determined as a fifth compressor correction frequency;
wherein the first defrost demand index value < the second defrost demand index value < the third defrost demand index value < the fourth defrost demand index value < the fifth defrost demand index value;
first compressor correction frequency < second compressor correction frequency < third compressor correction frequency < fourth compressor correction frequency < fifth compressor correction frequency.
6. The air conditioner defrost control method of claim 3,
the first corresponding relation table comprises a first decay rate, a second decay rate, a third decay rate and a fourth decay rate;
when the temperature decay rate of the outer pipe is greater than a second decay rate and less than or equal to a first decay rate, determining the frosting degree as a grade I frosting degree;
when the temperature decay rate of the outer pipe is greater than a third decay rate and less than or equal to a second decay rate, determining the frosting degree as a second-level frosting degree;
when the temperature decay rate of the outer pipe is greater than a fourth decay rate and less than or equal to a third decay rate, determining the frosting degree as a grade III frosting degree;
when the temperature decay rate of the outer pipe is less than or equal to a fourth decay rate, determining the frosting degree as a grade IV frosting degree;
wherein the outer tube temperature decay rate is negative, the first decay rate > the second decay rate > the third decay rate > the fourth decay rate.
7. The air conditioner defrost control method of claim 4,
the indoor temperature difference values in the second correspondence table include a first temperature difference value, a second temperature difference value, a third temperature difference value, and a fourth temperature difference value, and the first temperature difference value < the second temperature difference value < the third temperature difference value < the fourth temperature difference value;
the indoor detection temperatures in the second correspondence table include a first indoor temperature, a second indoor temperature, a third indoor temperature, and a fourth indoor temperature, and the first indoor temperature < the second indoor temperature < the third indoor temperature < the fourth indoor temperature;
when the indoor detection temperature is a first indoor temperature, the first temperature difference value, the second temperature difference value, the third temperature difference value and the fourth temperature difference value respectively correspond to a first target temperature drop, a second target temperature drop, a third target temperature drop and a fourth target temperature drop, wherein the first target temperature drop > the second target temperature drop > the third target temperature drop > the fourth target temperature drop;
and when the temperature difference is a first temperature difference, the first indoor temperature, the second indoor temperature, the third indoor temperature and the fourth indoor temperature respectively correspond to a first target temperature drop, a fifth target temperature drop, a ninth target temperature drop and a thirteenth target temperature drop, wherein the first target temperature drop is less than the fifth target temperature drop and less than the ninth target temperature drop and less than the thirteenth target temperature drop.
8. The air conditioner defrost control method of claim 1,
the indoor target temperature drop comprises: and N indoor target temperature drops, wherein the value of any one of the N indoor target temperature drops is greater than or equal to 1 ℃ and less than or equal to 7 ℃.
9. The air conditioner defrost control method of claim 2,
the calculation formula of the current compressor operating frequency of the air conditioner is as follows: f ═ FCorrection+FDatumWherein F isCorrectionCorrecting the frequency for the compressor, FDatumThe compressor reference frequency is the defrost phase.
10. The air conditioner defrost control method of claim 2,
the value range of the correction frequency of the air conditioner compressor is greater than or equal to minus 10HZ and less than or equal to 10 HZ.
11. The air conditioner defrost control method of claim 2,
the setting of the frosting degree weight value according to the frosting degree grade comprises: dividing the frosting degree into a first-level frosting degree, a second-level frosting degree, a third-level frosting degree and a fourth-level frosting degree, wherein the first-level frosting degree < the second-level frosting degree < the third-level frosting degree < the fourth-level frosting degree, and setting the weighted values of the frosting degrees to be 0.7, 0.8, 0.9 and 1 according to the first-level frosting degree, the second-level frosting degree, the third-level frosting degree and the fourth-level frosting degree respectively;
the setting of the target temperature drop weight value according to the indoor target temperature drop comprises: dividing the indoor target temperature drop into a first target temperature drop gradient, a second target temperature drop gradient and a third target temperature drop gradient, wherein the first target temperature drop gradient is less than the second target temperature drop gradient and less than the third target temperature drop gradient, and setting the weighted value of the target temperature drop to be 0.8, 0.9 and 1 according to the first target temperature drop gradient, the second target temperature drop gradient and the third target temperature drop gradient respectively.
12. An air conditioner defrost controller for performing the air conditioner defrost control method of any one of claims 1 to 11.
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CN111174372A (en) * 2019-12-31 2020-05-19 珠海格力电器股份有限公司 Air conditioner control method and device, storage medium and air conditioner
CN111397098A (en) * 2020-04-10 2020-07-10 宁波奥克斯电气股份有限公司 Defrosting control method and device, air conditioner and computer readable storage medium
CN113669850A (en) * 2020-05-14 2021-11-19 青岛海尔空调电子有限公司 Air conditioner and control method thereof
CN111649452A (en) * 2020-05-20 2020-09-11 宁波奥克斯电气股份有限公司 Auxiliary defrosting method for air conditioner, control device, storage medium and air conditioner
CN112484239A (en) * 2020-12-21 2021-03-12 海信（广东）空调有限公司 Air conditioner defrosting method and air conditioner

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