CN108317666A - Defrosting control method, device, air conditioner and computer readable storage medium - Google Patents
Defrosting control method, device, air conditioner and computer readable storage medium Download PDFInfo
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Abstract
The present invention provides a kind of defrosting control method, device, air conditioner and computer readable storage mediums, wherein defrosting control method, including：According to the magnitude relationship between bus current change rate and the first predetermined current change rate, and/or the magnitude relationship between compressor operating current changing rate and the second predetermined current change rate, and/or the magnitude relationship between outdoor unit running current change rate and third predetermined current change rate, it is determined whether carry out defrosting operation.Technical solution through the invention, reduce the influence of outdoor environment temperature defrosting control process, improve the accuracy and reliability of defrosting control program, improve usage experience of the user when air conditioner runs on heating mode, it has been reduced as far as the operation of " frostless defrost ", has reduced the waste of electric energy.
Description
Technical field
The present invention relates to Defrost technology fields, in particular to a kind of defrosting control method, a kind of defrosting control device
With a kind of air conditioner and a kind of computer readable storage medium.
Background technology
In the case of outdoor environment is lower in winter, when heat pump type air conditioner runs on heating mode, outdoor unit condensation
Device can gradually frosting, and frost layer can be increasingly thicker, and then influences the heat exchange of condenser.With thickeing for frost layer, condenser changes
Thermal energy power gradually can lose the ability that heat is absorbed from outdoor environment, to cause the heating effect of complete machine more next worse and worse
It is poorer.When frost layer thickeies to a certain extent, needs to carry out defrost processing, frost layer is melted and then reentered heating shape
State.
During the defrosting of the relevant technologies control, typically by judging what evaporator tube temperature or condenser tube temperature declined
Whether amplitude is more than certain threshold value, to determine the need for defrosting, the range of temperature for judging whether to need to defrost
All be the accumulative amplitude of variation in the cumulative time after taking steady operational status, but the relatively dry water capacity of outdoor air compared with
In the case of low, when outdoor temperature continuously decreases, evaporator temperature or condenser tube temperature also can be with the reductions of outdoor temperature
And reduce, when reduce temperature amplitude meet defrost preset temperature condition when, heat pump type air conditioner can automatically into except
White pattern will enter defrosting mode in the case that frostless at this time, frostless defrost phenomenon occurs, since defrosting mode needs to stop
Therefore the heating process of indoor unit not only affects the usage experience of user, but also also result in waste of energy.
Invention content
The present invention is directed to solve at least one of the technical problems existing in the prior art or related technologies.
For this purpose, it is an object of the present invention to provide a kind of defrosting control methods.
It is another object of the present invention to provide a kind of defrosting control devices.
It is yet a further object of the present invention to provide a kind of air conditioners.
A further object of the present invention is to provide a kind of computer readable storage medium.
To achieve the goals above, the technical solution of the first aspect of the present invention provides a kind of defrosting control method, packet
It includes：According between bus current change rate and the first predetermined current change rate magnitude relationship and/or compressor operating electric current become
Magnitude relationship and/or outdoor unit running current change rate between rate and the second predetermined current change rate and the default electricity of third
Magnitude relationship between rheology rate, it is determined whether carry out defrosting operation.
In the technical scheme, by being closed according to the size between bus current change rate and the first predetermined current change rate
System and/or the magnitude relationship between compressor operating current changing rate and the second predetermined current change rate and/or outdoor unit fortune
Magnitude relationship between row current changing rate and third predetermined current change rate, it is determined whether carry out defrosting operation, reduce room
The influence of external environment temperature defrosting control process, improves the accuracy and reliability of defrosting control program, improves user and exist
Air conditioner runs on usage experience when heating mode, has been reduced as far as the operation of " frostless defrost ", has reduced electric energy
Waste.
In the above-mentioned technical solutions, it is preferable that determine whether to carry out defrosting operation, specifically include：Judge that bus current becomes
Whether rate is less than or equal to the first predetermined current change rate, and is denoted as the first judging result；Judge that compressor operating electric current becomes
Whether rate is less than or equal to the second predetermined current change rate, and is denoted as the second judging result；Judge that outdoor unit running current becomes
Whether rate is less than or equal to third predetermined current change rate, and is denoted as third judging result；If the first judging result, second are sentenced
At least one of disconnected result, third judging result are yes, it is determined that carry out defrosting operation.
In the technical scheme, become with bus current change rate, compressor operating current changing rate, outdoor unit running current
At least one of rate is as the judgement parameter for determining the operation that defrost, from judging that parameter evaded outdoor environment temperature
The influence of degree, reduce because outdoor environment temperature gradually reduces add up temperature drop meet defrosting operating condition caused by nothing
White defrosting operation further improves usage experience of the user when air conditioner runs on heating mode, is reduced as far as
The operation of " frostless defrost ", reduces the waste of electric energy.
Specifically, when air conditioner runs on heating mode, the frost layer on outdoor condenser can gradually increase, and cause cold
Exchange capability of heat between condenser and outdoor environment reduces, and frost layer gradually thickeies at any time, accordingly, air conditioner whole system it is interior
Portion pressure declines, by a large amount of Exemplary statistical data it is found that with frost layer thickening, due to the inside of air conditioner whole system
Pressure declines, and compressor operating electric current, the bus current of access, namely complete machine electric current, also outdoor unit running current all can
It is significant to decline, when bus current change rate is less than or equal to the first predetermined current change rate, or work as compressor operating electric current
When change rate is less than or equal to the second predetermined current change rate or outdoor unit running current change rate is preset less than or equal to third
When current changing rate, it is believed that frosting is more serious, needs to carry out defrosting operation.
Specifically, using bus current change rate, compressor operating current changing rate, outdoor unit running current change rate as
The judgement parameter for determining the operation that defrost, from judging that parameter evaded the influence of outdoor environment temperature, relative to existing
Technology, reduce because outdoor environment temperature gradually reduces add up temperature drop meet defrosting operating condition caused by frostlessization
Frost operation.
Due to the thickening of frost layer, when bus current, compressor operating electric current under heating mode, outdoor unit running current by
What step reduced, so bus current change rate, compressor operating current changing rate, outdoor unit running current change rate are negative value,
Predetermined current change rate is also negative value, the first predetermined current change rate, the second predetermined current change rate, the variation of third predetermined current
Rate is determined by a large amount of Exemplary statistical data, and the heat-exchange system of different types is different, and predetermined current change rate is set
Determining also can be different, and generally less than 0.
In addition, in bus current change rate, compressor operating current changing rate, outdoor unit running current change rate extremely
Few two, as the judgement parameter for carrying out defrosting operation is determined, can further promote the accuracy that defrosting is operated into,
It has been reduced as far as the operation of " frostless defrost ", has reduced the waste of electric energy.
It should also be noted that, preferential carry out judging whether to defrosting operation using compressor operating current changing rate,
General bus current change rate, compressor operating current changing rate, outdoor unit running current change rate are preset according to synchronous
What the period determined, as long as in bus current change rate, compressor operating current changing rate, outdoor unit running current change rate extremely
Few one meets Rule of judgment, it is determined that defrosting operation is carried out, and bus current change rate, compressor operating curent change
Two or three in rate, outdoor unit running current change rate when meeting Rule of judgment, it is believed that and frosting is more serious, relative to
One defrosting dynamics for meeting the defrosting operation determined when Rule of judgment can be larger.
In any of the above-described technical solution, it is preferable that before judging bus current change rate, further include：It is detecting
When running on the duration of heating mode more than or equal to preset duration, bus current is acquired according to predetermined period；Meter in real time
The slope that bus current changes over time is calculated, and is denoted as bus current change rate.
In the technical scheme, the computational methods for further having refined bus current change rate, are run on by detecting
When the duration of heating mode is greater than or equal to preset duration, bus current is acquired according to predetermined period, reduces air conditioner
Heating mode run time is shorter, the generation of defrosting operation false triggering phenomenon caused by stability is poor, by calculating in real time
The slope that bus current changes over time, and it is denoted as bus current change rate, the calculating for improving bus current change rate is timely
Property, accuracy and validity, and then be conducive to accurately control defrosting operation much sooner, reduce and consumed because defrosting not in time
Take the possibility of more electric energy.
Specifically, can be carved at the beginning of predetermined period with finish time acquire bus current, using predetermined period as
Weigh the time variable of bus current change rate, wherein generally in seconds, value range can be set as 6 seconds predetermined period
To 10 seconds, bus current change rate can be determined much sooner in this way.
It should be noted that the acquisition of bus current can by with the current transformer that is connected of busbar of access air conditioner
It realizes.
In any of the above-described technical solution, it is preferable that before judging compressor operating current changing rate, further include：
When detecting that the duration for running on heating mode is greater than or equal to preset duration, compressor operating is acquired according to predetermined period
Electric current；The slope that compressor operating electric current changes over time is calculated in real time, and is denoted as compressor operating current changing rate.
In the technical scheme, the computational methods for further having refined compressor operating current changing rate, by detecting
When running on the duration of heating mode more than or equal to preset duration, compressor operating electric current is acquired according to predetermined period,
Reduce that the air conditioner heat-production mode operation time is shorter, the generation of defrosting operation false triggering phenomenon caused by stability is poor,
The slope changed over time by calculating compressor operating electric current in real time, and it is denoted as compressor operating current changing rate, it improves
Calculating promptness, accuracy and the validity of compressor operating current changing rate, and then be conducive to accurately control much sooner
Defrosting operation reduces the possibility that more electric energy is expended because defrosting not in time.
Specifically, it can be carved at the beginning of predetermined period and acquire compressor operating electric current with finish time, by default week
Phase as weigh compressor operating current changing rate time variable, wherein predetermined period generally in seconds, value range
It can be set as 6 seconds to 10 seconds, can determine compressor operating current changing rate much sooner in this way.
It should be noted that the acquisition of compressor operating electric current can be by the Current Mutual Inductance that is connect with compressor operating circuit
Device is realized.
In any of the above-described technical solution, it is preferable that before judging outdoor unit running current change rate, further include：
When detecting that the duration for running on heating mode is greater than or equal to preset duration, according to predetermined period acquisition outdoor unit operation
Electric current；The slope that outdoor unit running current changes over time is calculated in real time, and is denoted as outdoor unit running current change rate.
In the technical scheme, the computational methods for further having refined outdoor unit running current change rate, by detecting
When running on the duration of heating mode more than or equal to preset duration, outdoor unit running current is acquired according to predetermined period,
Reduce that the air conditioner heat-production mode operation time is shorter, the generation of defrosting operation false triggering phenomenon caused by stability is poor,
The slope changed over time by calculating outdoor unit running current in real time, and it is denoted as outdoor unit running current change rate, it improves
Calculating promptness, accuracy and the validity of outdoor unit running current change rate, and then be conducive to accurately control much sooner
Defrosting operation reduces the possibility that more electric energy is expended because defrosting not in time.
Specifically, it can be carved at the beginning of predetermined period and acquire outdoor unit running current with finish time, by default week
Phase as weigh outdoor unit running current change rate time variable, wherein predetermined period generally in seconds, value range
It can be set as 6 seconds to 10 seconds, can determine outdoor unit running current change rate much sooner in this way.
It should be noted that the acquisition of outdoor unit running current can be by running the Current Mutual Inductance that circuit is connect with outdoor unit
Device is realized.
In any of the above-described technical solution, it is preferable that further include：During carrying out defrosting operation, according to default
Time interval acquires condenser pipe temperature；Judge whether condenser pipe temperature is greater than or equal to preset temperature；In judgement condenser pipe temperature
It when more than or equal to preset temperature, determines and stops defrosting operation, and continue to run with heating mode.
In the technical scheme, condenser pipe temperature is acquired according to prefixed time interval, by comparing condenser pipe temperature and in advance
If the magnitude relationship between temperature, the effect to defrost to condenser pipe is judged indirectly, that is to say, that when condenser pipe temperature is more than or waits
When preset temperature, judge that non-frosting or only a small amount of frost, condenser pipe may be implemented to exchange heat on the corresponding condenser pipe of the temperature
Function.When by judging that condenser pipe temperature is greater than or equal to preset temperature, determining and stopping defrosting operation, and continuing with heating mode
Operation reduces the duration of defrosting operation, reduces power consumption, meanwhile, improve the usage experience of user.
In any of the above-described technical solution, it is preferable that the first predetermined current change rate, the second predetermined current change rate,
Third predetermined current change rate is respectively less than 0.
In the technical scheme, the first predetermined current change rate, the second predetermined current change rate, the variation of third predetermined current
Rate is respectively less than 0, can meet by the conventional heat transfer systems under a large amount of Exemplary statistical data, on the one hand reduce frostless defrost
On the other hand phenomenon reduces defrosting phenomenon not in time.
In any of the above-described technical solution, it is preferable that preset temperature is greater than or equal to 8 DEG C；Preset duration is more than or waits
In 15 minutes；Predetermined period is 6-10 seconds.
In the technical scheme, air conditioner is when entering defrosting operation, and air conditioner overall operation is but indoor in refrigeration mode
Evaporator is closed, and condenser pipe temperature can be stepped up, and frost layer is also gradually melted, by the way that preset temperature to be set greater than or be equal to
At 8 DEG C, is conducive to determine whether defrosting operation is completed, promotes the accuracy judged defrosting result.
It it is 15 minutes or more by the way that preset duration is arranged, due to usually locating when air-conditioner system heating operation 15 minutes or more
In stable state, therefore, continue to judge that bus current change rate, compressor operating current changing rate, outdoor unit running current become
Rate can further improve the accuracy and reliability of defrosting control program, it is severe can especially to effectively reduce winter
The operation of " frostless defrost " unnecessary under environment, the user experience is improved,
It is 6-10 seconds by the way that predetermined period is arranged, can determines bus current change rate, compressor much sooner in this way
Running current change rate, outdoor unit running current change rate further promote the accuracy and validity of defrosting operation.
The technical solution of the second aspect of the present invention proposes a kind of defrosting control device, including：Determination unit is used for basis
Magnitude relationship and/or compressor operating current changing rate between bus current change rate and the first predetermined current change rate with
Magnitude relationship and/or outdoor unit running current change rate between second predetermined current change rate change with third predetermined current
Magnitude relationship between rate, it is determined whether carry out defrosting operation.
In the technical scheme, by being closed according to the size between bus current change rate and the first predetermined current change rate
System and/or the magnitude relationship between compressor operating current changing rate and the second predetermined current change rate and/or outdoor unit fortune
Magnitude relationship between row current changing rate and third predetermined current change rate, it is determined whether carry out defrosting operation, reduce room
The influence of external environment temperature defrosting control process, improves the accuracy and reliability of defrosting control program, improves user and exist
Air conditioner runs on usage experience when heating mode, has been reduced as far as the operation of " frostless defrost ", has reduced electric energy
Waste.
In the above-mentioned technical solutions, it is preferable that determination unit includes：First judgment sub-unit, for judging bus current
Whether change rate is less than or equal to the first predetermined current change rate, and is denoted as the first judging result；Second judgment sub-unit, is used for
Judge whether compressor operating current changing rate is less than or equal to the second predetermined current change rate, and is denoted as the second judging result；
Third judgment sub-unit, for judging whether outdoor unit running current change rate is less than or equal to third predetermined current change rate,
And it is denoted as third judging result；Determination subelement, in the first judging result, the second judging result, third judging result
It is at least one for be when, determination carry out defrosting operation.
In the technical scheme, become with bus current change rate, compressor operating current changing rate, outdoor unit running current
At least one of rate is as the judgement parameter for determining the operation that defrost, from judging that parameter evaded outdoor environment temperature
The influence of degree, reduce because outdoor environment temperature gradually reduces add up temperature drop meet defrosting operating condition caused by nothing
White defrosting operation further improves usage experience of the user when air conditioner runs on heating mode, is reduced as far as
The operation of " frostless defrost ", reduces the waste of electric energy.
Specifically, when air conditioner runs on heating mode, the frost layer on outdoor condenser can gradually increase, and cause cold
Exchange capability of heat between condenser and outdoor environment reduces, and frost layer gradually thickeies at any time, accordingly, air conditioner whole system it is interior
Portion pressure declines, by a large amount of Exemplary statistical data it is found that with frost layer thickening, due to the inside of air conditioner whole system
Pressure declines, and compressor operating electric current, the bus current of access, namely complete machine electric current, also outdoor unit running current all can
It is significant to decline, when bus current change rate is less than or equal to the first predetermined current change rate, or work as compressor operating electric current
When change rate is less than or equal to the second predetermined current change rate or outdoor unit running current change rate is preset less than or equal to third
When current changing rate, it is believed that frosting is more serious, needs to carry out defrosting operation.
Specifically, using bus current change rate, compressor operating current changing rate, outdoor unit running current change rate as
The judgement parameter for determining the operation that defrost, from judging that parameter evaded the influence of outdoor environment temperature, relative to existing
Technology, reduce because outdoor environment temperature gradually reduces add up temperature drop meet defrosting operating condition caused by frostlessization
Frost operation.
Due to the thickening of frost layer, when bus current, compressor operating electric current under heating mode, outdoor unit running current by
What step reduced, so bus current change rate, compressor operating current changing rate, outdoor unit running current change rate are negative value,
Predetermined current change rate is also negative value, the first predetermined current change rate, the second predetermined current change rate, the variation of third predetermined current
Rate is determined by a large amount of Exemplary statistical data, and the heat-exchange system of different types is different, and predetermined current change rate is set
Determining also can be different, and generally less than 0.
In addition, in bus current change rate, compressor operating current changing rate, outdoor unit running current change rate extremely
Few two, as the judgement parameter for carrying out defrosting operation is determined, can further promote the accuracy that defrosting is operated into,
It has been reduced as far as the operation of " frostless defrost ", has reduced the waste of electric energy.
It should also be noted that, preferential carry out judging whether to defrosting operation using compressor operating current changing rate,
General bus current change rate, compressor operating current changing rate, outdoor unit running current change rate are preset according to synchronous
What the period determined, as long as in bus current change rate, compressor operating current changing rate, outdoor unit running current change rate extremely
Few one meets Rule of judgment, it is determined that defrosting operation is carried out, and bus current change rate, compressor operating curent change
Two or three in rate, outdoor unit running current change rate when meeting Rule of judgment, it is believed that and frosting is more serious, relative to
One defrosting dynamics for meeting the defrosting operation determined when Rule of judgment can be larger.
In any of the above-described technical solution, it is preferable that further include：First collecting unit, for running on detecting
When the duration of heating mode is greater than or equal to preset duration, bus current is acquired according to predetermined period；First computing unit,
The slope changed over time for calculating bus current in real time, and it is denoted as bus current change rate.
In the technical scheme, the computational methods for further having refined bus current change rate, are run on by detecting
When the duration of heating mode is greater than or equal to preset duration, bus current is acquired according to predetermined period, reduces air conditioner
Heating mode run time is shorter, the generation of defrosting operation false triggering phenomenon caused by stability is poor, by calculating in real time
The slope that bus current changes over time, and it is denoted as bus current change rate, the calculating for improving bus current change rate is timely
Property, accuracy and validity, and then be conducive to accurately control defrosting operation much sooner, reduce and consumed because defrosting not in time
Take the possibility of more electric energy.
Specifically, can be carved at the beginning of predetermined period with finish time acquire bus current, using predetermined period as
Weigh the time variable of bus current change rate, wherein generally in seconds, value range can be set as 6 seconds predetermined period
To 10 seconds, bus current change rate can be determined much sooner in this way.
It should be noted that the acquisition of bus current can by with the current transformer that is connected of busbar of access air conditioner
It realizes.
In any of the above-described technical solution, it is preferable that further include：Second collecting unit, for running on detecting
When the duration of heating mode is greater than or equal to preset duration, compressor operating electric current is acquired according to predetermined period；Second meter
Unit, the slope changed over time for calculating compressor operating electric current in real time are calculated, and is denoted as compressor operating current changing rate.
In the technical scheme, the computational methods for further having refined compressor operating current changing rate, by detecting
When running on the duration of heating mode more than or equal to preset duration, compressor operating electric current is acquired according to predetermined period,
Reduce that the air conditioner heat-production mode operation time is shorter, the generation of defrosting operation false triggering phenomenon caused by stability is poor,
The slope changed over time by calculating compressor operating electric current in real time, and it is denoted as compressor operating current changing rate, it improves
Calculating promptness, accuracy and the validity of compressor operating current changing rate, and then be conducive to accurately control much sooner
Defrosting operation reduces the possibility that more electric energy is expended because defrosting not in time.
Specifically, it can be carved at the beginning of predetermined period and acquire compressor operating electric current with finish time, by default week
Phase as weigh compressor operating current changing rate time variable, wherein predetermined period generally in seconds, value range
It can be set as 6 seconds to 10 seconds, can determine compressor operating current changing rate much sooner in this way.
It should be noted that the acquisition of compressor operating electric current can be by the Current Mutual Inductance that is connect with compressor operating circuit
Device is realized.
In any of the above-described technical solution, it is preferable that further include：Third collecting unit, for running on detecting
When the duration of heating mode is greater than or equal to preset duration, outdoor unit running current is acquired according to predetermined period；Third meter
Unit is calculated, calculates the slope that outdoor unit running current changes over time in real time, and be denoted as outdoor unit running current change rate.
In the technical scheme, the computational methods for further having refined outdoor unit running current change rate, by detecting
When running on the duration of heating mode more than or equal to preset duration, outdoor unit running current is acquired according to predetermined period,
Reduce that the air conditioner heat-production mode operation time is shorter, the generation of defrosting operation false triggering phenomenon caused by stability is poor,
The slope changed over time by calculating outdoor unit running current in real time, and it is denoted as outdoor unit running current change rate, it improves
Calculating promptness, accuracy and the validity of outdoor unit running current change rate, and then be conducive to accurately control much sooner
Defrosting operation reduces the possibility that more electric energy is expended because defrosting not in time.
Specifically, it can be carved at the beginning of predetermined period and acquire outdoor unit running current with finish time, by default week
Phase as weigh outdoor unit running current change rate time variable, wherein predetermined period generally in seconds, value range
It can be set as 6 seconds to 10 seconds, can determine outdoor unit running current change rate much sooner in this way.
It should be noted that the acquisition of outdoor unit running current can be by running the Current Mutual Inductance that circuit is connect with outdoor unit
Device is realized.
In any of the above-described technical solution, it is preferable that further include：4th collecting unit, for carrying out defrosting operation
During, acquire condenser pipe temperature according to prefixed time interval；Judging unit, for judge condenser pipe temperature whether be more than or
Equal to preset temperature；Determination unit is additionally operable to：When judging that condenser pipe temperature is greater than or equal to preset temperature, determines and stop defrosting
Operation, and continue to run with heating mode.
In the technical scheme, condenser pipe temperature is acquired according to prefixed time interval, by comparing condenser pipe temperature and in advance
If the magnitude relationship between temperature, the effect to defrost to condenser pipe is judged indirectly, that is to say, that when condenser pipe temperature is more than or waits
When preset temperature, judge that non-frosting or only a small amount of frost, condenser pipe may be implemented to exchange heat on the corresponding condenser pipe of the temperature
Function.When by judging that condenser pipe temperature is greater than or equal to preset temperature, determining and stopping defrosting operation, and continuing with heating mode
Operation reduces the duration of defrosting operation, reduces power consumption, meanwhile, improve the usage experience of user.
In any of the above-described technical solution, it is preferable that the first predetermined current change rate, the second predetermined current change rate,
Third predetermined current change rate is respectively less than 0.
In the technical scheme, the first predetermined current change rate, the second predetermined current change rate, the variation of third predetermined current
Rate is respectively less than 0, can meet by the conventional heat transfer systems under a large amount of Exemplary statistical data, on the one hand reduce frostless defrost
On the other hand phenomenon reduces defrosting phenomenon not in time.
In any of the above-described technical solution, it is preferable that preset temperature is greater than or equal to 8 DEG C；Preset duration is more than or waits
In 15 minutes；Predetermined period is 6-10 seconds.
In the technical scheme, air conditioner is when entering defrosting operation, and air conditioner overall operation is but indoor in refrigeration mode
Evaporator is closed, and condenser pipe temperature can be stepped up, and frost layer is also gradually melted, by the way that preset temperature to be set greater than or be equal to
At 8 DEG C, is conducive to determine whether defrosting operation is completed, promotes the accuracy judged defrosting result.
It it is 15 minutes or more by the way that preset duration is arranged, due to usually locating when air-conditioner system heating operation 15 minutes or more
In stable state, therefore, continue to judge that bus current change rate, compressor operating current changing rate, outdoor unit running current become
Rate can further improve the accuracy and reliability of defrosting control program, it is severe can especially to effectively reduce winter
The operation of " frostless defrost " unnecessary under environment, the user experience is improved,
It is 6-10 seconds by the way that predetermined period is arranged, can determines bus current change rate, compressor much sooner in this way
Running current change rate, outdoor unit running current change rate further promote the accuracy and validity of defrosting operation.
Technical solution according to the third aspect of the invention we, provides a kind of air conditioner, and air conditioner includes memory, processing
Device and storage on a memory and the computer program that can run on a processor, when processor executes computer program in realization
The step of stating the defrosting control method of any one of technical solution；And/or the defrosting control including any one of above-mentioned technical proposal
Device processed.
In the technical scheme, air conditioner includes processor, and processor is for executing the computer journey stored in memory
When sequence the step of the defrosting control method of the realization any one that such as above-mentioned technical scheme of the present invention proposes and/or including above-mentioned skill
The defrosting control device of any one of art scheme, therefore the defrosting control of any one of the proposition of the technical solution with aforementioned present invention
Whole advantageous effects of the defrosting control device of any one proposed in method and/or above-mentioned technical proposal processed, it is no longer superfluous herein
It states.
Technical solution according to the fourth aspect of the invention provides a kind of computer readable storage medium, stores thereon
There are computer program, computer program to be performed the defrosting control for realizing any one proposed such as above-mentioned technical scheme of the present invention
Method.
In the technical scheme, computer readable storage medium, is stored thereon with computer program, and computer program is located
The step of managing the defrosting control method for any one for realizing that the technical solution of aforementioned present invention proposes when device executes, therefore with upper
Whole advantageous effects of the defrosting control method of any one of technical scheme of the present invention proposition are stated, details are not described herein.
By above technical scheme, closed according to the size between bus current change rate and the first predetermined current change rate
System and/or the magnitude relationship between compressor operating current changing rate and the second predetermined current change rate and/or outdoor unit fortune
Magnitude relationship between row current changing rate and third predetermined current change rate, it is determined whether carry out defrosting operation, reduce room
The influence of external environment temperature defrosting control process, improves the accuracy and reliability of defrosting control program, improves user and exist
Air conditioner runs on usage experience when heating mode, has been reduced as far as the operation of " frostless defrost ", has reduced electric energy
Waste.
The additional aspect and advantage of the present invention will provide in following description section, will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination following accompanying drawings to embodiment
Obviously and it is readily appreciated that, wherein：
Fig. 1 shows the schematic flow diagram of defrosting control method according to an embodiment of the invention；
Fig. 2A shows the schematic block diagram of defrosting control device according to an embodiment of the invention；
Fig. 2 B show the schematic block diagram of the determination unit in Fig. 2A；
Fig. 3 shows the schematic diagram of air conditioner according to an embodiment of the invention；
Fig. 4 shows the schematic flow diagram of defrosting control method according to another embodiment of the invention；
Fig. 5 shows the schematic flow diagram of defrosting control method according to still a further embodiment；
Fig. 6 shows the schematic flow diagram of defrosting control method according to still another embodiment of the invention；
Fig. 7 shows the schematic flow diagram of defrosting control method according to still another embodiment of the invention；
Fig. 8 shows the curve synoptic diagram of defrosting control program according to an embodiment of the invention.
Specific implementation mode
To better understand the objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and specific real
Mode is applied the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
To be implemented different from other modes described here using other, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
Fig. 1 shows the schematic flow diagram of defrosting control method according to an embodiment of the invention.
As shown in Figure 1, defrosting control method according to an embodiment of the invention, including：S102 changes according to bus current
Magnitude relationship and/or compressor operating current changing rate between rate and the first predetermined current change rate and the second predetermined current
Size between magnitude relationship and/or outdoor unit running current change rate between change rate and third predetermined current change rate
Relationship, it is determined whether carry out defrosting operation.
In this embodiment, by being closed according to the size between bus current change rate and the first predetermined current change rate
System and/or the magnitude relationship between compressor operating current changing rate and the second predetermined current change rate and/or outdoor unit fortune
Magnitude relationship between row current changing rate and third predetermined current change rate, it is determined whether carry out defrosting operation, reduce room
The influence of external environment temperature defrosting control process, improves the accuracy and reliability of defrosting control program, improves user and exist
Air conditioner runs on usage experience when heating mode, has been reduced as far as the operation of " frostless defrost ", has reduced electric energy
Waste.
In the above embodiment, it is preferable that determining whether to carry out defrosting operation, specifically include：Judge that bus current changes
Whether rate is less than or equal to the first predetermined current change rate, and is denoted as the first judging result；Judge compressor operating curent change
Whether rate is less than or equal to the second predetermined current change rate, and is denoted as the second judging result；Judge that outdoor unit running current changes
Whether rate is less than or equal to third predetermined current change rate, and is denoted as third judging result；If the first judging result, second judge
As a result, at least one of third judging result is yes, it is determined that carries out defrosting operation.
In this embodiment, changed with bus current change rate, compressor operating current changing rate, outdoor unit running current
At least one of rate is as the judgement parameter for determining the operation that defrost, from judging that parameter evaded outdoor environment temperature
Influence, reduce because outdoor environment temperature gradually reduces add up temperature drop meet defrosting operating condition caused by it is frostless
Defrosting operation further improves usage experience of the user when air conditioner runs on heating mode, has been reduced as far as " nothing
The operation of white defrost " reduces the waste of electric energy.
Specifically, when air conditioner runs on heating mode, the frost layer on outdoor condenser can gradually increase, and cause cold
Exchange capability of heat between condenser and outdoor environment reduces, and frost layer gradually thickeies at any time, accordingly, air conditioner whole system it is interior
Portion pressure declines, by a large amount of Exemplary statistical data it is found that with frost layer thickening, due to the inside of air conditioner whole system
Pressure declines, and compressor operating electric current, the bus current of access, namely complete machine electric current, also outdoor unit running current all can
It is significant to decline, when bus current change rate is less than or equal to the first predetermined current change rate, or work as compressor operating electric current
When change rate is less than or equal to the second predetermined current change rate or outdoor unit running current change rate is preset less than or equal to third
When current changing rate, it is believed that frosting is more serious, needs to carry out defrosting operation.
Specifically, using bus current change rate, compressor operating current changing rate, outdoor unit running current change rate as
The judgement parameter for determining the operation that defrost, from judging that parameter evaded the influence of outdoor environment temperature, relative to existing
Technology, reduce because outdoor environment temperature gradually reduces add up temperature drop meet defrosting operating condition caused by frostlessization
Frost operation.
Due to the thickening of frost layer, when bus current, compressor operating electric current under heating mode, outdoor unit running current by
What step reduced, so bus current change rate, compressor operating current changing rate, outdoor unit running current change rate are negative value,
Predetermined current change rate is also negative value, the first predetermined current change rate, the second predetermined current change rate, the variation of third predetermined current
Rate is determined by a large amount of Exemplary statistical data, and the heat-exchange system of different types is different, and predetermined current change rate is set
Determining also can be different, and generally less than 0.
In addition, in bus current change rate, compressor operating current changing rate, outdoor unit running current change rate extremely
Few two, as the judgement parameter for carrying out defrosting operation is determined, can further promote the accuracy that defrosting is operated into,
It has been reduced as far as the operation of " frostless defrost ", has reduced the waste of electric energy.
It should also be noted that, preferential carry out judging whether to defrosting operation using compressor operating current changing rate,
General bus current change rate, compressor operating current changing rate, outdoor unit running current change rate are preset according to synchronous
What the period determined, as long as in bus current change rate, compressor operating current changing rate, outdoor unit running current change rate extremely
Few one meets Rule of judgment, it is determined that defrosting operation is carried out, and bus current change rate, compressor operating curent change
Two or three in rate, outdoor unit running current change rate when meeting Rule of judgment, it is believed that and frosting is more serious, relative to
One defrosting dynamics for meeting the defrosting operation determined when Rule of judgment can be larger.
In any of the above-described embodiment, it is preferable that before judging bus current change rate, further include：Detecting fortune
Row acquires bus current when the duration of heating mode is greater than or equal to preset duration, according to predetermined period；It calculates in real time
The slope that bus current changes over time, and it is denoted as bus current change rate.
In this embodiment, the computational methods for further having refined bus current change rate, by detecting the system of running on
When the duration of heat pattern is greater than or equal to preset duration, bus current is acquired according to predetermined period, reduces air conditioner system
Heat pattern run time is shorter, the generation of defrosting operation false triggering phenomenon caused by stability is poor, by calculating mother in real time
The slope that line current changes over time, and be denoted as bus current change rate, improve bus current change rate calculating promptness,
Accuracy and validity, and then be conducive to accurately control defrosting operation much sooner, it reduces and is expended because defrosting not in time
The possibility of more electric energy.
Specifically, can be carved at the beginning of predetermined period with finish time acquire bus current, using predetermined period as
Weigh the time variable of bus current change rate, wherein generally in seconds, value range can be set as 6 seconds predetermined period
To 10 seconds, bus current change rate can be determined much sooner in this way.
It should be noted that the acquisition of bus current can by with the current transformer that is connected of busbar of access air conditioner
It realizes.
In any of the above-described embodiment, it is preferable that before judging compressor operating current changing rate, further include：It is examining
When measuring the duration for running on heating mode more than or equal to preset duration, according to predetermined period acquisition compressor operating electricity
Stream；The slope that compressor operating electric current changes over time is calculated in real time, and is denoted as compressor operating current changing rate.
In this embodiment, the computational methods for further having refined compressor operating current changing rate, by detecting fortune
Row acquires compressor operating electric current, drop when the duration of heating mode is greater than or equal to preset duration, according to predetermined period
The low air conditioner heat-production mode operation time is shorter, and the generation of defrosting operation false triggering phenomenon, leads to caused by stability is poor
It crosses and calculates the slope that compressor operating electric current changes over time in real time, and be denoted as compressor operating current changing rate, improve pressure
Calculating promptness, accuracy and the validity of contracting machine running current change rate, and then be conducive to accurately control much sooner and remove
Frost operation reduces the possibility that more electric energy is expended because defrosting not in time.
Specifically, it can be carved at the beginning of predetermined period and acquire compressor operating electric current with finish time, by default week
Phase as weigh compressor operating current changing rate time variable, wherein predetermined period generally in seconds, value range
It can be set as 6 seconds to 10 seconds, can determine compressor operating current changing rate much sooner in this way.
It should be noted that the acquisition of compressor operating electric current can be by the Current Mutual Inductance that is connect with compressor operating circuit
Device is realized.
In any of the above-described embodiment, it is preferable that before judging outdoor unit running current change rate, further include：It is examining
When measuring the duration for running on heating mode more than or equal to preset duration, according to predetermined period acquisition outdoor unit operation electricity
Stream；The slope that outdoor unit running current changes over time is calculated in real time, and is denoted as outdoor unit running current change rate.
In this embodiment, the computational methods for further having refined outdoor unit running current change rate, by detecting fortune
Row acquires outdoor unit running current, drop when the duration of heating mode is greater than or equal to preset duration, according to predetermined period
The low air conditioner heat-production mode operation time is shorter, and the generation of defrosting operation false triggering phenomenon, leads to caused by stability is poor
It crosses and calculates the slope that outdoor unit running current changes over time in real time, and be denoted as outdoor unit running current change rate, improve room
Calculating promptness, accuracy and the validity of outer machine running current change rate, and then be conducive to accurately control much sooner and remove
Frost operation reduces the possibility that more electric energy is expended because defrosting not in time.
Specifically, it can be carved at the beginning of predetermined period and acquire outdoor unit running current with finish time, by default week
Phase as weigh outdoor unit running current change rate time variable, wherein predetermined period generally in seconds, value range
It can be set as 6 seconds to 10 seconds, can determine outdoor unit running current change rate much sooner in this way.
It should be noted that the acquisition of outdoor unit running current can be by running the Current Mutual Inductance that circuit is connect with outdoor unit
Device is realized.
In any of the above-described embodiment, it is preferable that further include：During carrying out defrosting operation, according to it is default when
Between interval acquisition condenser pipe temperature；Judge whether condenser pipe temperature is greater than or equal to preset temperature；It is big in judgement condenser pipe temperature
It when preset temperature, determines and stops defrosting operation, and continue to run with heating mode.
In this embodiment, condenser pipe temperature is acquired according to prefixed time interval, by comparing condenser pipe temperature and preset
Magnitude relationship between temperature judges the effect to defrost to condenser pipe indirectly, that is to say, that when condenser pipe temperature is greater than or equal to
When preset temperature, judge that heat exchange work(may be implemented in non-frosting or only a small amount of frost, condenser pipe on the corresponding condenser pipe of the temperature
Energy.It when by judging that condenser pipe temperature is greater than or equal to preset temperature, determining and stopping defrosting operation, and continue to transport with heating mode
Row reduces the duration of defrosting operation, reduces power consumption, meanwhile, improve the usage experience of user.
In any of the above-described embodiment, it is preferable that the first predetermined current change rate, the second predetermined current change rate,
Three predetermined current change rates are respectively less than 0.
In this embodiment, the first predetermined current change rate, the second predetermined current change rate, third predetermined current change rate
Respectively less than 0, it can meet by the conventional heat transfer systems under a large amount of Exemplary statistical data, it is existing on the one hand to reduce frostless defrost
As on the other hand reducing defrosting phenomenon not in time.
In any of the above-described embodiment, it is preferable that preset temperature is greater than or equal to 8 DEG C；Preset duration is greater than or equal to
15 minutes；Predetermined period is 6-10 seconds.
In this embodiment, for air conditioner when entering defrosting operation, air conditioner overall operation is in refrigeration mode, but indoor steaming
It sends out device to close, condenser pipe temperature can be stepped up, and frost layer is also gradually melted, by the way that preset temperature to be set greater than to or is equal to 8
DEG C when, be conducive to determine defrosting operation whether complete, promoted to defrosting result judge accuracy.
It it is 15 minutes or more by the way that preset duration is arranged, due to usually locating when air-conditioner system heating operation 15 minutes or more
In stable state, therefore, continue to judge that bus current change rate, compressor operating current changing rate, outdoor unit running current become
Rate can further improve the accuracy and reliability of defrosting control program, it is severe can especially to effectively reduce winter
The operation of " frostless defrost " unnecessary under environment, the user experience is improved,
It is 6-10 seconds by the way that predetermined period is arranged, can determines bus current change rate, compressor much sooner in this way
Running current change rate, outdoor unit running current change rate further promote the accuracy and validity of defrosting operation.
Fig. 2A shows the schematic block diagram of defrosting control device 200 according to an embodiment of the invention.
Fig. 2 B show the schematic block diagram of the determination unit in Fig. 2A.
As shown in Figure 2 A and 2 B, defrosting control device 200 according to an embodiment of the invention, including：Determination unit
202, for according to the magnitude relationship and/or compressor operating between bus current change rate and the first predetermined current change rate
Magnitude relationship and/or outdoor unit running current change rate between current changing rate and the second predetermined current change rate and third
Magnitude relationship between predetermined current change rate, it is determined whether carry out defrosting operation.
In this embodiment, by being closed according to the size between bus current change rate and the first predetermined current change rate
System and/or the magnitude relationship between compressor operating current changing rate and the second predetermined current change rate and/or outdoor unit fortune
Magnitude relationship between row current changing rate and third predetermined current change rate, it is determined whether carry out defrosting operation, reduce room
The influence of external environment temperature defrosting control process, improves the accuracy and reliability of defrosting control program, improves user and exist
Air conditioner runs on usage experience when heating mode, has been reduced as far as the operation of " frostless defrost ", has reduced electric energy
Waste.
In the above embodiment, it is preferable that determination unit 202 includes：First judgment sub-unit 2022, for judging busbar
Whether current changing rate is less than or equal to the first predetermined current change rate, and is denoted as the first judging result；Second judgment sub-unit
2024, for judging whether compressor operating current changing rate is less than or equal to the second predetermined current change rate, and it is denoted as second
Judging result；Third judgment sub-unit 2026, for judging it is pre- whether outdoor unit running current change rate is less than or equal to third
If current changing rate, and it is denoted as third judging result；Determination subelement 2028, for judging knot in the first judging result, second
At least one of fruit, third judging result are when being, determination carries out defrosting operation.
In this embodiment, changed with bus current change rate, compressor operating current changing rate, outdoor unit running current
At least one of rate is as the judgement parameter for determining the operation that defrost, from judging that parameter evaded outdoor environment temperature
Influence, reduce because outdoor environment temperature gradually reduces add up temperature drop meet defrosting operating condition caused by it is frostless
Defrosting operation further improves usage experience of the user when air conditioner runs on heating mode, has been reduced as far as " nothing
The operation of white defrost " reduces the waste of electric energy.
Specifically, when air conditioner runs on heating mode, the frost layer on outdoor condenser can gradually increase, and cause cold
Exchange capability of heat between condenser and outdoor environment reduces, and frost layer gradually thickeies at any time, accordingly, air conditioner whole system it is interior
Portion pressure declines, by a large amount of Exemplary statistical data it is found that with frost layer thickening, due to the inside of air conditioner whole system
Pressure declines, and compressor operating electric current, the bus current of access, namely complete machine electric current, also outdoor unit running current all can
It is significant to decline, when bus current change rate is less than or equal to the first predetermined current change rate, or work as compressor operating electric current
When change rate is less than or equal to the second predetermined current change rate or outdoor unit running current change rate is preset less than or equal to third
When current changing rate, it is believed that frosting is more serious, needs to carry out defrosting operation.
Specifically, using bus current change rate, compressor operating current changing rate, outdoor unit running current change rate as
The judgement parameter for determining the operation that defrost, from judging that parameter evaded the influence of outdoor environment temperature, relative to existing
Technology, reduce because outdoor environment temperature gradually reduces add up temperature drop meet defrosting operating condition caused by frostlessization
Frost operation.
Due to the thickening of frost layer, when bus current, compressor operating electric current under heating mode, outdoor unit running current by
What step reduced, so bus current change rate, compressor operating current changing rate, outdoor unit running current change rate are negative value,
Predetermined current change rate is also negative value, the first predetermined current change rate, the second predetermined current change rate, the variation of third predetermined current
Rate is determined by a large amount of Exemplary statistical data, and the heat-exchange system of different types is different, and predetermined current change rate is set
Determining also can be different, and generally less than 0.
In addition, in bus current change rate, compressor operating current changing rate, outdoor unit running current change rate extremely
Few two, as the judgement parameter for carrying out defrosting operation is determined, can further promote the accuracy that defrosting is operated into,
It has been reduced as far as the operation of " frostless defrost ", has reduced the waste of electric energy.
It should also be noted that, preferential carry out judging whether to defrosting operation using compressor operating current changing rate,
General bus current change rate, compressor operating current changing rate, outdoor unit running current change rate are preset according to synchronous
What the period determined, as long as in bus current change rate, compressor operating current changing rate, outdoor unit running current change rate extremely
Few one meets Rule of judgment, it is determined that defrosting operation is carried out, and bus current change rate, compressor operating curent change
Two or three in rate, outdoor unit running current change rate when meeting Rule of judgment, it is believed that and frosting is more serious, relative to
One defrosting dynamics for meeting the defrosting operation determined when Rule of judgment can be larger.
In the above embodiment, it is preferable that further including：First collecting unit 204, for running on heating mould detecting
When the duration of formula is greater than or equal to preset duration, bus current is acquired according to predetermined period；First computing unit 206 is used
In the slope that calculating bus current changes over time in real time, and it is denoted as bus current change rate.
In this embodiment, the computational methods for further having refined bus current change rate, by detecting the system of running on
When the duration of heat pattern is greater than or equal to preset duration, bus current is acquired according to predetermined period, reduces air conditioner system
Heat pattern run time is shorter, the generation of defrosting operation false triggering phenomenon caused by stability is poor, by calculating mother in real time
The slope that line current changes over time, and be denoted as bus current change rate, improve bus current change rate calculating promptness,
Accuracy and validity, and then be conducive to accurately control defrosting operation much sooner, it reduces and is expended because defrosting not in time
The possibility of more electric energy.
Specifically, can be carved at the beginning of predetermined period with finish time acquire bus current, using predetermined period as
Weigh the time variable of bus current change rate, wherein generally in seconds, value range can be set as 6 seconds predetermined period
To 10 seconds, bus current change rate can be determined much sooner in this way.
It should be noted that the acquisition of bus current can by with the current transformer that is connected of busbar of access air conditioner
It realizes.
In any of the above-described embodiment, it is preferable that further include：Second collecting unit 208, for running on detecting
When the duration of heating mode is greater than or equal to preset duration, compressor operating electric current is acquired according to predetermined period；Second meter
Unit 210, the slope changed over time for calculating compressor operating electric current in real time are calculated, and is denoted as compressor operating curent change
Rate.
In this embodiment, the computational methods for further having refined compressor operating current changing rate, by detecting fortune
Row acquires compressor operating electric current, drop when the duration of heating mode is greater than or equal to preset duration, according to predetermined period
The low air conditioner heat-production mode operation time is shorter, and the generation of defrosting operation false triggering phenomenon, leads to caused by stability is poor
It crosses and calculates the slope that compressor operating electric current changes over time in real time, and be denoted as compressor operating current changing rate, improve pressure
Calculating promptness, accuracy and the validity of contracting machine running current change rate, and then be conducive to accurately control much sooner and remove
Frost operation reduces the possibility that more electric energy is expended because defrosting not in time.
Specifically, it can be carved at the beginning of predetermined period and acquire compressor operating electric current with finish time, by default week
Phase as weigh compressor operating current changing rate time variable, wherein predetermined period generally in seconds, value range
It can be set as 6 seconds to 10 seconds, can determine compressor operating current changing rate much sooner in this way.
It should be noted that the acquisition of compressor operating electric current can be by the Current Mutual Inductance that is connect with compressor operating circuit
Device is realized.
In any of the above-described embodiment, it is preferable that further include：Third collecting unit 212, for running on detecting
When the duration of heating mode is greater than or equal to preset duration, outdoor unit running current is acquired according to predetermined period；Third meter
Unit 214 is calculated, calculates the slope that outdoor unit running current changes over time in real time, and be denoted as outdoor unit running current change rate.
In this embodiment, the computational methods for further having refined outdoor unit running current change rate, by detecting fortune
Row acquires outdoor unit running current, drop when the duration of heating mode is greater than or equal to preset duration, according to predetermined period
The low air conditioner heat-production mode operation time is shorter, and the generation of defrosting operation false triggering phenomenon, leads to caused by stability is poor
It crosses and calculates the slope that outdoor unit running current changes over time in real time, and be denoted as outdoor unit running current change rate, improve room
Calculating promptness, accuracy and the validity of outer machine running current change rate, and then be conducive to accurately control much sooner and remove
Frost operation reduces the possibility that more electric energy is expended because defrosting not in time.
Specifically, it can be carved at the beginning of predetermined period and acquire outdoor unit running current with finish time, by default week
Phase as weigh outdoor unit running current change rate time variable, wherein predetermined period generally in seconds, value range
It can be set as 6 seconds to 10 seconds, can determine outdoor unit running current change rate much sooner in this way.
It should be noted that the acquisition of outdoor unit running current can be by running the Current Mutual Inductance that circuit is connect with outdoor unit
Device is realized.
In any of the above-described embodiment, it is preferable that further include：4th collecting unit 216, for carrying out defrosting operation
During, acquire condenser pipe temperature according to prefixed time interval；Judging unit 218, for judging whether condenser pipe temperature is big
In or equal to preset temperature；Determination unit 202 is additionally operable to：When judging that condenser pipe temperature is greater than or equal to preset temperature, determine
Stop defrosting operation, and continues to run with heating mode.
In this embodiment, condenser pipe temperature is acquired according to prefixed time interval, by comparing condenser pipe temperature and preset
Magnitude relationship between temperature judges the effect to defrost to condenser pipe indirectly, that is to say, that when condenser pipe temperature is greater than or equal to
When preset temperature, judge that heat exchange work(may be implemented in non-frosting or only a small amount of frost, condenser pipe on the corresponding condenser pipe of the temperature
Energy.It when by judging that condenser pipe temperature is greater than or equal to preset temperature, determining and stopping defrosting operation, and continue to transport with heating mode
Row reduces the duration of defrosting operation, reduces power consumption, meanwhile, improve the usage experience of user.
In any of the above-described embodiment, it is preferable that the first predetermined current change rate, the second predetermined current change rate,
Three predetermined current change rates are respectively less than 0.
In this embodiment, the first predetermined current change rate, the second predetermined current change rate, third predetermined current change rate
Respectively less than 0, it can meet by the conventional heat transfer systems under a large amount of Exemplary statistical data, it is existing on the one hand to reduce frostless defrost
As on the other hand reducing defrosting phenomenon not in time.
In any of the above-described embodiment, it is preferable that preset temperature is greater than or equal to 8 DEG C；Preset duration is greater than or equal to
15 minutes；Predetermined period is 6-10 seconds.
In this embodiment, for air conditioner when entering defrosting operation, air conditioner overall operation is in refrigeration mode, but indoor steaming
It sends out device to close, condenser pipe temperature can be stepped up, and frost layer is also gradually melted, by the way that preset temperature to be set greater than to or is equal to 8
DEG C when, be conducive to determine defrosting operation whether complete, promoted to defrosting result judge accuracy.
It it is 15 minutes or more by the way that preset duration is arranged, due to usually locating when air-conditioner system heating operation 15 minutes or more
In stable state, therefore, continue to judge that bus current change rate, compressor operating current changing rate, outdoor unit running current become
Rate can further improve the accuracy and reliability of defrosting control program, it is severe can especially to effectively reduce winter
The operation of " frostless defrost " unnecessary under environment, the user experience is improved,
It is 6-10 seconds by the way that predetermined period is arranged, can determines bus current change rate, compressor much sooner in this way
Running current change rate, outdoor unit running current change rate further promote the accuracy and validity of defrosting operation.
Fig. 3 shows the schematic block diagram of air conditioner 300 according to an embodiment of the invention.
As shown in figure 3, air conditioner 300 according to an embodiment of the invention, including：Defrosting control as shown in Figure 2
Device 200；The defrosting control that memory 302, processor 304 and being stored in can be run on memory 302 and on processor 304
Program, defrosting control program realize the step for the defrosting control method that any of the above-described embodiment limits when being executed by processor 304
Suddenly.
Computer readable storage medium according to an embodiment of the invention is stored thereon with computer program, computer journey
Sequence is performed the defrosting control method for realizing any one proposed such as embodiments of the invention described above.
Embodiment one：
Fig. 4 shows the schematic flow diagram of defrosting control method according to another embodiment of the invention.
As shown in figure 4, defrosting control method according to another embodiment of the invention includes：
S402 judges whether air conditioner actual motion pattern is heating mode, if so, S404 is executed, if it is not, then holding again
Row S402；
S404, judges whether current operating conditions maintain 15 minutes or more, including indoor and outdoor machine rotation speed of fan and compressor
Operating status, if so, S406 is executed, if it is not, then re-executing S402；
S406 judges compressor operating electric current descending slope △ Ia/ △ t namely compressor operating current changing rate, if
Refer to the second predetermined current change rate less than Ka, Ka, be a negative, if so, S408 is executed, if it is not, then re-executing S402；
S408 carries out defrosting operation；
S410 judges condenser pipe temperature T3Whether T is more than, T refers to preset temperature, and T is traditionally arranged to be more than 8 DEG C, if so,
S412 is executed, if it is not, then re-executing S410；
S412 stops defrosting operation, is run into normal heating mode.
Embodiment two：
Fig. 5 shows the schematic flow diagram of defrosting control method according to still a further embodiment.
As shown in figure 5, defrosting control method according to still a further embodiment, including：
S502 judges whether air conditioner actual motion pattern is heating mode, if so, S504 is executed, if it is not, then holding again
Row S502；
S504, judges whether current operating conditions maintain 15 minutes or more, including indoor and outdoor machine rotation speed of fan and compressor
Operating status, if so, S506 is executed, if it is not, then re-executing S502；
S506 judges bus current descending slope △ Ib/ △ t namely bus current change rate, if is less than Kb, Kb is
Refer to the first predetermined current change rate, be a negative, if so, S508 is executed, if it is not, then re-executing S502；
S508 carries out defrosting operation；
S510 judges condenser pipe temperature T3Whether T is more than, T refers to preset temperature, and T is traditionally arranged to be more than 8 DEG C, if so,
S512 is executed, if it is not, then re-executing S510；
S512 stops defrosting operation, is run into normal heating mode.
Embodiment three：
Fig. 6 shows the schematic flow diagram of defrosting control method according to still another embodiment of the invention.
As shown in fig. 6, defrosting control method according to still another embodiment of the invention, including：
S602 judges whether air conditioner actual motion pattern is heating mode, if so, S604 is executed, if it is not, then holding again
Row S602；
S604, judges whether current operating conditions maintain 15 minutes or more, including indoor and outdoor machine rotation speed of fan and compressor
Operating status, if so, S606 is executed, if it is not, then re-executing S602；
S606 judges outdoor unit running current descending slope △ Ic/ △ t namely outdoor unit running current change rate, if
Refer to third predetermined current change rate less than Kc, Kc, be a negative, if so, S608 is executed, if it is not, then re-executing S602；
S608 carries out defrosting operation；
S610 judges condenser pipe temperature T3Whether T is more than, T refers to preset temperature, and T is traditionally arranged to be more than 8 DEG C, if so,
S612 is executed, if it is not, then re-executing S610；
S612 stops defrosting operation, is run into normal heating mode.
Example IV：
Fig. 7 shows the schematic flow diagram of defrosting control method according to still another embodiment of the invention.
As shown in fig. 7, defrosting control method according to still another embodiment of the invention, including：
S702 judges whether air conditioner actual motion pattern is heating mode, if so, S704 is executed, if it is not, then holding again
Row S702；
S704, judges whether current operating conditions maintain 15 minutes or more, including indoor and outdoor machine rotation speed of fan and compressor
Operating status, if so, S706 is executed, if it is not, then re-executing S702；
S706, according to predetermined period acquisition bus current, compressor operating electric current, outdoor unit running current；
S708, calculate in real time slope that the bus current slope, the compressor operating electric current that change over time change over time,
The slope that outdoor unit running current changes over time, and be denoted as respectively bus current change rate, compressor operating current changing rate,
Outdoor unit running current change rate；
S710, judges whether bus current change rate is less than or equal to the first predetermined current change rate, if so, executing
S712, if it is not, then re-executing S702；
S712, judges whether compressor operating current changing rate is less than or equal to the second predetermined current change rate, if so, holding
Row S714, if it is not, then re-executing S702；
S714, judges whether outdoor unit running current change rate is less than or equal to third predetermined current change rate, if so, holding
Row S716, if it is not, then re-executing S702；
S716 carries out defrosting operation；
S718 judges condenser pipe temperature T3Whether T is more than, T refers to preset temperature, and T is traditionally arranged to be more than 8 DEG C, if so,
S720 is executed, if it is not, then re-executing S718；
S720 stops defrosting operation, is run into normal heating mode.
Embodiment five：
Fig. 8 shows the curve synoptic diagram of defrosting control program according to an embodiment of the invention.
As shown in figure 8, at 4 points in northerly afternoon at 7 points in afternoon, open air conditioner, run on heating mode, it is outdoor at this time
Environment temperature gradually reduces at any time, and also t is gradually reduced compressor operating electric current Ia at any time, wherein the A points corresponding time is
tA, corresponding compressor operating current changing rate is KA, the B points corresponding time is tB, corresponding compressor operating current changing rate
For KB。
In the prior art, using judging whether the amplitude that evaporator temperature or condenser tube temperature decline is more than certain threshold
Value, when determining the need for defrosting, for A points, since outdoor temperature gradually reduces at any time, to lead to evaporator temperature or cold
Condenser tube temperature and its fall reach the condition into defrosting, and have only tied a small amount of frost on condenser at this time or even do not tied
Frost, the case where causing air conditioner to enter " frostless defrost ", and in B points, on condenser frosting need to carry out defrosting operation,
The control of B points enters defrosting operation can be more acurrate and effective.
Whether the present embodiment is less than or equal to the second predetermined current change rate using compressor operating current changing rate, comes true
It is fixed whether to carry out defrosting operation, do not consider evaporator temperature, condenser tube temperature the accumulative range of decrease, in this way in A points, although by
The influence of outdoor environment temperature adds up fall and is more than certain threshold value, but corresponding compressor air-discharging current changing rate KAStill
So it is more than the second predetermined current change rate Ka, defrosting operation will not be carried out.That is become using detection compressor operating electric current
Rate, in A points, the case where air conditioner will not enter " frostless defrost ", and in B points, the compressor exhaust temperature change rate of B points
KBLess than preset temperature change rate Ka, then air conditioner is in time tBDefrosting operation is proceeded by, so as to avoid air conditioner in the time
tATo tBBetween carry out " frostless defrost " operation, improve the usage experience of user, meanwhile, reduce waste of energy.
In addition, when detecting that condenser pipe temperature restores to more than or when equal to 8 DEG C, stop defrosting operation, and reenter
Heating mode is run.
Be described in detail technical scheme of the present invention above in association with attached drawing, the present invention propose a kind of defrosting control method,
Defrost control device, air conditioner and computer readable storage medium, by being less than in the bus current change rate for detecting access
Or when equal to the first predetermined current change rate, and/or detecting that it is pre- that compressor operating current changing rate is less than or equal to second
If when current changing rate, and/or detecting outdoor unit running current change rate less than or equal to third predetermined current change rate
When, determination carries out defrosting operation, reduces the influence of outdoor environment temperature defrosting control process, improves defrosting control program
Accuracy and reliability improves usage experience of the user when air conditioner runs on heating mode, has been reduced as far as " nothing
The operation of white defrost " reduces the waste of electric energy.
Step in the method for the present invention can be sequentially adjusted, combined, and deleted according to actual needs.
Unit in apparatus of the present invention can be combined, divided, and deleted according to actual needs.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can be stored in a computer readable storage medium, storage
Medium include read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory,
RAM), programmable read only memory (Programmable Read-only Memory, PROM), erasable programmable is read-only deposits
Reservoir (Erasable Programmable Read Only Memory, EPROM), disposable programmable read-only memory (One-
Time Programmable Read-Only Memory, OTPROM), the electronics formula of erasing can make carbon copies read-only memory
(Electrically-Erasable Programmable Read-Only Memory, EEPROM), CD-ROM (Compact
Disc Read-Only Memory, CD-ROM) or other disk storages, magnetic disk storage, magnetic tape storage or can
Any other computer-readable medium for carrying or storing data.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (18)
1. a kind of defrosting control method, which is characterized in that including：
According to the magnitude relationship and/or compressor operating electric current between bus current change rate and the first predetermined current change rate
Magnitude relationship and/or outdoor unit running current change rate and third between change rate and the second predetermined current change rate is default
Magnitude relationship between current changing rate, it is determined whether carry out defrosting operation.
2. defrosting control method according to claim 1, which is characterized in that described to determine whether to carry out defrosting operation, tool
Body includes：
Judge whether the bus current change rate is less than or equal to the first predetermined current change rate, and is denoted as the first judgement
As a result；
Judge whether the compressor operating current changing rate is less than or equal to the second predetermined current change rate, and is denoted as the
Two judging results；
Judge whether the outdoor unit running current change rate is less than or equal to the third predetermined current change rate, and is denoted as the
Three judging results；
If at least one of first judging result, second judging result, described third judging result are yes, really
Surely the defrosting operation is carried out.
3. defrosting control method according to claim 2, which is characterized in that before judging the bus current change rate,
Further include：
When detecting that the duration for running on heating mode is greater than or equal to preset duration, busbar is acquired according to predetermined period
Electric current；
The slope that the bus current changes over time is calculated in real time, and is denoted as the bus current change rate.
4. defrosting control method according to claim 2, which is characterized in that judging the compressor operating curent change
Before rate, further include：
When detecting that the duration for running on heating mode is greater than or equal to preset duration, acquires and compress according to predetermined period
Machine running current；
The slope that the compressor operating electric current changes over time is calculated in real time, and is denoted as the compressor operating curent change
Rate.
5. defrosting control method according to claim 2, which is characterized in that judging the outdoor unit running current variation
Before rate, further include：
Detect the duration for running on heating mode be greater than or equal to preset duration when, according to predetermined period collection room outside
Machine running current；
The slope that the outdoor unit running current changes over time is calculated in real time, and is denoted as the outdoor unit running current variation
Rate.
6. defrosting control method according to any one of claim 3 to 5, which is characterized in that further include：
During carrying out the defrosting operation, condenser pipe temperature is acquired according to prefixed time interval；
Judge whether the condenser pipe temperature is greater than or equal to preset temperature；
When judging that the condenser pipe temperature is greater than or equal to the preset temperature, determines and stop the defrosting operation, and continue
It is run with the heating mode.
7. defrosting control method according to claim 6, which is characterized in that
The first predetermined current change rate, the second predetermined current change rate, the third predetermined current change rate are small
In 0.
8. defrosting control method according to claim 6, which is characterized in that
The preset temperature is greater than or equal to 8 DEG C；The preset duration is greater than or equal to 15 minutes；The predetermined period is 6-10
Second.
9. a kind of defrosting control device, which is characterized in that including：
Determination unit, for according to the magnitude relationship between bus current change rate and the first predetermined current change rate, and/or pressure
Magnitude relationship between contracting machine running current change rate and the second predetermined current change rate and/or the variation of outdoor unit running current
Magnitude relationship between rate and third predetermined current change rate, it is determined whether carry out defrosting operation.
10. defrosting control device according to claim 9, which is characterized in that the determination unit includes：
First judgment sub-unit becomes for judging whether the bus current change rate is less than or equal to first predetermined current
Rate, and it is denoted as the first judging result；
Second judgment sub-unit, for judging it is default whether the compressor operating current changing rate is less than or equal to described second
Current changing rate, and it is denoted as the second judging result；
Third judgment sub-unit, for judging it is default whether the outdoor unit running current change rate is less than or equal to the third
Current changing rate, and it is denoted as third judging result；
Determination subelement is used in first judging result, second judging result, the third judging result extremely
Few one carries out the defrosting operation when being, to determine.
11. defrosting control device according to claim 10, which is characterized in that further include：
First collecting unit, for when detecting that the duration for running on heating mode is greater than or equal to preset duration, pressing
Bus current is acquired according to predetermined period；
First computing unit, the slope changed over time for calculating the bus current in real time, and it is denoted as the bus current
Change rate.
12. defrosting control device according to claim 10, which is characterized in that further include：
Second collecting unit, for when detecting that the duration for running on heating mode is greater than or equal to preset duration, pressing
Compressor operating electric current is acquired according to predetermined period；
Second computing unit, the slope changed over time for calculating the compressor operating electric current in real time, and it is denoted as the pressure
Contracting machine running current change rate.
13. defrosting control device according to claim 10, which is characterized in that further include：
Third collecting unit, for when detecting that the duration for running on heating mode is greater than or equal to preset duration, pressing
Outdoor unit running current is acquired according to predetermined period；
Third computing unit calculates the slope that the outdoor unit running current changes over time, and is denoted as the outdoor unit in real time
Running current change rate.
14. the defrosting control device according to any one of claim 11 to 13, which is characterized in that further include：
4th collecting unit, for during carrying out the defrosting operation, condensation tube temperature to be acquired according to prefixed time interval
Degree；
Judging unit, for judging whether the condenser pipe temperature is greater than or equal to preset temperature；
The determination unit is additionally operable to：When judging that the condenser pipe temperature is greater than or equal to the preset temperature, determines and stop
The defrosting operation, and continue to run with the heating mode.
15. defrosting control device according to claim 14, which is characterized in that
The first predetermined current change rate, the second predetermined current change rate, the third predetermined current change rate are small
In 0.
16. defrosting control device according to claim 14, which is characterized in that
The preset temperature is greater than or equal to 8 DEG C；The preset duration is greater than or equal to 15 minutes；The predetermined period is 6-10
Second.
17. a kind of air conditioner, the air conditioner includes memory, processor and is stored on the memory and can be at the place
The computer program run on reason device, which is characterized in that
The processor realizes such as defrosting controlling party described in any item of the claim 1 to 8 when executing the computer program
The step of method limits；
And/or include defrosting control device as described in any one of claim 9 to 16.
18. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program
It is realized such as the step of defrosting control method described in any item of the claim 1 to 8 when being executed by processor.
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| CN201810183051.0A CN108317666A (en) | 2018-03-06 | 2018-03-06 | Defrosting control method, device, air conditioner and computer readable storage medium |
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| CN110567098A (en) * | 2019-09-23 | 2019-12-13 | 宁波奥克斯电气股份有限公司 | Defrosting control method and device, air conditioner and storage medium |
| CN110594958A (en) * | 2019-08-23 | 2019-12-20 | 宁波奥克斯电气股份有限公司 | Control method for avoiding mistaken defrosting, storage medium, controller and air conditioner |
| CN110631210A (en) * | 2019-09-30 | 2019-12-31 | 广东美的制冷设备有限公司 | Air conditioner, method of controlling the same, and computer-readable storage medium |
| CN110736218A (en) * | 2019-09-20 | 2020-01-31 | 青岛海尔空调器有限总公司 | Anti-freezing control method for indoor unit of air conditioner |
| CN111336648A (en) * | 2020-03-16 | 2020-06-26 | 宁波奥克斯电气股份有限公司 | Air conditioner defrosting control method and device, storage medium and air conditioner |
| WO2020224502A1 (en) * | 2019-05-06 | 2020-11-12 | 青岛海尔空调器有限总公司 | Control method and apparatus for air conditioner defrosting, and air conditioner |
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