CN103925675B - Air-conditioning enters the determination methods of defrosting mode, judgment means and air-conditioning - Google Patents
Air-conditioning enters the determination methods of defrosting mode, judgment means and air-conditioning Download PDFInfo
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Abstract
The invention provides a kind of air-conditioning and enter the control method of defrosting mode, including: judge step, when air-conditioning is in heating mode, it is judged that whether the rotating speed of the outdoor fan of air-conditioning is equal to rotating speed of target；Detecting step, when the rotating speed of the outdoor fan of described air-conditioning is equal to described rotating speed of target, starts to detect the current value in described outdoor fan；Process step, when the variation tendency described current value being detected is to be transferred to increase by reduction, starts defrosting mode and defrost.Correspondingly, the invention allows for a kind of air-conditioning and enter the control device of defrosting mode.By technical scheme, can judge that air-conditioning starts the opportunity of defrosting the most accurately, thus avoid the shortcomings such as frostless defrosting, improve the experience of user.
Description
Technical field
The present invention relates to air-conditioner defrosting technical field, enter defrosting mould in particular to a kind of air-conditioning
The determination methods of formula, air-conditioning enter the judgment means of defrosting mode and a kind of air-conditioning.
Background technology
Existing air-conditioning refrigeration system include compressor, indoor fan, outdoor fan, outdoor heat exchanger,
Throttling arrangement, indoor heat exchanger and control device.When air-conditioning heating runs, outdoor heat exchanger temperature
Ratio is relatively low, and when outside air temperature is relatively low and humidity is bigger, outdoor heat exchanger there will be frost, with
The increase of frost, the heating capacity of air-conditioning can be gradually lowered.Therefore, it is necessary to promptly and accurately judge knot
Frost, and defrost.The existing technology judging to enter defrosting there are disadvantages that, such as there will be
The problems such as frostless defrost.
Therefore, how can judge to enter the opportunity of Defrost operation accurately, become the most urgently to be resolved hurrily
Technical problem.
Summary of the invention
It is contemplated that at least solve one of technical problem present in prior art or correlation technique.
To this end, it is an object of the present invention to propose a kind of air-conditioning to enter the judgement side of defrosting mode
Method.
Further object is that proposing a kind of air-conditioning enters the judgment means of defrosting mode.
A further object of the present invention is to propose a kind of air-conditioning.
For achieving the above object, embodiment according to the first aspect of the invention, it is proposed that a kind of air-conditioning
Enter the determination methods of defrosting mode, including: judge step, when air-conditioning is in heating mode, sentence
Whether the rotating speed of the outdoor fan of disconnected air-conditioning is equal to rotating speed of target；Detecting step, in the room of described air-conditioning
When the rotating speed of outer blower fan is equal to described rotating speed of target, start to detect the current value in described outdoor fan；
Processing step, when the variation tendency described current value being detected is to be transferred to increase by reduction, startup removes
Frost pattern defrosts.
Air-conditioning enters the determination methods of defrosting mode according to an embodiment of the invention, is in system at air-conditioning
Heat pattern, and when the rotating speed of outdoor fan is rotating speed of target, the electric current of detection outdoor fan, if
Detect that curent change trend for be transferred to increase by reduction, then proceeds by defrosting, as such, it is possible to accurate
True judges that air-conditioning starts the opportunity of defrosting, thus avoids the shortcomings such as frostless defrosting, improves user
Experience.
It addition, air-conditioning according to the above embodiment of the present invention enters the determination methods of defrosting mode, also may be used
To have following additional technical characteristic:
According to one embodiment of present invention, described detecting step specifically includes: acquisition step, with in advance
If time interval, gather the current value of described outdoor fan.
According to one embodiment of present invention, described process step specifically includes: calculation procedure, from adopting
Collect to current value in extract the adjacent current value of 2K, and calculate front K first collected
The meansigma methods that current value is corresponding, is denoted as the first average current value, and after rear K the electric current that collect
The meansigma methods that value is corresponding, is denoted as the second average current value, and wherein, K is the natural number of non-zero；Relatively
Step, relatively described first average current value and the size of described second average current value；Perform step,
When described first average current value is more than described second average current value, electric current downward trend enumerator
Add 1；When described first average current value is less than described second average current value, electric current ascendant trend
Enumerator adds 1.
Air-conditioning enters the determination methods of defrosting mode according to an embodiment of the invention, gathers described outdoor
Multiple current values of blower fan, and calculate the meansigma methods of multiple electric current, and then compare, it is judged that electricity
The variation tendency of stream, so, improves the accuracy of judgement, it is to avoid the erroneous judgement that random fluctuation causes.
According to one embodiment of present invention, described execution step also includes: judge that described electric current declines
Whether the value of trend enumerator is more than the first preset value, little in the value of described electric current downward trend enumerator
When described first preset value, return to described acquisition step, count in described electric current downward trend
When the value of device is more than or equal to described first preset value, it is judged that the rising of described electric current downward trend enumerator
Whether clear flag position is 0, when described rising clear flag position is 0, rises by described electric current
The value of gesture enumerator is set to 0, and changes described rising clear flag position into 1, returns to described collection
Step, and when described rising clear flag position is 1, return to described acquisition step；Judge
Whether the value of described electric current ascendant trend enumerator is more than the second preset value, in described electric current ascendant trend
When the value of enumerator is more than described second preset value, it is judged that the variation tendency for described current value is by subtracting
Little transfer increase to, start described defrosting mode and defrost.
Air-conditioning enters the determination methods of defrosting mode according to an embodiment of the invention, by ratio repeatedly
Relatively result finally determines the variation tendency of electric current rather than carries out only with comparative result once
Judge, so, it is to avoid the erroneous judgement that random fluctuation causes, improve the accuracy of judgement.Wherein,
If it is average electric more than described second that the comparative result being set in accumulative 5 times is the first average current value
During flow valuve, determine and be judged to that electric current reduces, then if current judged result is that the first current value is more than
The number of times of the second current value is 4 times, then continues to gather current data and judges, so that it is guaranteed that sentence
Disconnected accuracy.
Embodiment according to a second aspect of the present invention, it is proposed that a kind of air-conditioning enters the judgement of defrosting mode
Device, including: judging unit, when air-conditioning is in heating mode, it is judged that the outdoor fan of air-conditioning
Whether rotating speed is equal to rotating speed of target；Detector unit, the rotating speed at the outdoor fan of described air-conditioning is equal to institute
When stating rotating speed of target, start to detect the current value in described outdoor fan；Processing unit, is detecting
When the variation tendency of described current value is for being transferred to increase by reduction, starts defrosting mode and defrost.
Air-conditioning enters the judgment means of defrosting mode according to an embodiment of the invention, is in system at air-conditioning
Heat pattern, and when the rotating speed of outdoor fan is rotating speed of target, the electric current of detection outdoor fan, if
Detect that curent change trend for be transferred to increase by reduction, then proceeds by defrosting, as such, it is possible to accurate
True judges that air-conditioning starts the opportunity of defrosting, thus avoids the shortcomings such as frostless defrosting, improves user
Experience.
According to one embodiment of present invention, described detector unit includes: collecting unit, with default
Time interval, gathers the current value of described outdoor fan.
According to one embodiment of present invention, described processing unit includes: computing unit, from collecting
Current value in extract the adjacent current value of 2K, and calculate front K the electric current first collected
The meansigma methods that value is corresponding, is denoted as the first average current value, and after rear K the current value pair that collect
The meansigma methods answered, is denoted as the second average current value, and wherein, K is the natural number of non-zero；Comparing unit,
Relatively described first average current value and the size of described second average current value；Performance element, in institute
When stating the first average current value more than described second average current value, electric current downward trend enumerator adds 1；
When described first average current value is less than described second average current value, electric current ascendant trend enumerator
Add 1.
Air-conditioning enters the judgment means of defrosting mode according to an embodiment of the invention, gathers described outdoor
Multiple current values of blower fan, and calculate the meansigma methods of multiple electric current, and then compare, it is judged that electricity
The variation tendency of stream, so, improves the accuracy of judgement, it is to avoid the erroneous judgement that random fluctuation causes.
According to one embodiment of present invention, described performance element is additionally operable to: judge that described electric current declines
Whether the value of trend enumerator is more than the first preset value, little in the value of described electric current downward trend enumerator
When described first preset value, return to described acquisition step, count in described electric current downward trend
When the value of device is more than or equal to described first preset value, it is judged that the rising of described electric current downward trend enumerator
Whether clear flag position is 0, when described rising clear flag position is 0, rises by described electric current
The value of gesture enumerator is set to 0, and changes described rising clear flag position into 1, returns to described collection
Step, and when described rising clear flag position is 1, return to described acquisition step；Judge
Whether the value of described electric current ascendant trend enumerator is more than the second preset value, in described electric current ascendant trend
When the value of enumerator is more than described second preset value, it is judged that the variation tendency for described current value is by subtracting
Little transfer increase to, start described defrosting mode and defrost.
Air-conditioning enters the judgment means of defrosting mode according to an embodiment of the invention, by ratio repeatedly
Relatively result finally determines the variation tendency of electric current rather than carries out only with comparative result once
Judge, so, it is to avoid the erroneous judgement that random fluctuation causes, improve the accuracy of judgement.Wherein,
If it is average electric more than described second that the comparative result being set in accumulative 5 times is the first average current value
During flow valuve, determine and be judged to that electric current reduces, then if current judged result is that the first current value is more than
The number of times of the second current value is 4 times, then continues to gather current data and judges, so that it is guaranteed that sentence
Disconnected accuracy.
Embodiment according to a third aspect of the present invention proposes a kind of air-conditioning, including: compressor, indoor
Blower fan, outdoor fan, outdoor heat exchanger, throttling arrangement, indoor heat exchanger and such as technique scheme
According to any one of air-conditioning enter the judgment means of defrosting mode, described air-conditioning enters defrosting mode
Judgment means is connected to described outdoor fan, detects the current value in described outdoor fan.This air-conditioning has
There is the technique effect that the judgment means entering defrosting mode with above-mentioned air-conditioning is identical, do not repeat them here.
By technical scheme, can judge that air-conditioning carries out the opportunity of Defrost operation exactly,
Thus avoid the shortcomings such as frostless defrosting, improve the experience of user.
The additional aspect of the present invention and advantage will part be given in the following description, and part will be from following
Description in become obvious, or recognized by the practice of the present invention.
Accompanying drawing explanation
Embodiment is retouched by the above-mentioned and/or additional aspect of the present invention and advantage from combining accompanying drawings below
Will be apparent from easy to understand in stating, wherein:
Fig. 1 shows showing of the determination methods of air-conditioning entrance defrosting mode according to an embodiment of the invention
Meaning flow chart；
Fig. 2 shows showing of the judgment means of air-conditioning entrance defrosting mode according to an embodiment of the invention
Meaning block diagram；
Fig. 3 shows the tool of the determination methods of air-conditioning entrance defrosting mode according to an embodiment of the invention
Body flow chart；
Fig. 4 shows the particular flow sheet judging curent change trend according to the present invention.
Detailed description of the invention
In order to be more clearly understood that the above-mentioned purpose of the present invention, feature and advantage, below in conjunction with attached
The present invention is further described in detail by figure and detailed description of the invention.It should be noted that not
In the case of conflict, the feature in embodiments herein and embodiment can be mutually combined.
Elaborate a lot of detail in the following description so that fully understanding the present invention, but,
The present invention can implement to use other to be different from other modes described here, therefore, and the present invention
Protection domain do not limited by following public specific embodiment.
Fig. 1 shows showing of the determination methods of air-conditioning entrance defrosting mode according to an embodiment of the invention
Meaning flow chart.
As it is shown in figure 1, air-conditioning enters the determination methods of defrosting mode according to an embodiment of the invention,
Including: step 102, when air-conditioning is in heating mode, it is judged that the rotating speed of the outdoor fan of air-conditioning is
No equal to rotating speed of target；Step 104, the rotating speed at the outdoor fan of described air-conditioning is equal to described target
During rotating speed, start to detect the current value in described outdoor fan；Step 106, is detecting described electricity
When the variation tendency of flow valuve is for being transferred to increase by reduction, starts defrosting mode and defrost.
Air-conditioning enters the determination methods of defrosting mode according to an embodiment of the invention, is in system at air-conditioning
Heat pattern, and when the rotating speed of outdoor fan is rotating speed of target, the electric current of detection outdoor fan, if
Detect that curent change trend for be transferred to increase by reduction, then proceeds by defrosting, as such, it is possible to accurate
True judges that air-conditioning starts the opportunity of defrosting, thus avoids the shortcomings such as frostless defrosting, improves user
Experience.
It addition, air-conditioning according to the above embodiment of the present invention enters the determination methods of defrosting mode, also may be used
To have following additional technical characteristic:
According to one embodiment of present invention, described step 104 specifically includes: with between the default time
Every, gather the current value of described outdoor fan.
According to one embodiment of present invention, described step 106 specifically includes: from the electric current collected
Value extracts 2K adjacent current value, and it is corresponding to calculate front K the current value first collected
Meansigma methods, be denoted as the first average current value, and after corresponding flat of rear K the current value that collect
Average, is denoted as the second average current value, and wherein, K is the natural number of non-zero；Relatively more described first flat
All current value and sizes of described second average current value；In described first average current value more than described
During the second average current value, electric current downward trend enumerator adds 1；Little in described first average current value
When described second average current value, electric current ascendant trend enumerator adds 1.
Air-conditioning enters the determination methods of defrosting mode according to an embodiment of the invention, gathers described outdoor
Multiple current values of blower fan, and calculate the meansigma methods of multiple electric current, and then compare, it is judged that electricity
The variation tendency of stream, so, improves the accuracy of judgement, it is to avoid the erroneous judgement that random fluctuation causes.
According to one embodiment of present invention, described step 106 also includes: judge that described electric current declines
Whether the value of trend enumerator is more than the first preset value, little in the value of described electric current downward trend enumerator
When described first preset value, return to described acquisition step, count in described electric current downward trend
When the value of device is more than or equal to described first preset value, it is judged that the rising of described electric current downward trend enumerator
Whether clear flag position is 0, when described rising clear flag position is 0, rises by described electric current
The value of gesture enumerator is set to 0, and changes described rising clear flag position into 1, returns to described collection
Step, and when described rising clear flag position is 1, return to described acquisition step；Judge
Whether the value of described electric current ascendant trend enumerator is more than the second preset value, in described electric current ascendant trend
When the value of enumerator is more than described second preset value, it is judged that the variation tendency for described current value is by subtracting
Little transfer increase to, start described defrosting mode and defrost.
Air-conditioning enters the determination methods of defrosting mode according to an embodiment of the invention, by ratio repeatedly
Relatively result finally determines the variation tendency of electric current rather than carries out only with comparative result once
Judge, so, it is to avoid the erroneous judgement that random fluctuation causes, improve the accuracy of judgement.Wherein,
If it is average electric more than described second that the comparative result being set in accumulative 5 times is the first average current value
During flow valuve, determine and be judged to that electric current reduces, then if current judged result is that the first current value is more than
The number of times of the second current value is 4 times, then continues to gather current data and judges, so that it is guaranteed that sentence
Disconnected accuracy.
Fig. 2 shows showing of the judgment means of air-conditioning entrance defrosting mode according to an embodiment of the invention
Meaning block diagram.
As in figure 2 it is shown, air-conditioning enters the judgment means of defrosting mode according to an embodiment of the invention
200, including: judging unit 202, when air-conditioning is in heating mode, it is judged that the outdoor fan of air-conditioning
Rotating speed whether equal to rotating speed of target；Detector unit 204, at the rotating speed of the outdoor fan of described air-conditioning
During equal to described rotating speed of target, start to detect the current value in described outdoor fan；Processing unit 206,
When the variation tendency described current value being detected is to be transferred to increase by reduction, starts defrosting mode and carry out
Defrosting.
Air-conditioning enters the judgment means of defrosting mode according to an embodiment of the invention, is in system at air-conditioning
Heat pattern, and when the rotating speed of outdoor fan is rotating speed of target, the electric current of detection outdoor fan, if
Detect that curent change trend for be transferred to increase by reduction, then proceeds by defrosting, as such, it is possible to accurate
True judges that air-conditioning starts the opportunity of defrosting, thus avoids the shortcomings such as frostless defrosting, improves user
Experience.
According to one embodiment of present invention, described detector unit 204 includes: collecting unit 2042,
At predetermined intervals, the current value of described outdoor fan is gathered；
According to one embodiment of present invention, described processing unit 206 includes: computing unit 2062,
From the current value collected, extract 2K adjacent current value, and calculate the front K first collected
The meansigma methods that individual current value is corresponding, is denoted as the first average current value, and after rear K the electricity that collect
The meansigma methods that flow valuve is corresponding, is denoted as the second average current value, and wherein, K is the natural number of non-zero；Ratio
Relatively unit 2064, relatively described first average current value and the size of described second average current value；Hold
Row unit 2066, when described first average current value is more than described second average current value, under electric current
Fall trend enumerator adds 1；When described first average current value is less than described second average current value,
Electric current ascendant trend enumerator adds 1.
Air-conditioning enters the judgment means of defrosting mode according to an embodiment of the invention, gathers described outdoor
Multiple current values of blower fan, and calculate the meansigma methods of multiple electric current, and then compare, it is judged that electricity
The variation tendency of stream, so, improves the accuracy of judgement, it is to avoid the erroneous judgement that random fluctuation causes.
According to one embodiment of present invention, described performance element 2066 is additionally operable to: judge described electric current
Whether the value of downward trend enumerator is more than the first preset value, at described electric current downward trend enumerator
When value is less than described first preset value, return to described acquisition step, in described electric current downward trend
When the value of enumerator is more than or equal to described first preset value, it is judged that described electric current downward trend enumerator
Rise whether clear flag position is 0, when described rising clear flag position is 0, by described electric current
The value rising trend enumerator is set to 0, and changes described rising clear flag position into 1, returns to described
Acquisition step, and when described rising clear flag position is 1, return to described acquisition step；
Judge that the value of described electric current ascendant trend enumerator, whether more than the second preset value, rises at described electric current
When the value of trend enumerator is more than described second preset value, it is judged that the variation tendency for described current value is
Transferred to increase by reduction, start described defrosting mode and defrost.
Air-conditioning enters the judgment means of defrosting mode according to an embodiment of the invention, by ratio repeatedly
Relatively result finally determines the variation tendency of electric current rather than carries out only with comparative result once
Judge, so, it is to avoid the erroneous judgement that random fluctuation causes, improve the accuracy of judgement.Wherein,
If it is average electric more than described second that the comparative result being set in accumulative 5 times is the first average current value
During flow valuve, determine and be judged to that electric current reduces, then if current judged result is that the first current value is more than
The number of times of the second current value is 4 times, then continues to gather current data and judges, so that it is guaranteed that sentence
Disconnected accuracy.
Embodiment according to a third aspect of the present invention also proposed a kind of air-conditioning, including: compressor, room
Inner blower, outdoor fan, outdoor heat exchanger, throttling arrangement, indoor heat exchanger and such as above-mentioned technical side
Air-conditioning according to any one of case enters the judgment means of defrosting mode, and described air-conditioning enters defrosting mode
Judgment means be connected to described outdoor fan, detect the current value in described outdoor fan.This air-conditioning
There is the technique effect identical with the judgment means of above-mentioned air-conditioning entrance defrosting mode, do not repeat them here.
Fig. 3 shows the tool of the determination methods of air-conditioning entrance defrosting mode according to an embodiment of the invention
Body flow chart.
As it is shown on figure 3, air-conditioning enters the determination methods of defrosting mode according to an embodiment of the invention
Idiographic flow is as follows:
Step 302, air-conditioner energising start, it is judged that whether present mode of operation is heating mode, as
Fruit is, internal counter Ndown (electric current downward trend enumerator), Nup (electric current ascendant trend
Enumerator), Nclearup (rises clear flag position 0 and is initialized to 0, enter step 304；As
Fruit not, exits.
Step 304, it is judged that whether the rotating speed of outdoor fan reaches rotating speed of target, when outdoor fan rotating speed
When reaching rotating speed of target, enter step 306.
Step 306, starts to gather outdoor fan current value I with period of time T.
Step 308, according to outdoor fan current value I, it is judged that the curent change trend of outdoor fan, when
When the variation tendency of outdoor fan current value I is for being transferred to increase by reduction, enter step 310.
Step 310, enters Defrost operation.Wherein working method and the principle of Defrost operation is all public
The technology opened, does not repeats at this.
Wherein, as shown in Figure 4, step 308 judging, the idiographic flow of curent change trend is as follows:
Step 402, the storage 2k natural number of non-zero (k be) the individual time is upper the most adjacent in step 306
In the outdoor fan current value I that collects1, I2…I2k, calculate front k the current value that first collect
Meansigma methods, represents with Iold, the meansigma methods of rear k the current value collected after calculating, and uses Inew
Represent, enter step 404.Wherein, gather multiple current value, and calculate the average of multiple electric current
Value, and then compare, it is judged that the variation tendency of electric current, so, improve the accuracy of judgement,
Avoid the erroneous judgement that random fluctuation causes.
Step 404, compares Inew and Iold.
Step 406, if Inew < Iold, internal counter Ndown add 1.
Step 408, it is judged that whether Ndown, less than preset value, if Ndown is less than preset value, returns
Return step 306.
Step 410, if Ndown is more than preset value, then judges that Nclearup is 0.
Step 412, if Nclearup is 0, changes Nup as 0 into, and Nclearup changes 1 into, returns
Step 306；If Nup is 1 more than preset value and Nclearup, return step 306.
Step 414, if Inew > Iold, internal counter Nup add 1.
Step 416, if Nup is more than preset value, it is judged that the variation tendency for described current value is served as reasons
Reduce and transfer increase to, start described defrosting mode and defrost.Otherwise, step 306 is returned.
Wherein, the variation tendency rather than only of electric current is finally determined by comparative result repeatedly
Use the comparative result once to judge, so, it is to avoid the erroneous judgement that random fluctuation causes, improve
The accuracy judged.
Technical scheme is described in detail above in association with accompanying drawing, by technical scheme,
Can judge that air-conditioning carries out the opportunity of Defrost operation exactly, thus avoid the shortcomings such as frostless defrosting,
Improve the experience of user.
The foregoing is only embodiments of the invention, be not limited to the present invention, for ability
For the technical staff in territory, the present invention can have various modifications and variations.All spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement etc. made, should be included in the guarantor of the present invention
Within the scope of protecting.
Claims (9)
1. the determination methods of an air-conditioning entrance defrosting mode, it is characterised in that including:
Judge step, when air-conditioning is in heating mode, it is judged that whether the rotating speed of the outdoor fan of air-conditioning is equal to rotating speed of target；
Detecting step, when the rotating speed of the outdoor fan of described air-conditioning is equal to described rotating speed of target, starts to detect the current value in described outdoor fan；
Process step, when the variation tendency described current value being detected is to be transferred to increase by reduction, starts defrosting mode and defrost.
Air-conditioning the most according to claim 1 enters the determination methods of defrosting mode, it is characterised in that described detecting step specifically includes:
Acquisition step, at predetermined intervals, gathers the current value of described outdoor fan.
Air-conditioning the most according to claim 1 enters the determination methods of defrosting mode, it is characterised in that described process step specifically includes:
Calculation procedure, 2K adjacent current value is extracted from the current value collected, and calculate the meansigma methods that front K the current value first collected is corresponding, it is denoted as the first average current value, the meansigma methods that rear K the current value that collect after and is corresponding, being denoted as the second average current value, wherein, K is the natural number of non-zero；
Comparison step, relatively described first average current value and the size of described second average current value；
Performing step, when described first average current value is more than described second average current value, electric current downward trend enumerator adds 1；When described first average current value is less than described second average current value, electric current ascendant trend enumerator adds 1.
Air-conditioning the most according to claim 3 enters the determination methods of defrosting mode, it is characterised in that described execution step also includes:
Judge that whether the value of described electric current downward trend enumerator is more than the first preset value, when the value of described electric current downward trend enumerator is less than described first preset value, return to described acquisition step, when the value of described electric current downward trend enumerator is more than or equal to described first preset value, whether the rising clear flag position judging described electric current downward trend enumerator is 0, when described rising clear flag position is 0, the value of described electric current ascendant trend enumerator is set to 0, and change described rising clear flag position into 1, return to described acquisition step, and when described rising clear flag position is 1, return to described acquisition step；
Judge that whether the value of described electric current ascendant trend enumerator is more than the second preset value, when the value of described electric current ascendant trend enumerator is more than described second preset value, it is judged as that the variation tendency of described current value, for be transferred to increase by reduction, starts described defrosting mode and defrosts.
5. the judgment means of an air-conditioning entrance defrosting mode, it is characterised in that including:
Judging unit, when air-conditioning is in heating mode, it is judged that whether the rotating speed of the outdoor fan of air-conditioning is equal to rotating speed of target；
Detector unit, when the rotating speed of the outdoor fan of described air-conditioning is equal to described rotating speed of target, starts to detect the current value in described outdoor fan；
Processing unit, when the variation tendency described current value being detected is to be transferred to increase by reduction, starts defrosting mode and defrosts.
Air-conditioning the most according to claim 5 enters the judgment means of defrosting mode, it is characterised in that described detector unit includes:
Collecting unit, at predetermined intervals, gathers the current value of described outdoor fan.
Air-conditioning the most according to claim 5 enters the judgment means of defrosting mode, it is characterised in that described processing unit includes:
Computing unit, 2K adjacent current value is extracted from the current value collected, and calculate the meansigma methods that front K the current value first collected is corresponding, it is denoted as the first average current value, the meansigma methods that rear K the current value that collect after and is corresponding, being denoted as the second average current value, wherein, K is the natural number of non-zero；
Comparing unit, relatively described first average current value and the size of described second average current value；
Performance element, when described first average current value is more than described second average current value, electric current downward trend enumerator adds 1；When described first average current value is less than described second average current value, electric current ascendant trend enumerator adds 1.
Air-conditioning the most according to claim 7 enters the judgment means of defrosting mode, it is characterised in that described performance element is additionally operable to:
Judge that whether the value of described electric current downward trend enumerator is more than the first preset value, when the value of described electric current downward trend enumerator is less than described first preset value, return to described acquisition step, when the value of described electric current downward trend enumerator is more than or equal to described first preset value, whether the rising clear flag position judging described electric current downward trend enumerator is 0, when described rising clear flag position is 0, the value of described electric current ascendant trend enumerator is set to 0, and change described rising clear flag position into 1, return to described acquisition step, and when described rising clear flag position is 1, return to described acquisition step；
Judge that whether the value of described electric current ascendant trend enumerator is more than the second preset value, when the value of described electric current ascendant trend enumerator is more than described second preset value, it is judged as that the variation tendency of described current value, for be transferred to increase by reduction, starts described defrosting mode and defrosts.
9. an air-conditioning, it is characterised in that including:
Compressor, indoor fan, outdoor fan, outdoor heat exchanger, throttling arrangement and indoor heat exchanger；And
Air-conditioning as according to any one of claim 5 to 8 enters the judgment means of defrosting mode, and described air-conditioning enters the judgment means of defrosting mode and is connected to described outdoor fan, detects the current value in described outdoor fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410120194.9A CN103925675B (en) | 2014-03-27 | 2014-03-27 | Air-conditioning enters the determination methods of defrosting mode, judgment means and air-conditioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410120194.9A CN103925675B (en) | 2014-03-27 | 2014-03-27 | Air-conditioning enters the determination methods of defrosting mode, judgment means and air-conditioning |
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| CN104930674B (en) * | 2015-05-14 | 2017-11-17 | 珠海格力电器股份有限公司 | Air-conditioner set outdoor unit defrosting control method, device and air-conditioning system |
| JP6119811B2 (en) * | 2015-08-18 | 2017-04-26 | ダイキン工業株式会社 | Refrigeration equipment |
| CN105571245B (en) * | 2016-01-28 | 2017-12-08 | 珠海格力电器股份有限公司 | Determination methods, judgment means and the air-conditioning system of air-conditioning frosting |
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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 |
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