CN104236005B - The defrosting control method of air-conditioner - Google Patents
The defrosting control method of air-conditioner Download PDFInfo
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- CN104236005B CN104236005B CN201310245275.7A CN201310245275A CN104236005B CN 104236005 B CN104236005 B CN 104236005B CN 201310245275 A CN201310245275 A CN 201310245275A CN 104236005 B CN104236005 B CN 104236005B
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Abstract
The invention discloses a kind of defrosting control method of air-conditioner, including：S1：Under heating mode, run time M of compressor is detected.S2：M ＞ first scheduled time M1, pipe temperature T2 of detection indoor temperature T1 and indoor heat exchanger is to obtain difference △ T=T2 T1.S3：△ T is compared to obtain the maximum △ T of differenceMAX, and judge △ H=△ TMAXWhether △ T is more than first predetermined value TS1, while △ T is compared with second predetermined value TS2.S4：As △ H >=TS1 and △ T ＜ TS2, M >=M2, the defrosting stage is entered.S5：The defrost time arrives, and defrost terminates.The defrosting control method of air-conditioner according to embodiments of the present invention, can avoid the occurrence of frostless defrosting state, it is ensured that the heating effect of air-conditioner.
Description
Technical field
The present invention relates to household appliance technical field, especially relates to a kind of defrosting control method of air-conditioner.
Background technology
Existing intelligent defrosting method, the setting of defrost time are formulated with the situation of worst industry control, during defrost
Between longer, and the time that general frosting situation so need not be grown is defrosted, and so as to cause to waste, affects heating operation.
Or as long as and there is the gentle breeze blowing-out machine in anti-cold wind in conventional defrost mode, as long as the time one is to will enter defrosting, but
Be not in typically frosting state under low temperature industry control, frostless defrosting phenomenon easily occur.
Content of the invention
It is contemplated that at least solving one of technical problem present in prior art.For this purpose, one object of the present invention
It is to propose a kind of defrosting control method for avoiding the occurrence of frostless defrosting phenomenon and the air-conditioner of heating capacity being improved.
The defrosting control method of air-conditioner according to embodiments of the present invention, comprises the steps：S1：Control the air-conditioner
Heating mode is entered, detects run time M of the compressor of the air-conditioner；S2：Detect run time M of the compressor
During more than the first scheduled time M1, detect pipe temperature T2 of the indoor heat exchanger of indoor temperature T1 and the air-conditioner and be compared
To obtain difference △ T=T2-T1；S3：Difference △ T to detecting is compared to obtain the maximum △ T of differenceMAX, and sentence
Disconnected △ TMAXWith the difference △ H=△ T between the difference △ T for subsequently detectingMAXWhether-△ T is more than first predetermined value TS1, while
Difference △ T is compared with second predetermined value TS2, the difference △ T for wherein subsequently detecting is less than maximum △ of difference
TMAX；S4：When difference △ H is more than or equal to first predetermined value TS1 and difference △ T is less than second predetermined value TS2, while the pressure
When run time M of contracting machine is more than or equal to the second scheduled time M2, the air-conditioner is controlled to enter the defrosting stage, wherein second is pre-
The M2 that fixes time is more than the first scheduled time M1；S5：In the defrosting stage, when the air-conditioner has run defrost time DDT, change
Frost terminates, and returns to step S1.
The defrosting control method of air-conditioner according to embodiments of the present invention, by detecting the room of indoor temperature T1 and air-conditioner
Pipe temperature T2 of interior heat exchanger, and by comparing the maximum △ T for obtaining differenceMAX, now by maximum △ TMAXWith subsequently detection
Difference △ T between difference △ H be compared with first predetermined value TS1, while difference △ T is entered with second predetermined value TS2
Row compares, when while meeting difference △ H more than or equal to first predetermined value TS1, difference △ T less than second predetermined value TS2 and compression
When run time M of machine is more than or equal to the second scheduled time M2, control air-conditioner enters the defrosting stage, so as to avoiding the occurrence of no
White defrosting state, it is ensured that the heating effect of air-conditioner.
In addition, also there is following additional technical feature according to the defrosting control method of the air-conditioner of the present invention：
According to some embodiments of the present invention, difference △ detected when entering the defrosting stage according to the air-conditioner
The situation of H and first predetermined value TS1 judges the numerical value of defrost time DDT, and now defrost time DDT is DT minute：When detecting
During △ H >=TS1, the DT minute is DT1 minute；When △ H >=TS1+2 DEG C is detected, the DT minute is DT1+1 minute；
When △ H >=TS1+4 DEG C is detected, the DT minute is DT1+2 minute；When △ H >=TS1+6 DEG C is detected, the DT divides
Clock is DT1+3 minute；When △ H >=TS1+8 DEG C is detected, the DT minute is DT1+4 minute；When detecting △ H >=TS1+
When 10 DEG C, the DT minute is DT1+5 minute.
Further, when the defrosting control method of the air-conditioner is further according to run time M of compressor to defrost
Between DDT be adjusted：When the air-conditioner enters the defrosting stage, run time M of the compressor was second scheduled time
During M2, now the defrost time DDT of the air-conditioner is DT minute；When the air-conditioner enters the defrosting stage, the compression
Run time M of machine is more than the second scheduled time M2 and less than or equal to the 3rd scheduled time M3, the now defrost of the air-conditioner
Time DDT is DT+1 minute；When the air-conditioner enters the defrosting stage, run time M of the compressor is pre- more than the 3rd
Fix time M3 and less than or equal to the 4th scheduled time M4, and now the defrost time DDT of the air-conditioner is DT+2 minute；When described
When air-conditioner enters the defrosting stage, run time M of the compressor is more than the 4th scheduled time M4 and pre- less than or equal to the 5th
Fix time M5 when, now the defrost time DDT of the air-conditioner be DT+3 minute；When the air-conditioner enters the defrosting stage,
When run time M of the compressor is more than the 5th scheduled time M5, now the defrost time DDT of the air-conditioner divides for DT+4
Clock, wherein, when the defrost time DDT of air-conditioner is more than defrost time maximum, during using defrost time maximum as defrost
Between.
The defrosting control method of air-conditioner according to embodiments of the present invention, by run time and difference according to compressor
The situation of △ H and first predetermined value TS1 was adjusted to the defrost time of air-conditioner, can reduce the unnecessary defrost time, was increased
Plus the effective time of air conditioner heat-production operation, improve the heating capacity of air-conditioner.
In some examples of the present invention, the defrost time maximum is 12 minutes.
According to some embodiments of the present invention, the defrosting control method of the air-conditioner also comprises the steps：S6：Detection
To the compressor run time M more than the first scheduled time M1 when, detect the air-conditioner whether occur low speed wind model or
There is blowing-out machine phenomenon；S7：If low speed wind model occur or blowing-out machine phenomenon occur, it is more than the difference △ H is detected
Equal to first predetermined value TS1 and when run time M of the compressor is detected more than or equal to the second scheduled time M2, control institute
State air-conditioner enter the defrosting stage, and defrost time DDT be more than or equal to the 6th scheduled time M6, if do not occur low speed wind model or
There is blowing-out machine phenomenon, then enter into step S3.So as to the defrosting control method of air-conditioner according to embodiments of the present invention, can subtract
Frostless defrost situation under few worst cold case, increases effective heating operation time, improves heating capacity.
Alternatively, the 6th scheduled time M6 is 10 minutes.
According to some embodiments of the present invention, the wind speed of the air-conditioner is multi gear, and the air-conditioner is in each grade of institute
State second predetermined value different.
Specifically, when run time M of the compressor meets：During M2≤M≤M5, the air-conditioner high wind shelves, in
Wind shelves, the second predetermined value of low wind shelves are respectively D1, D2, D3, when run time M of the compressor meets：During M ＞ M5, institute
The second predetermined value for air-conditioner being stated in high wind shelves, apoplexy shelves, low wind shelves is respectively D1+2, D2+2, D3+2, wherein, D1 ＜ D2 ＜
D3.
More specifically, in step s3, when the wind speed of the air-conditioner changes, △ Tmax value again.So as to
Ensure the reliability of the defrosting control method of the air-conditioner.
The additional aspect and advantage of the present invention will be set forth in part in the description, and partly will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from the description with reference to accompanying drawings below to embodiment
Substantially and easy to understand, wherein：
Fig. 1 is the flow chart of the defrosting control method of the air-conditioner according to the embodiment of the present invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.Term " the
One ", " second " is only used for describing purpose, and it is not intended that indicating or hint relative importance.
A kind of defrosting control method of air-conditioner according to embodiments of the present invention, wherein, air-conditioner are described below with reference to Fig. 1
Including elements such as indoor heat exchanger, compressor, blower fans, the refrigeration principle of air-conditioner and the technology for this area such as principle is heated
Known to personnel, just it is not described in detail here.
The defrosting control method of air-conditioner according to embodiments of the present invention, as shown in figure 1, comprise the steps:
S1：Control air-conditioner enters heating mode, detects run time M of the compressor of air-conditioner.
S2：When run time M of compressor is detected more than the first scheduled time M1, detect indoor temperature T1 and air-conditioner
Pipe temperature T2 of indoor heat exchanger and be compared to obtain difference △ T=T2-T1, specifically, can be detected by temperature sensor
Pipe temperature T2 of indoor temperature T1 and indoor heat exchanger.After in run time M of compressor more than the first scheduled time M1, then
Detection indoor temperature T1 and pipe temperature T2 of indoor heat exchanger, it is ensured that the data for detecting are really effective, because transport in compressor
Capable starting stage, the various parameters of heating are all stable, and this is certainly will to affect the authenticity of data if sampled.And
Be worth being understood by, it should be the indoor temperature T1 and indoor heat exchanger that synchronization is detected pipe temperature T2 be compared with
Difference △ T is obtained, wherein, the first scheduled time M1 can be specifically set according to the actual performance of different compressors.
S3：Difference △ T to detecting is compared to obtain the maximum △ T of differenceMAX, specifically, in compressor
In running be air-conditioner heating operations in, indoor temperature T1 can gradually rise, and pipe temperature T2 of indoor heat exchanger can be by
Decrescence low, in the process, the difference △ T to detecting ceaselessly is compared, and after occurring, one difference △ T is less than previous
During individual difference △ T, show that difference △ T occurs declining phenomenon, that is, obtain the maximum △ T of differenceMAX, now subsequently detect
Difference △ T is respectively less than the maximum △ T of differenceMAX.Then judge △ TMAXWith difference △ between the difference △ T for subsequently detecting
H=△TMAXWhether-△ T is more than first predetermined value TS1.
It is compared in the difference △ T to detecting to obtain the maximum △ T of differenceMAXDuring, while by difference
△ T is compared with second predetermined value TS2.Wherein, first predetermined value TS1 and second predetermined value TS2 are according to different air-conditioners
Actual performance specifically sets.
S4：When difference △ H is more than first predetermined value TS1 and difference △ T is less than second predetermined value, while the fortune of compressor
When row time M is more than or equal to the second scheduled time M2, control air-conditioner enters the defrosting stage, and wherein the second scheduled time M2 is more than
First scheduled time M1.That is, now controlling the air-conditioner entrance defrosting stage to must simultaneously meet three conditions：First
Condition is difference △ H more than first predetermined value TS1, and second condition is difference △ T less than second predetermined value TS2, the 3rd article
Part is run time M of compressor more than or equal to the second scheduled time M2, when occurring in which that a condition is unsatisfactory for, air-conditioner
The defrosting stage is not entered, and is to continue with judging above three condition.
S5：In the defrosting stage, when air-conditioner has run defrost time DDT, defrost terminates, and returns to step S1, so repeats.
The defrosting control method of air-conditioner according to embodiments of the present invention, by detecting the room of indoor temperature T1 and air-conditioner
Pipe temperature T2 of interior heat exchanger, and by comparing the maximum △ T for obtaining differenceMAX, now by maximum △ TMAXWith subsequently detection
Difference △ T between difference △ H be compared with first predetermined value TS1, while difference △ T is entered with second predetermined value TS2
Row compares, when while meeting difference △ H more than or equal to first predetermined value TS1, difference △ T less than second predetermined value TS2 and compression
When run time M of machine is more than or equal to the second scheduled time M2, control air-conditioner enters the defrosting stage, so as to avoiding the occurrence of no
White defrosting state, it is ensured that the heating effect of air-conditioner.
Specifically, the difference △ H detected when entering the defrosting stage according to air-conditioner and the situation of first predetermined value TS1 are sentenced
The numerical value of disconnected defrost time DDT, now defrost time DDT are DT minute, and including following 6 kinds of situations：
When △ H >=TS1 is detected, DT minute is predetermined value DT1；
When △ H >=TS1+2 DEG C is detected, DT minute is DT1+1 minute；
When △ H >=TS1+4 DEG C is detected, DT minute is DT1+2 minute；
When △ H >=TS1+6 DEG C is detected, DT minute is DT1+3 minute；
When △ H >=TS1+8 DEG C is detected, DT minute is DT1+4 minute；
When △ H >=TS1+10 DEG C is detected, DT minute is DT1+5 minute, that is to say, that enter into defrosting in air-conditioner
During the stage, the defrost time of air-conditioner is adjusted according to six kinds of above-mentioned situations, so as to can be according to different difference variation feelings
Condition, judges the situation of heat exchanger frosting, according to the difference of frosting situation, selects the corresponding defrost time.When frosting is not serious
Shorter defrost run time is selected, increases effective heating operation time, heating capacity is improved, when frosting is serious, increase defrost
Run time, it is ensured that defrosting is clean.
Further, the defrosting control method of the air-conditioner of the present invention always according to compressor run time M to defrost when
Between DDT be adjusted, now again include following five kinds of situations：
The first situation is that run time M of compressor is the second scheduled time M2 when air-conditioner enters the defrosting stage
When, now the defrost time DDT of air-conditioner is DT minute, that is to say, that be more than or equal to first predetermined value when there is difference △ H
When TS1 and difference △ T are less than second predetermined value TS2, if now run time M of compressor is not up to the second scheduled time M2
When, then when compressor operating is detected to the second scheduled time M2, air-conditioner enters into the defrosting stage, now the defrost time
DDT is DT minute, that is to say, that only determine the defrost time according to the situation of difference △ H and first predetermined value TS1.
Second situation is that run time M of compressor was more than for second scheduled time when air-conditioner enters the defrosting stage
M2 and be less than or equal to the 3rd scheduled time M3, now the defrost time DDT of air-conditioner be DT+1 minute, that is to say, that work as compression
Run time M of machine more than the second scheduled time M2 and is less than or equal to the 3rd scheduled time M3, just meets difference △ H and is more than or equal to
When first predetermined value TS1 and difference △ T are less than second predetermined value TS2, now control air-conditioner enters into the defrosting stage, and causes
The defrost time DDT of air-conditioner is DT+1 minute, that is to say, that determined according to the situation of difference △ H and first predetermined value TS1
The defrost time on the basis of plus 1 minute.
The third situation is that run time M of compressor was more than for the 3rd scheduled time when air-conditioner enters the defrosting stage
M3 and be less than or equal to the 4th scheduled time M4, now the defrost time DDT of air-conditioner be DT+2 minute, that is to say, that work as compression
Run time M of machine more than the 3rd scheduled time M3 and is less than or equal to the 4th scheduled time M4, just meets difference △ H and is more than or equal to
When first predetermined value TS1 and difference △ T are less than second predetermined value TS2, now control air-conditioner enters into the defrosting stage, and causes
The defrost time DDT of air-conditioner is DT+2 minute, that is to say, that determined according to the situation of difference △ H and first predetermined value TS1
The defrost time on the basis of plus 2 minutes.
4th kind of situation is that run time M of compressor was more than for the 4th scheduled time when air-conditioner enters the defrosting stage
M4 and less than or equal to the 5th scheduled time M5 when, now the defrost time DDT of air-conditioner be DT+3 minute, that is to say, that work as pressure
Run time M of contracting machine more than the 4th scheduled time M4 and be less than or equal to the 5th scheduled time M5, just meet difference △ H more than etc.
In first predetermined value TS1 and difference △ T less than second predetermined value TS2 when, now control air-conditioner enters into the defrosting stage, and makes
The defrost time DDT for obtaining air-conditioner is DT+3 minute, that is to say, that true in the situation according to difference △ H and first predetermined value TS1
Add 3 minutes on the basis of the fixed defrost time.
5th kind of situation is that run time M of compressor was more than for the 5th scheduled time when air-conditioner enters the defrosting stage
During M5, now the defrost time DDT of air-conditioner is DT+4 minute, that is to say, that when run time M of compressor is pre- more than the 5th
Fix time M5 when, just meet difference △ H more than or equal to first predetermined value TS1 and difference △ T less than second predetermined value TS2 when, this
When control air-conditioner enter into the defrosting stage, and to cause the defrost time DDT of air-conditioner be DT+4 minute, that is to say, that in root
Add 4 minutes on the basis of the defrost time according to the situation determination of difference △ H and first predetermined value TS1.
Wherein, when the defrost time DDT of air-conditioner is more than defrost time maximum, using defrost time maximum as change
The white time.That is, the defrost time maximum duration of air-conditioner is exactly defrost time maximum, how the time adds up all
No more than defrost time maximum.In some embodiments of the invention, defrost time maximum is 12 minutes.
The judgement of defrost time DDT is specifically described with two specific embodiments below, for example a kind of when occurring
Situation is：When meeting △ H >=TS1 in the second scheduled time M2 and meeting difference △ T less than second predetermined value TS2, then in pressure
When contracting machine ran to for the second minute scheduled time M2, the defrosting stage is entered into, if now difference △ H and first predetermined value TS1
Between situation when being still △ H >=TS1, then the defrost time of air-conditioner is DT1 minute, if difference △ H and first is predetermined
Situation between value TS1 becomes when turning to △ H >=TS1+2 DEG C, then the defrost time of air-conditioner is DT1+1 minute.Another kind of situation
It is：When only meeting △ H >=TS1 in the second scheduled time M2 but being unsatisfactory for difference △ T less than second predetermined value TS2, then air-conditioning
Device is continued to run with, and when the 3rd scheduled time M3 is run to, when meeting difference △ T less than second predetermined value TS2, is then entered into and is removed
The white stage, if the situation between this time difference value △ H and first predetermined value TS1 is changed into △ H >=TS1+6 DEG C, defrost time DDT
=DT1+3+1 minute.
The defrosting control method of air-conditioner according to embodiments of the present invention, by run time and difference according to compressor
The situation of △ H and first predetermined value TS1 was adjusted to the defrost time of air-conditioner, can reduce the unnecessary defrost time, was increased
Plus the effective time of air conditioner heat-production operation, improve the heating capacity of air-conditioner.
According to some embodiments of the present invention, the defrosting control method of air-conditioner also comprises the steps：
S6：When detecting run time M of compressor more than the first scheduled time M1, whether detection air-conditioner there is gentle breeze
There is blowing-out machine phenomenon in pattern, wherein, can detect whether air-conditioner low speed wind model occurs or blowing-out occur in any manner
Machine phenomenon, detection method are well known to those skilled in the art, are just not described in detail here.
S7：If low speed wind model occur or blowing-out machine phenomenon occur, make a reservation for more than or equal to first difference △ H is detected
Value TS1 and when detecting run time M of compressor more than or equal to the second scheduled time M2, control air-conditioner enters defrosting rank
Section, and defrost time DDT is more than or equal to the 6th scheduled time M6, if there is not low speed wind model or blowing-out machine phenomenon occur,
Enter into step S3.In some examples of the present invention, the 6th scheduled time M6 is 10 minutes.
That is, when in the running of compressor, if there is low speed wind model or there is blowing-out machine phenomenon, now
If detecting difference △ H more than first predetermined value TS1 and while meeting run time M of compressor more than or equal to the second pre- timing
Between M2 when, then control air-conditioner enter into the defrosting stage, now the defrost time of air-conditioner is according to difference △ H and first predetermined value
The situation of TS1 is adjusted with the run time of compressor, if the situation and pressure according to difference △ H and first predetermined value TS1
When the run time of contracting machine is adjusted the defrost time value that draws less than the 6th scheduled time M6, then press the 6th scheduled time M6
Time span defrosted, if carried out with the run time of compressor according to the situation of difference △ H and first predetermined value TS1
When the defrost time value that adjustment draws is more than the 6th scheduled time M6, then press according to difference △ H and the situation of first predetermined value TS1
The defrost time value being adjusted drawing with the run time of compressor is defrosted.
So as to the defrosting control method of air-conditioner according to embodiments of the present invention, the frostless defrost under worst cold case can be reduced
Situation, increases effective heating operation time, improves heating capacity.
In some embodiments of the invention, the wind speed of air-conditioner is multi gear, and air-conditioner is in each grade of second predetermined value
Different, that is to say, that air-conditioner may include high wind shelves, apoplexy shelves and low wind shelves, when air-conditioner is in high wind shelves second makes a reservation for
Value, air-conditioner in apoplexy shelves when second predetermined value and air-conditioner in low wind shelves when second predetermined value be all different.
Wherein, what deserves to be explained is, as air-conditioner is in heating process, the air quantity of the Guan Wenyu indoor fan of indoor heat exchanger
Relevant, and the increase with air quantity, the Guan Wenhui of indoor heat exchanger has declined, therefore indoor temperature T1 and indoor heat exchanger
The maximum △ T of the difference between pipe temperature T2MAXAlso can change with the change of fan delivery, that is to say, that air-conditioner is every
The maximum △ T of the difference that individual gear is obtainedMAXIt is all different, in other words, when the wind speed of air-conditioner changes, △
Tmax value again.
Specifically, when run time M of compressor meets：During M2≤M≤M5, air-conditioner is in high wind shelves, apoplexy shelves, low wind
The second predetermined value of shelves is respectively D1, D2, D3, when run time M of compressor meets：During M ＞ M5, air-conditioner high wind shelves,
Apoplexy shelves, the second predetermined value of low wind shelves are respectively D1+2, D2+2, D3+2, wherein, D1 ＜ D2 ＜ D3.
A kind of defrosting control method of air-conditioner according to the preferred embodiment of the invention is described below with reference to Fig. 1, wherein, should
Defrosting control method when any one among condition described below 1 and condition 2 is met by enter into the defrosting stage.
The condition 1 being described below in detail in defrosting control method according to embodiments of the present invention, condition 1 need to be met again simultaneously
Three sub- conditions 1.1,1.2,1.3 could enter the defrosting stage.
Condition 1：The defrost situation being in for air-conditioner when high wind shelves, apoplexy shelves and low three kinds of situations of wind shelves
1.1：The continuous operating time M that heats of compressor is more than or equal to the second scheduled time M2
1.2：Difference △ T between pipe temperature T2 of indoor temperature T1 and indoor heat exchanger meets following table requirement：
When the Cumulative Elapsed Time M of compressor is between the second scheduled time M2 and the 5th scheduled time M5, then difference △ T
To meet condition as follows：
| Wind shelves | △T |
| Gao Feng | ＜ D1 DEG C |
| Apoplexy | ＜ D2 DEG C |
| Low wind | ＜ D3 DEG C |
Wherein, D1, D2, D3 are respectively corresponding temperature value, can arrange different values according to the type of different air-conditioners,
And D1 ＜ D2 ＜ D3.
When the Cumulative Elapsed Time M of compressor is more than the 5th scheduled time M5, then difference △ T to meet condition as follows：
| Wind shelves | △T |
| Gao Feng | ＜ D1+2 DEG C |
| Apoplexy | ＜ D2+2 DEG C |
| Low wind | ＜ D3+2 DEG C |
1.3：When compressor Cumulative Elapsed Time M is more than the first scheduled time M1, difference △ H is more than first predetermined value TS1,
Now it should be noted that in the running of compressor, being more than first predetermined value TS1 when there is a difference △ H, then should
Condition can be met always until entering the defrosting stage.
If condition 1.3 is met prior to condition 1.1 or 1.2, and in the mistake for waiting condition 1.1 and condition 1.2 to meet
Cheng Zhong, the situation between difference △ H and first predetermined value TS1 now will make a reservation for according to difference △ H and first in lasting change
The situation of value TS1 determines the time required for defrost, is now divided into six kinds of situations：
When △ H >=TS1 is detected, the DT minute is DT1 minute；
When △ H >=TS1+2 DEG C is detected, the DT minute is DT1+1 minute；
When △ H >=TS1+4 DEG C is detected, the DT minute is DT1+2 minute；
When △ H >=TS1+6 DEG C is detected, the DT minute is DT1+3 minute；
When △ H >=TS1+8 DEG C is detected, the DT minute is DT1+4 minute；
When △ H >=TS1+10 DEG C is detected, the DT minute is DT1+5 minute.
Wherein, when the time required for defrost is determined, should also be according to the run time of compressor to defrost time DDT
It is adjusted, to obtain final defrost time DDT, being now divided into five kinds of situations：
As M=M2, then with condition 1.3 determine time span be final defrost time DDT；
As M2 ＜ M≤M3, then add 1 minute on the basis of the time determined according to condition 1.3；
As M3 ＜ M≤M4, then add 2 minutes on the basis of the time determined according to condition 1.3；
As M4 ＜ M≤M5, then add 3 minutes on the basis of the time determined according to condition 1.3；
As M5 ＜ M, then add 4 minutes on the basis of the time determined according to condition 1.3, wherein, defrost time DDT is not
Can exceed that defrost time maximum.
Wherein, when entrance defrost is occurred in continuous 3 times, △ H is more than or equal to TS1+6 DEG C, then defrost time tune next time
Whole for defrost time maximum.
Condition 2：There is low speed wind model for air-conditioner or the defrost situation under blowing-out machine phenomenon occur.
After compressor accumulation the first scheduled time M1 of operation, if there is low speed wind model or there is blowing-out machine phenomenon, if this
When meet difference △ H more than or equal to first predetermined value TS1 and to be detected simultaneously by run time M of compressor pre- more than or equal to second
Fix time M2 when, air-conditioner enters into the defrosting stage, according to the requirement in condition 1, the defrost time determines that but the defrost time is necessary
More than or equal to the 6th scheduled time M6, that is to say, that be less than or equal to for the 6th scheduled time when the defrost time determined according to condition 1
During M6, then defrosted by the 6th scheduled time M6, be more than the 6th scheduled time M6 when the defrost time determined according to condition 1
When, then according to condition the 1 defrost time for determining was defrosted.
The defrosting control method of air-conditioner according to embodiments of the present invention, can not only reduce the frostless defrost under worst cold case
Situation, increases effective heating operation time, improves heating capacity, while the defrosting control method of the present invention becomes according to the different temperature difference
Change situation, the situation of automatic decision heat exchanger frosting, according to the difference of frosting situation, the corresponding defrost time is selected, works as frosting
The shorter defrost time is selected when not serious, increase effective heating operation time, improve heating capacity.When frosting situation is serious,
Increase the Defrost operation time, it is ensured that defrosting is clean.
The defrosting control method of the air-conditioner of the present invention is described in detail below according to a specific embodiment.
Condition 1：
1.1：The continuous operating time M that heats of compressor is more than or equal to 45 minutes
1.2：Difference △ T between pipe temperature T2 of indoor temperature T1 and indoor heat exchanger meets following table requirement：
When the Cumulative Elapsed Time M of compressor is between 45-120 minute, then difference △ T to meet condition as follows：
| Wind shelves | △T |
| Gao Feng | 14 DEG C of ＜ |
| Apoplexy | 15 DEG C of ＜ |
| Low wind | 18 DEG C of ＜ |
When the Cumulative Elapsed Time M of compressor is more than 120 minutes, then difference △ T to meet condition as follows：
| Wind shelves | △T |
| Gao Feng | ＜（14+2）℃ |
| Apoplexy | ＜（15+2）℃ |
| Low wind | ＜（18+2）℃ |
1.3：Difference △ H >=2 DEG C, now it should be noted that in compressor afterwards within 8 minutes for compressor accumulation operation
In running, it is more than first predetermined value TS1 when there is a difference △ H, then the condition can be met always until entering defrosting
Stage.
If condition 1.3 is met prior to condition 1.1 or 1.2, and in the mistake for waiting condition 1.1 and condition 1.2 to meet
Cheng Zhong, the situation between difference △ H and first predetermined value TS1 now will make a reservation for according to difference △ H and first in lasting change
The situation of value TS1 determines the time required for defrost, is now divided into six kinds of situations：
When △ H >=2 DEG C are detected, the DT minute is 5 minutes；
When detect △ H >=（2+2）DEG C when, the DT minute be 5+1 minute；
When detect △ H >=（2+4）DEG C when, the DT minute be 5+2 minute；
When detect △ H >=（2+6）DEG C when, the DT minute be 5+3 minute；
When detect △ H >=（2+8）DEG C when, the DT minute be 5+4 minute；
When detect △ H >=（2+10）DEG C when, the DT minute be 5+5 minute.
Wherein, when the time required for defrost is determined, should also be according to the run time of compressor to defrost time DDT
It is adjusted, to obtain final defrost time DDT, being now divided into five kinds of situations：
As M=45, then with condition 1.3 determine time span be final defrost time DDT；
When 45 ＜ M≤60, then add 1 minute on the basis of the time determined according to condition 1.3；
When 60 ＜ M≤90, then add 2 minutes on the basis of the time determined according to condition 1.3；
When 90 ＜ M≤120, then add 3 minutes on the basis of the time determined according to condition 1.3；
As 120 ＜ M, then add 4 minutes, wherein, defrost time DDT on the basis of the time determined according to condition 1.3
No more than how defrost time maximum 12 minutes, added up all no more than 12 minutes regardless of the time.
Wherein, when entrance defrost is occurred in continuous 3 times, △ H is more than or equal to（2+6）DEG C, then defrost time next time adjust
Whole is 12 minutes.
Condition 2：There is low speed wind model for air-conditioner or the defrost situation under blowing-out machine phenomenon occur.
After compressor accumulation operation 8 minutes, if there is low speed wind model or there is blowing-out machine phenomenon, if now meeting difference
△ H >=2 DEG C and after being detected simultaneously by run time M >=45 minute of compressor, air-conditioner enters into defrost stage, defrost time
Determined according to the requirement in condition 1, but the defrost time was have to be larger than equal to 10 minutes, that is to say, that when determined according to condition 1
When the defrost time was less than or equal to 10 minutes, then defrosted by 10 minutes, be more than 10 points when the defrost time determined according to condition 1
Zhong Shi, then according to condition the 1 defrost time for determining was defrosted.
Now it is illustrated below according to above defrost parameter setting：
1st, the operation of high wind, start recording △ T after running 8 minutes is heated, and compares △ TMAXIf met in 45 minutes
Condition 1.3 i.e. △ H >=2+2 DEG C, and meet condition 1.2 i.e. 14 DEG C of △ T ＜, after running to 45 minutes, then defrosting is entered, if this
When condition 1.3 be still △ H >=2+2 DEG C, then the defrost time is 6 minutes, and the defrost time arrives, then exit defrosting.
2nd, the operation of high wind, start recording △ T after running 8 minutes is heated, and compares △ TMAXIf met in 45 minutes
1.3 conditions are △ H >=2 DEG C, but are unsatisfactory for condition 1.2, then air-conditioner is continued to run with, and when running to 90 minutes, meet condition
1.2 i.e. 14 DEG C of △ T ＜, then enter defrost.If now condition 1.3 is varied for △ H >=2+6 DEG C.Then the defrost time is 5+3+2
=10 minutes, the defrost time arrived, then exit defrost.
3. the operation of high wind, start recording △ T after running 8 minutes is heated, and compares △ TMAXIf reached after 120 minutes
Sufficient condition 1.3 i.e. △ H >=2+10 DEG C, and meet condition 1.2 i.e. 14 DEG C of △ T ＜, then enter defrost.Then the defrost time is 5+5+4=
14 minutes, but because setting defrost time maximum as 12 minutes, then the actual defrost time is 12 minutes.The defrost time arrives, then move back
Go out defrost.
4. the operation of high wind, start recording △ T after running 8 minutes is heated, and compares △ TMAXIf operation went out in 45 minutes
Or existing low speed wind model blowing-out machine phenomenon, and △ H >=2 DEG C, then enter defrosting after running to 45 minutes, and defrosting time is 10 points
Clock.The defrost time arrives, then exit defrost.
Other of air-conditioner according to embodiments of the present invention are constituted and are operated for those of ordinary skills
It is all known, is not detailed herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features, the knot described with reference to the embodiment or example
Structure, material or feature are contained at least one embodiment of the present invention or example.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or spy
Point can be combined in any one or more embodiments or example in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
These embodiments can be carried out with multiple changes, modification, replacement and modification in the case of the principle and objective of the disengaging present invention, this
The scope of invention is limited by claim and its equivalent.
Claims (9)
1. a kind of defrosting control method of air-conditioner, it is characterised in that comprise the steps：
S1：Control the air-conditioner that heating mode is entered, detect run time M of the compressor of the air-conditioner；
S2：When run time M of the compressor is detected more than the first scheduled time M1, detect indoor temperature T1 and the sky
Adjust pipe temperature T2 of the indoor heat exchanger of device and be compared to obtain difference △ T=T2-T1；
S3：Difference △ T to detecting is compared to obtain the maximum △ T of differenceMAX, and judge △ TMAXWith subsequently detection
Difference △ H=△ T between the difference △ T for arrivingMAXWhether-△ T is more than first predetermined value TS1, while by difference △ T and second
Predetermined value TS2 is compared, and the difference △ T for wherein subsequently detecting is less than the maximum △ T of differenceMAX；
S4：When difference △ H is more than or equal to first predetermined value TS1 and difference △ T is less than second predetermined value TS2, while the pressure
When run time M of contracting machine is more than or equal to the second scheduled time M2, the air-conditioner is controlled to enter the defrosting stage, wherein second is pre-
The M2 that fixes time is more than the first scheduled time M1；
S5：In the defrosting stage, when the air-conditioner has run defrost time DDT, defrost terminates, and returns to step S1.
2. the defrosting control method of air-conditioner according to claim 1, it is characterised in that entered according to the air-conditioner and remove
The difference △ H detected during the white stage and the situation of first predetermined value TS1 judge the numerical value of defrost time DDT, now change
White time DDT is DT minute：
When TS1+2 DEG C of ＞ △ H >=TS1 is detected, the DT minute is DT1 minute；
When TS1+4 DEG C of ＞ △ H >=TS1+2 DEG C is detected, the DT minute is DT1+1 minute；
When TS1+6 DEG C of ＞ △ H >=TS1+4 DEG C is detected, the DT minute is DT1+2 minute；
When TS1+8 DEG C of ＞ △ H >=TS1+6 DEG C is detected, the DT minute is DT1+3 minute；
When TS1+10 DEG C of ＞ △ H >=TS1+8 DEG C is detected, the DT minute is DT1+4 minute；
When △ H >=TS1+10 DEG C is detected, the DT minute is DT1+5 minute.
3. the defrosting control method of air-conditioner according to claim 2, it is characterised in that further according to the fortune of compressor
The row time, M was adjusted to defrost time DDT：
When the air-conditioner enters the defrosting stage, when run time M of the compressor is the second scheduled time M2, now institute
The defrost time DDT for stating air-conditioner is DT minute；
When the air-conditioner enters the defrosting stage, run time M of the compressor more than the second scheduled time M2 and is less than
Equal to the 3rd scheduled time M3, now the defrost time DDT of the air-conditioner is DT+1 minute；
When the air-conditioner enters the defrosting stage, run time M of the compressor more than the 3rd scheduled time M3 and is less than
Equal to the 4th scheduled time M4, now the defrost time DDT of the air-conditioner is DT+2 minute；
When the air-conditioner enters the defrosting stage, run time M of the compressor more than the 4th scheduled time M4 and is less than
During equal to the 5th scheduled time M5, now the defrost time DDT of the air-conditioner is DT+3 minute；
When the air-conditioner enters the defrosting stage, when run time M of the compressor is more than the 5th scheduled time M5, now
The defrost time DDT of the air-conditioner is DT+4 minute, wherein, when the defrost time DDT of air-conditioner is maximum more than the defrost time
During value, using defrost time maximum as the defrost time.
4. the defrosting control method of air-conditioner according to claim 3, it is characterised in that the defrost time maximum is
12 minutes.
5. the defrosting control method of air-conditioner according to claim 3, it is characterised in that also comprise the steps：
S6：When run time M of the compressor is detected more than the first scheduled time M1, detect whether the air-conditioner occurs
There is blowing-out machine phenomenon in low speed wind model；
S7：If low speed wind model occur or blowing-out machine phenomenon occur, make a reservation for more than or equal to first the difference △ H is detected
Value TS1 and when detecting run time M of the compressor more than or equal to the second scheduled time M2, controls the air-conditioner to enter
The defrosting stage, and defrost time DDT is more than or equal to the 6th scheduled time M6, if there is not low speed wind model or blowing-out machine occur now
As then entering into step S3.
6. the defrosting control method of air-conditioner according to claim 5, it is characterised in that the 6th scheduled time M6 is
10 minutes.
7. the defrosting control method of the air-conditioner according to any one of claim 3-6, it is characterised in that the air-conditioner
Wind speed be multi gear, the air-conditioner is different in each grade of the second predetermined value.
8. the defrosting control method of air-conditioner according to claim 7, it is characterised in that when the operation of the compressor
Between M meet：During M2≤M≤M5, the air-conditioner high wind shelves, apoplexy shelves, low wind shelves second predetermined value be respectively D1, D2,
D3, when run time M of the compressor meets：During M ＞ M5, the air-conditioner high wind shelves, apoplexy shelves, low wind shelves second
Predetermined value is respectively D1+2, D2+2, D3+2, wherein, D1 ＜ D2 ＜ D3.
9. the defrosting control method of air-conditioner according to claim 8, it is characterised in that in step s3, when the sky
When adjusting the wind speed of device to change, △ TMAXAgain value.
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| CN104913455B (en) * | 2015-06-05 | 2017-11-14 | 美的集团武汉制冷设备有限公司 | Defrosting control method, device and the terminal of air conditioner |
| CN105444344B (en) * | 2015-11-09 | 2019-04-05 | 广东美的制冷设备有限公司 | Defrosting control method, defrosting control device and the air conditioner of air conditioner |
| CN108088055A (en) * | 2017-12-19 | 2018-05-29 | 海信（广东）空调有限公司 | Control method for frequency conversion air conditioner and device |
| CN110631207B (en) * | 2018-06-25 | 2022-06-14 | 青岛海尔空调器有限总公司 | Defrosting control method and device for air conditioner |
| CN110631204A (en) * | 2018-06-25 | 2019-12-31 | 青岛海尔空调器有限总公司 | Defrosting control method and device for air conditioner |
| CN110631189A (en) * | 2018-06-25 | 2019-12-31 | 青岛海尔空调器有限总公司 | Defrosting control method and device for air conditioner |
| CN108917094A (en) * | 2018-07-18 | 2018-11-30 | 奥克斯空调股份有限公司 | A kind of defrosting control method, device and air conditioner |
| CN109458693B (en) * | 2018-11-01 | 2021-01-29 | 奥克斯空调股份有限公司 | Air conditioner external fan control method and device and air conditioner |
| CN112050361B (en) * | 2019-06-06 | 2022-07-19 | 重庆海尔空调器有限公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN110631208A (en) * | 2019-09-30 | 2019-12-31 | 广东美的暖通设备有限公司 | Operation control method, operation control device, air conditioning system, and storage medium |
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