CN109323372A - Air conditioner defrosting control method - Google Patents
Air conditioner defrosting control method Download PDFInfo
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- CN109323372A CN109323372A CN201811209903.5A CN201811209903A CN109323372A CN 109323372 A CN109323372 A CN 109323372A CN 201811209903 A CN201811209903 A CN 201811209903A CN 109323372 A CN109323372 A CN 109323372A
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- defrosting
- air conditioner
- temperature value
- time interval
- tao
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
Abstract
The present invention provides a kind of air conditioner defrosting control methods.Include: detection outdoor environment temperature, obtains ambient temperature value Tao；Defrosting time interval T is determined according to the ambient temperature value Tao；According at least to the defrosting time interval T, controls the air conditioner and start to defrost.Air-conditioning defrosting time interval T nonadjustable phenomenon the phenomenon that (in other words not enough fining) in a certain range twice can mainly be solved, defrosting time interval T is adjusted according to outdoor environment temperature, user can be improved and heat experience, while improving defrosting efficiency, avoid the not clean phenomenon of defrost.That is, defrosting time interval T is matched with outdoor environment temperature Tao fining, that is, guarantee that defrosting is clean, and guarantee heating effect, in the section for being easy frosting, distribute the short point of defrosting time interval T, in the section for being not easy frosting, distributes defrosting time interval T long point.
Description
Technical field
The present invention relates to air conditioner refrigeratings to heat field, more particularly to a kind of air conditioner defrosting control method.
Background technique
When air-conditioning winter heats, the temperature of condenser is low, and surface is easy frosting.Therefore, air-conditioning heating for a period of time
Afterwards, it needs to defrost to condenser.Under normal conditions, after air-conditioning receives and starts to defrost signal, four-way valve commutation, refrigerant
It is flowed to after condenser flows to evaporator again by compressor and returns to compressor, be similar to refrigeration mode, utilize the " high of press discharge
Temperature " gas coolant passes through condenser, to reach defrost, defrosting purpose.
Existing Defrost technology has two following conditions: 1. condition is that defrosting time interval T twice is arranged；2. condition is defrosting
Temperature Te≤Tes (solidifying dew-point temperature) of sensor, wherein solidifying dew-point temperature Tes=C × Tao- α, Tao indicate outdoor environment temperature
Degree, C are coefficient, and 0 DEG C of Tao <, C=0.8；Tao >=0 DEG C, C=0.6, α are coefficient: generally taking α=6.Only meet simultaneously
When above-mentioned two condition, it can just enter defrosting.
1. how defined present condition is: defrosting time interval T is adjusted according to solidifying dew-point temperature Tes twice.If
Tes is less than -13 DEG C, and defrosting time interval T is 75min；If Tes is less than -10 DEG C, defrosting time interval T is 65min；If Tes is big
In or wait -10 DEG C, defrosting time interval T is 45min.According to according to formula Tes=C × Tao- α, it is scaled defrosting time interval
The relationship of T and outdoor environment temperature Tao.
However, it is found by the inventors that however, it is found by the inventors that, outdoor environment temperature is higher, and outdoor unit is less susceptible to frosting.
5.5 DEG C or more are frostless area naturally, near 0 DEG C, very close to air dew point temperature, so -2 DEG C~2 DEG C are very easy
The region of frosting, -2 DEG C or less absolute humidity are very low, and water vapor in air content is few, so frosting starts to reduce again, outdoor ring
Border temperature is lower, and water vapor in air content is fewer (water is ice at this time), and -7 DEG C or less frostings are less prone to instead, are reformed into
Few frost area.
Therefore, it has been recognised by the inventors that (being in the area Shao Shuan) when air-conditioner outdoor unit frosting is few, it is desirable to defrosting time interval T long
A bit；(area Duo Shuan is in) when air-conditioner outdoor unit frosting is more, it is desirable to which defrosting time interval T is shorter.It in this way can be to avoid air-conditioning frequency
Numerous defrosting (being in the area Shao Shuan), and can guarantee that defrosting is clean (in the area Duo Shuan), the purpose done so is to improve the system of user
Heat experience.In prior art, there is no stringent corresponding with frosting degree distribution region for the setting of air-conditioner defrosting time interval T
Get up, at especially > -5 DEG C of Tao, the setting distribution of defrosting time interval only one setting value of T 45min, T are not fine enough
Change.As long as setting T=45min currently, > -5 DEG C of Tao, especially at Tao=0 DEG C or so, it is unclean to often result in defrosting
Such as.Further, inventor is clean in order to defrost, and sets T=30min, and inventor's discovery produces new problem, such as Tao=2
DEG C, a cycle heating capacity is inadequate, is not able to satisfy national standard.And setting T=45min or so can preferentially guarantee national standard to 2 DEG C
Heating capacity requirement.The defrosting time interval that setting is simply changed in inventor's discovery can attend to one thing and lose sight of another.
Summary of the invention
The present invention is directed to overcome at least one defect of existing air conditioner defrosting, a kind of air conditioner defrosting controlling party is provided
Defrosting time interval T is matched with outdoor temperature Tao fining, that is, guarantees that defrosting is clean, and guarantee heating effect by method.
For this purpose, the invention proposes a kind of air conditioner defrosting control methods comprising:
Outdoor environment temperature is detected, ambient temperature value Tao is obtained；
Defrosting time interval T is determined according to the ambient temperature value Tao；
According at least to the defrosting time interval T, controls the air conditioner and start to defrost.
Preferably, it is removed according to described in the relational expression determination between the ambient temperature value Tao and the defrosting time interval T
White time interval T；The relational expression are as follows:
Wherein, the defrosting time interval T
Unit is min, and the unit of the ambient temperature value Tao is DEG C.
Preferably, when the outdoor environment temperature is less than -15 DEG C, determine that the ambient temperature value Tao is -15 DEG C；
When the outdoor environment temperature is greater than 5.5 DEG C, determine that the ambient temperature value Tao is 5.5 DEG C.
Preferably, after the air conditioner exits defrosting, the ambient temperature value is detected.
Preferably, the detection outdoor environment temperature, obtains ambient temperature value Tao；It is true according to the ambient temperature value Tao
Determine defrosting time interval T, specifically include:
Detect the outdoor environment temperature；
It determines that the temperature value obtained is the environment temperature Tao, and defrosting time is determined according to the ambient temperature value Tao
It is spaced T；
The outdoor environment temperature is continued to test until the air conditioner starts to defrost；
Judge whether the temperature value obtained changes and continue preset time, if so, after determining variation and continuing described default
The temperature value of time is the updated environment temperature Tao, and is removed according to the updated ambient temperature value Tao to described
White time interval T is updated.
Preferably, the preset time is 2.5s to 3.5s.
Preferably, the air conditioner defrosting control method further include:
When the air conditioner starts defrosting, outdoor environment temperature is detected, ambient temperature value x is obtained；
Defrosting time y is determined according to the ambient temperature value x；
After reaching the defrosting time y, defrosting is exited.
Preferably, the defrosting time is determined according to the relational expression between the defrosting time y and the ambient temperature value x
y；The relational expression isWherein, the unit of the defrosting time y is min, described
The unit of ambient temperature value x is DEG C.
Preferably, described according at least to the defrosting time interval T, it controls the air conditioner and starts to defrost, specifically include:
According to the wind speed of the defrosting time interval T and the outdoor unit of the air conditioner, controls the air conditioner and start to remove
Frost；Or,
According to the blower electric current of the defrosting time interval T and the outdoor unit of the air conditioner, controls the air conditioner and open
Begin to defrost；Or,
According to the temperature and solidifying dew-point temperature of the defrosting sensor detection of the defrosting time interval T, the air conditioner, control
The air conditioner is made to start to defrost.
Preferably, the air conditioner defrosting control method further include:
When the air conditioner starts defrosting, the compressor of the air conditioner is made to shut down the first preset time, while institute
The blower for stating outdoor unit of the air conditioner operates the second preset time according to pre-set velocity；First preset time is greater than or equal to
Second preset time；
After third preset time, change the flow direction of the four-way valve of the air conditioner；Second preset time is greater than or waits
In the third preset time；
After second preset time, the blower of the outdoor unit is closed；
After first preset time, the compressor is opened；
After 4th preset time, the compressor is closed；
After 5th preset time, defrosting is exited；And the defrosting time y is equal to first preset time, the described 4th
The sum of preset time and the 5th preset time.
Air conditioner defrosting control method of the invention, can mainly solve air-conditioning twice defrosting time interval T in a certain range
Interior nonadjustable phenomenon the phenomenon that (in other words not enough fining), adjusts defrosting time interval T according to outdoor environment temperature, can be with
It improves user and heats experience, while improving defrosting efficiency, avoid the not clean phenomenon of defrost.That is, by defrosting time interval T and outdoor ring
Temperature Tao fining matching in border guarantees that defrosting is clean, and guarantees heating effect, at the section for being easy frosting, distribution defrosting
Between be spaced the short point of T, in the section for being not easy frosting, distribute defrosting time interval T long point.
Further, in air conditioner defrosting control method of the invention, defrosting time length and outdoor unit frosting is serious
Degree matching is got up, i.e., the long point of defrosting time is distributed in frosting critical regions, and the short point of defrosting time is not distributed in critical regions for frosting, is mentioned
High defrosting efficiency avoids the not clean phenomenon that defrosts.Further, it is ensured that defrosting time is relatively long near 0 DEG C, improves defrosting
Efficiency avoids the not clean phenomenon that defrosts.It can solve the problems, such as that the air-conditioner defrosting time is unmatched with operating condition, improve the defrosting under each operating condition
Efficiency.Because air-conditioning, under different operating conditions, outdoor unit frosting degree is different, it is therefore desirable to defrosting time be also not
The same.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Detailed description of the invention
Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is the schematic flow chart of air conditioner defrosting control method according to an embodiment of the invention.
Specific embodiment
Fig. 1 is the schematic flow chart of air conditioner defrosting control method according to an embodiment of the invention.Such as Fig. 1 institute
Show, it may include following steps that the embodiment of the invention provides a kind of air conditioner defrosting control methods:
Outdoor environment temperature is detected, ambient temperature value Tao is obtained.For example, can be detected after air conditioner exits defrosting every time
Ambient temperature value.
Defrosting time interval T is determined according to ambient temperature value Tao.
According at least to defrosting time interval T, controls air conditioner and start to defrost.For example, only on the basis of defrosting time interval T,
Control air conditioner starts to defrost.That is, the time when air conditioner heat-production time gap last time exits defrosting reaches corresponding
Defrosting time interval T after, control air conditioner start to defrost.Certainly, after also carrying out comprehensive descision in combination with other conditions, control
Air conditioner starts to defrost.
In some preferred embodiments of the invention, according to the pass between ambient temperature value Tao and defrosting time interval T
It is that formula determines defrosting time interval T.Relational expression are as follows:
Wherein, the unit of defrosting time interval T
For min, the unit of ambient temperature value Tao is DEG C.Int is that a numerical value is rounded downwards as the function of immediate integer.
The air conditioner defrosting control method of the embodiment of the present invention, can be by defrosting time interval T and outdoor environment temperature Tao essence
Refinement matching guarantees that defrosting is clean, and guarantees heating effect, in the section for being easy frosting, distribution defrosting time interval T is short
Point distributes defrosting time interval T long point in the section for being not easy frosting.
In the embodiment, defrosting time interval T reduced before this with the increase of outdoor environment temperature Tao, rear to increase, in Tao
=0 DEG C, defrosting time interval T is minimum.Such setting not only can guarantee that defrosting was clean, but also can guarantee heating effect.Such as Tao
At=0 DEG C, T=45min in prior art, overlong time, outdoor unit frosting is very more, causes defrosting unclean, and
Be remaining remaining frost be it is more and more, furthermore in the latter half of a cycle, since frosting is too many, heating capacity decaying is very tight
Weight, leaving air temp is very low, causes heating effect poor.The application is more smart by defrosting time interval T and outdoor environment temperature Tao
The matching of refinement, it is more reasonable to be arranged, that is, can guarantee that defrosting is clean, and can guarantee heating effect.
Further, when outdoor environment temperature is less than -15 DEG C, determine that ambient temperature value Tao is -15 DEG C.In outdoor ring
When border temperature is greater than 5.5 DEG C, determine that ambient temperature value Tao is 5.5 DEG C.
In some embodiments of the invention, outdoor environment temperature is detected, ambient temperature value Tao is obtained.According to environment temperature
Angle value Tao determines defrosting time interval T, specifically includes:
Detect outdoor environment temperature.
It determines that the temperature value obtained is environment temperature Tao, and defrosting time interval T is determined according to ambient temperature value Tao.
Outdoor environment temperature is continued to test until air conditioner starts to defrost.
Judge whether the temperature value obtained changes and continue preset time, if so, after determining variation and continuing preset time
Temperature value be updated environment temperature Tao, and according to updated ambient temperature value Tao to defrosting time interval T carry out
It updates.Preset time is 2.5s to 3.5s, preferably 3s.
In this embodiment, that is to say, that, can according to the relational expression between ambient temperature value Tao and defrosting time interval T
Defrosting time interval T is calculated, since ambient temperature value Tao is real-time change, does not enter next time exiting defrosting
Before defrosting, real-time detection Tao, if Tao variation be Tao ', and Tao ' maintain 3 seconds, then according to Tao ' by ambient temperature value Tao with
Relational expression between the T of defrosting time interval updates defrosting time interval T, before not entering defrosting next time, persistently carries out the real-time inspection
Survey process defrosts next time until meeting defrosting condition and entering.
For example, exit defrosting do not enter next time defrosting before, detect Tao=1.5 for the first time, then T=41min, continue in real time inspection
Tao is surveyed, if Tao variation is Tao '=2.6, and continues 3s and keep Tao '=2.6, then by ambient temperature value Tao and defrosting time
The relational expression being spaced between T, calculating are updated to T=48min, before not entering defrosting next time, persistently carry out the real-time detection, if
Tao '=2.6 are unchanged again, then final defrosting interval time is T=48min.
In some embodiments of the invention, air conditioner defrosting control method further includes following steps:
When the air conditioner starts defrosting, outdoor environment temperature is detected, ambient temperature value x is obtained.When air conditioner starts
When defrosting, multiple outdoor environment temperatures can be continuously obtained, determine that the average value of multiple outdoor environment temperatures is ambient temperature value
x。
Defrosting time y is determined according to ambient temperature value x.That is, defrosting time length and outdoor unit frosting is serious
Degree matching is got up, i.e., the long point of defrosting time is distributed in frosting critical regions, and the short point of defrosting time is not distributed in critical regions for frosting, is mentioned
High defrosting efficiency avoids the not clean phenomenon that defrosts.
After reaching defrosting time y, defrosting is exited.After exiting defrosting, air conditioner can enter room according to inner setting program
Interior heating mode or other operating modes.
It is true according to the relational expression between defrosting time y and ambient temperature value x in some preferred embodiments of the invention
Determine defrosting time y.Relational expression isWherein, the unit of defrosting time y is min, ring
The unit of border temperature value x is DEG C.
In this embodiment, it should be noted that when 5.5 DEG C of x >, will not generally enter defrosting, but some are special
Situation may enter defrosting, therefore when 5.5 DEG C of x >, y=4min is set so as to exit defrosting, because after entering defrosting,
Defrosting must be exited.
In some embodiments of the invention, described according at least to the defrosting time interval T, it controls the air conditioner and opens
Begin to defrost, specifically include:
According to the wind speed of the defrosting time interval T and the outdoor unit of the air conditioner, controls the air conditioner and start to remove
Frost.Or,
According to the blower electric current of the defrosting time interval T and the outdoor unit of the air conditioner, controls the air conditioner and open
Begin to defrost.Or,
According to the temperature and solidifying dew-point temperature of the defrosting sensor detection of the defrosting time interval T, the air conditioner, control
The air conditioner is made to start to defrost.
Specifically, in some embodiments, wind speed can be placed in air-conditioner outdoor unit outlet grid maximum outlet air velocity location to pass
Sensor.
When air conditioner starts heating every time, exits when defrosting starts heating in air conditioner or opened for the first time in air conditioner
When opening heating, the wind speed of outdoor unit or the wind speed of default outdoor unit are detected, the first wind speed is obtained.First wind speed also is understood as
The wind speed of blower when not having any white on outdoor unit.
The wind speed for detecting outdoor unit, obtains the second wind speed.The time interval that can be 30 seconds according to the period detects wind speed, obtains
Second wind speed.
Difference between the first wind speed and the second wind speed is less than or equal to preset difference value, and when lasting preset duration, with
And the time after the last defrosting, when being greater than corresponding defrosting time interval T, control air conditioner starts to defrost.
For inventor's discovery because as outdoor unit frosting increases, wind speed is ever-reduced.When wind speed is reduced to centainly
Degree then shows that the frost layer on outdoor unit is relatively thick, defrosts.In conjunction with defrosting time interval T, can prevent wind speed by
In the wind speed incidental mutations phenomenon that the reasons such as vibration occur, maloperation can be prevented.Continue preset duration can for 1.5 to
3min, preferably 2min.Air velocity transducer detection accuracy is high, is changed by wind speed before and after frosting, when can be defrosted with accurate judgement
Machine improves user and heats comfort.Certainly, when outdoor unit heat exchanger is covered with dust all over, the judgement of defrosting opportunity is nor affected on, because of root
Judge according to the wind speed difference before and after frosting.
In other embodiments of the invention, defrosting is exited when air conditioner starts heating every time, in air conditioner
When starting heating or when air conditioner opens heating for the first time, the blower electric current of outdoor unit or the blower electricity of default outdoor unit are detected
Stream, obtains the first electric current.
The blower electric current for detecting outdoor unit, obtains the second electric current.
Difference between the first electric current and the second electric current is less than or equal to preset difference value, and when lasting preset duration, with
And the time after the last defrosting, when being greater than corresponding defrosting time interval T, control air conditioner starts to defrost.
In some embodiments of the invention, when starting defrosting, the compressor of air conditioner is made to shut down first default
Time, while the blower of outdoor unit of the air conditioner operates the second preset time according to pre-set velocity.First preset time be greater than or
Equal to the second preset time.When starting defrosting, the blower of outdoor unit can be improved, so that the blower of outdoor unit is according to pre-set velocity
Operate the second preset time.It could also say that, so that the blower of outdoor unit is run at high speed the second preset time, to unload refrigeration system
Pressure.
After third preset time, change the flow direction of the four-way valve of air conditioner.It is pre- that second preset time is greater than or equal to third
If the time.After second preset time, the blower of outdoor unit is closed.After first preset time, compressor is opened.
After 4th preset time, close compressor.After 5th preset time, defrosting is exited.Switchback heating mode.And it defrosts
Time y is equal to the sum of the first preset time, the 4th preset time and the 5th preset time.Effective defrosting time can be default for the 4th
Time.
First preset time is 50s to 70s, preferably 60s.Second preset time is 45s to 65s, preferably 55s.The
Three preset times are 40s to 60s, preferably 50s.5th preset time is 50s to 70s, preferably 60s.When first is default
Between after, make the electronic expansion valve opening maximum opening of air conditioner, also to reduce the refrigeration mode used when defrosting as much as possible
Influence to room temperature.After starting defrosting or after the first preset time, the blower of the indoor unit of air conditioner is closed, with to the greatest extent
Influence of the refrigeration mode used when possibly reducing defrosting to room temperature.After the first preset time, make compressor with pre-
If frequency is run.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein multiple shows
Example property embodiment still without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or deduce out many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers all such other variations or modifications.
Claims (10)
1. a kind of air conditioner defrosting control method characterized by comprising
Outdoor environment temperature is detected, ambient temperature value Tao is obtained；
Defrosting time interval T is determined according to the ambient temperature value Tao；
According at least to the defrosting time interval T, controls the air conditioner and start to defrost.
2. air conditioner defrosting control method according to claim 1, which is characterized in that
The defrosting time interval is determined according to the relational expression between the ambient temperature value Tao and the defrosting time interval T
T；The relational expression isWherein, the defrosting time
The unit for being spaced T is min, and the unit of the ambient temperature value Tao is DEG C.
3. air conditioner defrosting control method according to claim 2, which is characterized in that
When the outdoor environment temperature is less than -15 DEG C, determine that the ambient temperature value Tao is -15 DEG C；
When the outdoor environment temperature is greater than 5.5 DEG C, determine that the ambient temperature value Tao is 5.5 DEG C.
4. air conditioner defrosting control method according to claim 1, which is characterized in that
After the air conditioner exits defrosting, the ambient temperature value is detected.
5. air conditioner defrosting control method according to claim 1 or 4, which is characterized in that
The detection outdoor environment temperature, obtains ambient temperature value Tao；Defrosting time is determined according to the ambient temperature value Tao
It is spaced T, is specifically included:
Detect the outdoor environment temperature；
It determines that the temperature value obtained is the environment temperature Tao, and defrosting time interval is determined according to the ambient temperature value Tao
T；
The outdoor environment temperature is continued to test until the air conditioner starts to defrost；
Judge whether the temperature value obtained changes and continue preset time, if so, after determining variation and continuing the preset time
Temperature value be the updated environment temperature Tao, and when according to the updated ambient temperature value Tao to the defrosting
Between interval T be updated.
6. air conditioner defrosting control method according to claim 5, which is characterized in that
The preset time is 2.5s to 3.5s.
7. according to air conditioner defrosting control method described in right 1, which is characterized in that further include:
When the air conditioner starts defrosting, outdoor environment temperature is detected, ambient temperature value x is obtained；
Defrosting time y is determined according to the ambient temperature value x；
After reaching the defrosting time y, defrosting is exited.
8. air conditioner defrosting control method according to claim 7, which is characterized in that
The defrosting time y is determined according to the relational expression between the defrosting time y and the ambient temperature value x；The relationship
Formula isWherein, the unit of the defrosting time y is min, the ambient temperature value
The unit of x is DEG C.
9. air conditioner defrosting control method according to claim 1, which is characterized in that
It is described according at least to the defrosting time interval T, control the air conditioner and start to defrost, specifically include:
According to the wind speed of the defrosting time interval T and the outdoor unit of the air conditioner, controls the air conditioner and start to defrost；
Or,
According to the blower electric current of the defrosting time interval T and the outdoor unit of the air conditioner, controls the air conditioner and start to remove
Frost；Or,
According to the temperature and solidifying dew-point temperature of the defrosting sensor detection of the defrosting time interval T, the air conditioner, institute is controlled
Air conditioner is stated to start to defrost.
10. air conditioner defrosting control method according to claim 1, which is characterized in that further include:
When the air conditioner starts defrosting, the compressor of the air conditioner is made to shut down the first preset time, while the sky
The blower of the outdoor unit of device is adjusted to operate the second preset time according to pre-set velocity；First preset time is greater than or equal to described
Second preset time；
After third preset time, change the flow direction of the four-way valve of the air conditioner；Second preset time is greater than or equal to institute
State third preset time；
After second preset time, the blower of the outdoor unit is closed；
After first preset time, the compressor is opened；
After 4th preset time, the compressor is closed；
After 5th preset time, defrosting is exited；And the defrosting time y is preset equal to first preset time, the described 4th
The sum of time and the 5th preset time.
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| CN109883127A (en) * | 2019-03-06 | 2019-06-14 | 广东瑞星新能源科技有限公司 | A kind of intelligent defrosting control method |
| CN110044036A (en) * | 2019-02-27 | 2019-07-23 | 青岛海尔空调电子有限公司 | Heat source tower control method, control device and heat source tower |
| CN110243061A (en) * | 2019-06-20 | 2019-09-17 | 广东美的暖通设备有限公司 | Control method, air conditioner and computer readable storage medium |
| CN111306854A (en) * | 2020-03-05 | 2020-06-19 | 浙江中广电器股份有限公司 | Defrosting control method, processor and air source heat pump system |
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| CN111895601A (en) * | 2019-05-06 | 2020-11-06 | 青岛海尔空调器有限总公司 | Control method and device for defrosting of air conditioner and air conditioner |
| CN111895598A (en) * | 2019-05-06 | 2020-11-06 | 青岛海尔空调器有限总公司 | Control method and device for defrosting of air conditioner and air conditioner |
| CN111895591B (en) * | 2019-05-06 | 2021-12-21 | 重庆海尔空调器有限公司 | Control method and device for defrosting of air conditioner and air conditioner |
| CN111895598B (en) * | 2019-05-06 | 2022-04-19 | 青岛海尔空调器有限总公司 | Control method and device for defrosting of air conditioner and air conditioner |
| CN110243061A (en) * | 2019-06-20 | 2019-09-17 | 广东美的暖通设备有限公司 | Control method, air conditioner and computer readable storage medium |
| CN111306854A (en) * | 2020-03-05 | 2020-06-19 | 浙江中广电器股份有限公司 | Defrosting control method, processor and air source heat pump system |
| 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 |
| CN112128838A (en) * | 2020-09-15 | 2020-12-25 | 青岛众链创新技术研究院有限公司 | Frost prevention heat pump system |
| WO2023241068A1 (en) * | 2022-06-14 | 2023-12-21 | 青岛海尔空调器有限总公司 | Air conditioner control method and system, and storage medium |
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