CN109654678A - Air conditioner defrosting control method - Google Patents
Air conditioner defrosting control method Download PDFInfo
- Publication number
- CN109654678A CN109654678A CN201811347497.9A CN201811347497A CN109654678A CN 109654678 A CN109654678 A CN 109654678A CN 201811347497 A CN201811347497 A CN 201811347497A CN 109654678 A CN109654678 A CN 109654678A
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- China
- Prior art keywords
- defrosting
- air conditioner
- preset time
- preset
- defrosting mode
- Prior art date
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- 238000010257 thawing Methods 0.000 title claims abstract description 150
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000004378 air conditioning Methods 0.000 abstract description 9
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 230000007774 longterm Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—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
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides a kind of air conditioner defrosting control methods.Include: step A: controlling the air conditioner and enter defrosting mode, and records the duration that defrosts required for the defrosting mode；Step B: determine the air conditioner in subsequent preset quantity defrosting mode, next time defrosting duration required for defrosting mode defrost required for upper primary defrosting mode duration on the basis of increase corresponding preset duration, so that the air conditioner is in subsequent preset quantity defrosting mode, into each defrosting mode after according to determining corresponding defrosting duration exit the defrosting mode；Step C: successively carrying out the subsequent preset quantity defrosting mode, after be recycled into the step A.Defrosting is clean, chassis nothing left frost, when can effectively prevent the long-term heating operation of air-conditioning, especially relatively low in outdoor temperature, the bottom plate of outdoor unit frosting problem of generation when humidity ratio is larger.
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
It is especially relatively low in outdoor temperature when the long-term heating operation of air-conditioning, it is continuously transported for a long time when humidity ratio is larger
Row, usually there is serious frosting in bottom plate of outdoor unit, since outside humidity is bigger, causes defrosting process slow, in outdoor temperature ratio
In lower situation, bottom plate of outdoor unit can will lead to outdoor unit heat exchanger frosting after longtime running there are remaining frost after defrosting,
To influence air-conditioning heating effect.Under normal conditions, air-conditioning receive start defrost signal after, four-way valve commutation, refrigerant by
Compressor flows to after condenser flows to evaporator again and returns to compressor, is similar to refrigeration mode, utilizes the " high of press discharge
Temperature " gas coolant passes through condenser, to reach defrosting, defrosting purpose.
It inventors herein proposes the following condition for determining defrosting signal: 1, powering on for the first time, the accumulative operation of press 30 minutes (adjustable
It is whole) and continuous operation 1 minute or more, meet frosting condition and allow access into defrosting (without the limitation of the interval time of defrosting twice).2,
After defrosting cycle, heating press 30 minutes (adjustable) of accumulative operation and defrosts at press continuous operation 1 minute twice
Interval time is greater than 45 minutes (adjustable).And inventor is exited according to outdoor unit coil temperature when exiting defrosting mode every time
Defrosting.
Inventor has found that above-mentioned technical proposal has the following problems based on the above situation: special when the long-term heating operation of air-conditioning
Be not it is relatively low in outdoor temperature, usually there is serious frosting in long-term continuous operation when humidity ratio is larger, bottom plate of outdoor unit,
Since humidity is bigger, cause defrosting process slow, in the case where outdoor temperature is relatively low, bottom plate of outdoor unit meeting after defrosting
There are remaining frost, outdoor unit heat exchanger frosting will lead to after longtime running, to influence air-conditioning heating effect.
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
Method can avoid the not clean phenomenon of defrosting, and can make the chassis nothing left frost of outdoor unit.
For this purpose, the invention proposes a kind of air conditioner defrosting control methods comprising:
Step A: controlling the air conditioner and enter defrosting mode, and records the duration that defrosts required for the defrosting mode；
Step B: the air conditioner is determined in subsequent preset quantity defrosting mode, next time required for defrosting mode
Defrosting duration defrost required for upper primary defrosting mode duration on the basis of increase corresponding preset duration so that the sky
Adjust device in subsequent preset quantity defrosting mode, into each defrosting mode after according to determining corresponding defrosting duration exit this
Defrosting mode；
Step C: successively carrying out the subsequent preset quantity defrosting mode, after be recycled into the step A.
Preferably, in the step B, increased preset duration is equal or different in every adjacent defrosting mode twice.
It preferably, further include exiting the defrosting mode according to default exit criteria in the step A；It is described default
Exit criteria are as follows:
Continuous first preset time of the temperature of the outdoor heat exchanger of the air conditioner is more than the first preset temperature；Or,
Continuous second preset time of the temperature of the outdoor heat exchanger is more than the second preset temperature；Described second is default
Time is less than first preset time, and second preset temperature is greater than first preset temperature；Or,
The defrosting duration reaches third preset time.
Preferably, in the step B, increased preset duration is equal and described pre- in every adjacent defrosting mode twice
If the value range of duration is 18s to 22s.
Preferably, the preset quantity is 3,4,5 or 6.
Preferably, in the step A, the air conditioner is controlled according to the first default defrosting condition and enters defrosting mode；
In the step C, the air conditioner is controlled according to the second default defrosting condition and enters defrosting mode.
Preferably, the described first default defrosting condition include the air conditioner the accumulative operation the 4th of compressor it is default when
Between, and the 5th preset time of compressor continuous operation；
The second default defrosting condition includes compressor the 6th preset time of accumulative operation of the air conditioner, and described
The 7th preset time of compressor continuous operation, and apart from last time exit the defrosting mode when time be more than the 8th preset
Time.
Preferably, the 4th preset time is 28min to 32min；5th preset time is 55s to 65s；It is described
6th preset time is 28min to 32min；7th preset time is 55s to 65s；8th preset time is 42min
To 50min.
Preferably, the air conditioner defrosting control method further include: opened in the first time that the air conditioner is heated
Afterwards, into the step A.
Preferably, each defrosting mode includes:
When starting defrosting, the compressor of the air conditioner is made to shut down the 9th preset time, while the air conditioner
Outside blower operates the tenth preset time according to pre-set velocity；It is default that 9th preset time is greater than or equal to the described tenth
Time；
After 11st preset time, change the flow direction of the four-way valve of the air conditioner；Tenth preset time is greater than institute
State the 11st preset time；
After tenth preset time, the outside blower is closed；
After 9th preset time, the compressor is opened；And
When exiting the defrosting mode, the compressor is closed.
Air conditioner defrosting control method of the invention is removed by the increase and the air-conditioning after the certain amount period of defrosting time
Frost, defrosting is clean, chassis nothing left frost, especially relatively low in outdoor temperature when can effectively prevent the long-term heating operation of air-conditioning, wet
The bottom plate of outdoor unit frosting problem of generation when spending bigger.Further, in the increase by defrosting time and centainly
Air-conditioner defrosting after the quantity period can change the condition into defrosting mode, such as enter defrosting by upper electric control for the first time, can be into one
Step prevents bottom plate of outdoor unit frosting.
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:
Step A: control air conditioner enters defrosting mode, and records the duration that defrosts required for defrosting mode.Defrosting mode
Required defrosting duration it can be appreciated that defrosting mode experience duration, that is, enter defrosting mode up to exiting defrosting mode
When between time interval.
Step B: determine that air conditioner in subsequent preset quantity defrosting mode, defrosts required for defrosting mode next time
Duration defrost required for upper primary defrosting mode duration on the basis of increase corresponding preset duration so that air conditioner is rear
In continuous preset quantity defrosting mode, into each defrosting mode after according to determining corresponding defrosting duration exit the defrosting mould
Formula.And increased preset duration is equal or different in every adjacent defrosting mode twice.Preferably, per adjacent defrosting mode twice
In increased preset duration it is equal, and the value range of preset duration be 18s to 22s, preferably 20s.
Step C: successively carrying out subsequent preset quantity defrosting mode, after be recycled into step A.Preset quantity is 3,4,5
Or 6.
The air conditioner defrosting control method of the embodiment of the present invention, by the increase of defrosting time and after the certain amount period
Air-conditioner defrosting, defrosting is clean, chassis nothing left frost, when can effectively prevent the long-term heating operation of air-conditioning, especially in outdoor temperature ratio
It is lower, the bottom plate of outdoor unit frosting problem of generation when humidity ratio is larger.
It in some embodiments of the invention, in step, further include exiting defrosting mode according to default exit criteria.
Default exit criteria are as follows: continuous first preset time of the temperature of the outdoor heat exchanger of air conditioner is more than the first preset temperature；
Or, continuous second preset time of the temperature of outdoor heat exchanger is more than the second preset temperature；Second preset time is less than first
Preset time, the second preset temperature are greater than the first preset temperature；Or, defrosting duration reaches third preset time.First it is default when
Between can be 55s to 65s, preferably 60s.First preset temperature can be 4.8 DEG C to 5.2 DEG C, preferably 5 DEG C.Second preset time
It can be 18s to 22s, preferably 20s.Second preset temperature can be 9 DEG C to 11 DEG C, preferably 10 DEG C.Third preset time can be
9min to 11min, preferably 10min.
In some embodiments of the invention, in step, can enter according to the first default defrosting condition control air conditioner
Defrosting mode.In step C, enter defrosting mode according to the second default defrosting condition control air conditioner.For example, connecting in air conditioner
During reforwarding row, entering defrosting mode according to the first default defrosting condition terminated apart from last time time of defrosting mode, small
Terminated apart from last time time of defrosting mode in entering defrosting mode according to the second default defrosting condition, according to defrosting duration
It increases continuously, quickly enters defrosting.
In some embodiments of the invention, the first default defrosting condition includes the accumulative operation the 4th of compressor of air conditioner
Preset time, and the 5th preset time of compressor continuous operation.First default defrosting condition includes that the compressor of air conditioner is accumulative
Run the 6th preset time, and the 7th preset time of compressor continuous operation, and apart from when the last time exiting defrosting mode
Time is more than the 8th preset time.Preferably, the 4th preset time is 28min to 32min.5th preset time be 55s extremely
65s.6th preset time is 28min to 32min.7th preset time is 55s to 65s.8th preset time be 42min extremely
50min。
In some embodiments of the invention, air conditioner defrosting control method further include: heated in air conditioner
After primary unlatching, A is entered step.Specifically, default except ice-lolly according to first after the first time that air conditioner is heated opens
Part enters defrosting mode.I.e. first default defrosting condition is the condition for powering on control for the first time and entering defrosting.
In some embodiments of the invention, each defrosting mode includes:
When starting defrosting, the compressor of air conditioner is made to shut down the 9th preset time, while the outdoor crosswind of air conditioner
Machine operates the tenth preset time according to pre-set velocity；9th preset time is greater than or equal to the tenth preset time.9th it is default when
Between can be 1min, the tenth preset time can be 55s.Pre-set velocity can be high speed.
After 11st preset time, change the flow direction of the four-way valve of air conditioner；It is default that tenth preset time is greater than the 11st
Time.11st preset time can be 50s.
After tenth preset time, outside blower is closed.
After 9th preset time, compressor is opened.Compressor can 58Hz (adjustable) operating 1min (adjustable) now, then
In (adjustable) the operating 1min (adjustable) of 88Hz, then to (adjustable) operating of target frequency 88Hz.
When exiting defrosting mode, close compressor.
Further, default exit criteria further includes detecting the temperature of outdoor heat exchanger after the 12nd preset time
The duration of degree and the temperature, to guarantee that minimum runing time can just exit defrosting.12nd preset time can be 1.8min
To 2.2min.In defrosting mode, if compressor current, compressor feel elated and exultant etc. protections can effectively continue defrosting mode, if compression
Machine then exits defrosting mode because of protection or disorderly closedown.
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
Step A: controlling the air conditioner and enter defrosting mode, and records the duration that defrosts required for the defrosting mode；
Step B: determine that the air conditioner in subsequent preset quantity defrosting mode, defrosts required for defrosting mode next time
Duration defrost required for upper primary defrosting mode duration on the basis of increase corresponding preset duration so that the air conditioner
In subsequent preset quantity defrosting mode, into each defrosting mode after according to determining corresponding defrosting duration exit the defrosting
Mode；
Step C: successively carrying out the subsequent preset quantity defrosting mode, after be recycled into the step A.
2. air conditioner defrosting control method according to claim 1, which is characterized in that
In the step B, increased preset duration is equal or different in every adjacent defrosting mode twice.
3. air conditioner defrosting control method according to claim 1, which is characterized in that
It further include exiting the defrosting mode according to default exit criteria in the step A；The default exit criteria are as follows:
Continuous first preset time of the temperature of the outdoor heat exchanger of the air conditioner is more than the first preset temperature；Or,
Continuous second preset time of the temperature of the outdoor heat exchanger is more than the second preset temperature；Second preset time
Less than first preset time, second preset temperature is greater than first preset temperature；Or,
The defrosting duration reaches third preset time.
4. air conditioner defrosting control method according to claim 2, which is characterized in that
In the step B, increased preset duration is equal in every adjacent defrosting mode twice, and the value of the preset duration
Range is 18s to 22s.
5. air conditioner defrosting control method according to claim 1, which is characterized in that
The preset quantity is 3,4,5 or 6.
6. air conditioner defrosting control method according to claim 1, which is characterized in that
In the step A, the air conditioner is controlled according to the first default defrosting condition and enters defrosting mode；
In the step C, the air conditioner is controlled according to the second default defrosting condition and enters defrosting mode.
7. air conditioner defrosting control method according to claim 6, which is characterized in that
The first default defrosting condition, which includes that the compressor of the air conditioner is accumulative, runs the 4th preset time, and the compression
The 5th preset time of machine continuous operation；
The second default defrosting condition, which includes that the compressor of the air conditioner is accumulative, runs the 6th preset time, and the compression
The 7th preset time of machine continuous operation, and apart from when the time when last time exiting the defrosting mode being more than the 8th default
Between.
8. air conditioner defrosting control method according to claim 7, which is characterized in that
4th preset time is 28min to 32min；5th preset time is 55s to 65s；
6th preset time is 28min to 32min；7th preset time is 55s to 65s；
8th preset time is 42min to 50min.
9. air conditioner defrosting control method according to claim 1 or 6, which is characterized in that further include:
After the first time that the air conditioner is heated opens, into the step A.
10. air conditioner defrosting control method according to claim 1, which is characterized in that each defrosting mode includes:
When starting defrosting, the compressor of the air conditioner is made to shut down the 9th preset time, while the outdoor of the air conditioner
Crosswind machine operates the tenth preset time according to pre-set velocity；When 9th preset time is default more than or equal to the described tenth
Between；
After 11st preset time, change the flow direction of the four-way valve of the air conditioner；Tenth preset time is greater than described the
11 preset times；
After tenth preset time, the outside blower is closed；
After 9th preset time, the compressor is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811347497.9A CN109654678B (en) | 2018-11-13 | 2018-11-13 | Defrosting control method for air conditioner |
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|---|---|---|---|
| CN201811347497.9A CN109654678B (en) | 2018-11-13 | 2018-11-13 | Defrosting control method for air conditioner |
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| CN109654678B CN109654678B (en) | 2021-05-25 |
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ID=66110922
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110332652A (en) * | 2019-07-25 | 2019-10-15 | 宁波奥克斯电气股份有限公司 | A kind of defrosting control method, device and air conditioner |
| CN112128924A (en) * | 2020-08-27 | 2020-12-25 | 青岛海尔空调器有限总公司 | Defrosting control method for outdoor unit of air conditioner and air conditioner |
| CN113074452A (en) * | 2021-03-19 | 2021-07-06 | 海信（山东）空调有限公司 | Defrosting control method of air conditioner, air conditioner and storage medium |
| CN113175731A (en) * | 2021-04-20 | 2021-07-27 | 海信（山东）空调有限公司 | Defrosting control method of air conditioner and air conditioner |
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