CN107449105B - A kind of control method of air-conditioner defrosting - Google Patents
A kind of control method of air-conditioner defrosting Download PDFInfo
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- CN107449105B CN107449105B CN201710543860.3A CN201710543860A CN107449105B CN 107449105 B CN107449105 B CN 107449105B CN 201710543860 A CN201710543860 A CN 201710543860A CN 107449105 B CN107449105 B CN 107449105B
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides a kind of control methods of air-conditioner defrosting, there is air-conditioning heating mode and air-conditioning work to meet the defrosting mode started after preset trigger condition when heating mode, control method includes: persistently to detect the coil temperature of indoor heat exchanger in air-conditioning work when heating mode；When preset trigger condition is satisfied, air-conditioning switches to defrosting mode from heating mode, and counts air-conditioning and be opened into the time for switching to defrosting mode from this heating mode, which is known as heating mode time Sy；When air-conditioning terminates defrosting, the time of this operation defrosting mode of air-conditioning is obtained, which is known as defrosting mode time Sc；And according to coil temperature, heating mode time Sy and defrosting mode time Sc, determine that air-conditioning enters the Dynamic trigger condition of defrosting mode next time.The trigger condition that control method of the invention can enter defrosting mode to next time is adjusted, so that air-conditioning can carry out defrost on most suitable opportunity, so that its defrosting effect is best.
Description
Technical field
The present invention relates to the control methods of air-conditioning, more particularly to a kind of control method of air-conditioner defrosting.
Background technique
Air-conditioning is in heating operation, if outdoor environment temperature has certain moisture in below freezing and air, in outdoor
Machine heat exchanger surface, which is easy to freeze, forms frost, and white presence will affect the heating performance of air-conditioning.Therefore, in air-conditioning heating process
In, it needs to enter defrosting mode at regular intervals and defrosts.The defrosting trigger condition of air-conditioning greatly affects air-conditioning
Defrosting effect, heating performance and comfort.Existing air-conditioned defrosting precision is not high, and defrosting mode setting is improper can serious shadow
Heating effect is rung, is made troubles for the use of user.
Summary of the invention
It is an object of the present invention to provide a kind of control method of air-conditioner defrosting.
A further object of the present invention is to the defrosting precision of air-conditioning to be improved.
Another further object of the present invention is to the heating effects of air-conditioning to be enhanced.
Particularly, the present invention provides a kind of control method of air-conditioner defrosting, the air-conditioning has heating mode and institute
It states air-conditioning work and meets the defrosting mode started after preset trigger condition when the heating mode, the control method includes:
In the air-conditioning work when heating mode, the coil temperature of indoor heat exchanger is persistently detected；
When the preset trigger condition is satisfied, the air-conditioning switches to the defrosting mode from the heating mode,
And count the air-conditioning and be opened into the time for switching to the defrosting mode from heating mode described in this, which is known as making
Heat pattern time Sy；
When the air-conditioning terminates defrosting, obtaining the air-conditioning, this runs the time of the defrosting mode, which claims
For defrosting mode time Sc；And
According to the coil temperature, heating mode time Sy and the defrosting mode time Sc, the air-conditioning is determined
Enter the Dynamic trigger condition of the defrosting mode next time.
Further, the coil temperature includes:
Overall average temperature Ty of the air-conditioning in the heating mode time Sy inner coil pipe for working in the heating mode
With the air-conditioning when working in the heating mode from the heating mode switch to the defrosting mode before second it is default when
Between inner coil pipe last mean temperature Ts；And
When the air-conditioning work is when the heating mode, at interval of the reality of the primary coil pipe of the first preset time detection
Shi Wendu T.
Further, second preset time is 1 minute, and first preset time is any between 5~15 seconds
Value.
Further, the control method further include:
According to the overall average temperature Ty and the last mean temperature Ts, the calibration mean temperature Tp of the coil pipe is calculated,
And the size of the end mean temperature Ts and the calibration mean temperature Tp.
Further, the calculation formula of the calibration mean temperature Tp are as follows:
Tp=TySy/ (Sy+Sc)+d
Wherein, d is temperature compensation value, and the temperature compensation value is the arbitrary integer between -1 to 2.
Further, the control method further include:
If the end mean temperature Ts is equal to the calibration mean temperature Tp, the air-conditioning enters the defrosting next time
The Dynamic trigger condition of mode is set as the preset trigger condition.
Further, the control method further include:
If the end mean temperature Ts is less than the calibration mean temperature Tp, the air-conditioning enters the defrosting next time
The real time temperature T that the Dynamic trigger condition of mode is set as the coil pipe reaches the calibration mean temperature Tp.
Further, the control method further include:
If the end mean temperature Ts is greater than the calibration mean temperature Tp, the air-conditioning enters the defrosting next time
The Dynamic trigger condition of mode is set as the preset trigger condition and is satisfied the rear air-conditioning extension operation heating
Mode reaches third preset time Sa；Wherein
If the real time temperature T of the coil pipe of the air-conditioning is pre- in the third for extending the operation heating mode
If reaching the calibration mean temperature Tp in time Sa, then the air-conditioning immediately enters the defrosting mode next time.
Further, the third preset time Sa is according to the end mean temperature Ts's and calibration mean temperature Tp
Size determines.
Further, the calculation formula of the third preset time Sa are as follows:
Sa=c (Ts-Tp)
Wherein, c is calibration factor, and Sa is the numerical value as unit of minute, Ts and Tp be by degree Celsius as unit of numerical value.
The control method of the invention work collectively constituted by heating mode and defrosting mode the last by detection
The runing time of coil temperature and each mode in period, triggering item that can in real time to defrosting mode in the duty cycle next time
Part is adjusted, so that air-conditioning can be carried out when the attributes such as environment temperature and/or humidity change on most suitable opportunity
Defrost, so that its defrosting effect reaches best.
Further, control method of the invention can make air-conditioning mould of operation defrosting in time when heating mode is ineffective
Formula extends heating mode runing time when heating effect is good, it is possible thereby to obtain more preferably in shorter defrosting time
Defrosting effect, and greatly promote the heating efficiency of heating mode after defrosting, obtains optimal heating effect, and this control method without
The hardware cost that air-conditioning need to be increased can promote user experience.
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 control method according to an embodiment of the invention；
Fig. 2 is the schematic flow chart of control method in accordance with another embodiment of the present invention.
Specific embodiment
Control method of the invention can be used for defrosting to fixed frequency air conditioner.Specifically, air-conditioning have heating mode and
Air-conditioning work meets the defrosting mode started after preset trigger condition when heating mode.
Fig. 1 is the schematic flow chart of control method according to an embodiment of the invention.Referring to Fig. 1, control method packet
It includes:
Step S100, air-conditioning n-th enter heating mode.
Step S102 detects the coil temperature of air-conditioning indoor heat exchanger.
Step S104, judges whether air-conditioning meets preset trigger condition；If so, S106 is thened follow the steps, if it is not, then returning
Continue to execute step S102.
Step S106, air-conditioning the m times enter defrosting mode, obtain operation n-th heating mode overall process heating mode
Time Sy obtains the overall average temperature Ty of the coil pipe of operation n-th heating mode overall process, obtains operably n times heating mode
The last mean temperature Ts of coil pipe in the last minute of overall process.
Step S108, judges whether air-conditioning is completed the m times defrosting program；If so, S110 is thened follow the steps, if it is not, then
Return continues to execute step S106.
Step S110 obtains the defrosting mode time Sc of the m times defrosting mode overall process of operation.
Step S112 calculates calibration mean temperature Tp.
Step S113 determines the air-conditioning the m+1 times Dynamic trigger condition for entering defrosting mode according to calibration mean temperature Tp.
Specifically, the m in above-mentioned steps and n can be the arbitrary integer greater than 0, and m and n can be equal or different.Work as m=
When n=1, air-conditioning carries out heating mode and defrosting mode for the first time, at this time preset trigger condition can for target empty tune factory from
Band default trigger condition, such as can be temperature control or time control etc..Work as m > 1, when n > 1, air-conditioning had been carried out once
Or repeatedly heating mode and defrosting mode, preset trigger condition can enter the dynamic of defrosting mode at this time for last air-conditioning
Trigger condition that is to say to be trigger condition when entering (n-1)th defrosting mode from the m-1 times heating mode.
Calibration mean temperature Tp and coil temperature, heating mode time Sy and defrosting mode time in above-mentioned steps S112
Sc is related.It that is to say, according to overall average temperature Ty and last mean temperature Ts, calculate the calibration mean temperature Tp of coil pipe.
Particularly, in some embodiments of the invention, the calculation formula of mean temperature Tp is calibrated are as follows:
Tp=TySy/ (Sy+Sc)+d
Wherein, d is temperature compensation value, temperature compensation value be by degree Celsius as unit of numerical value, and can for -1 to 2 it
Between arbitrary integer.Ts and Tp be by degree Celsius as unit of numerical value.
Specifically, temperature compensation value can be determined according to outdoor environment temperature humidity.In some embodiments of the invention, when
Air-conditioning is in the biggish area (for example, relative air humidity be greater than 65%) of outdoor environment humidity, and outdoor environment temperature be in-
2 DEG C to 4 DEG C, d can be set to 2 (degrees Celsius) at this time.It that is to say, be easy to generate frost layer, frost layer under the conditions of this, on outdoor unit
It is too thick not to be greatly attenuated except will lead to indoor heating effect.The heating capacity exported under heating mode at this time can be lower than and can be further
Drag down the average heating capacity of whole cycle, it should defrost as early as possible.
It is lesser regional (for example, relative air humidity is less than 50%) when being in outdoor environment humidity, and outdoor environment temperature
Degree is at 0 DEG C hereinafter, d can be set to -1 (degree Celsius) at this time.Under the conditions of this, outdoor unit is not likely to produce frost layer, heats at this time
The decaying of amount is relatively fewer, that is to say, heating can be appropriately extended on average heating capacity in the heating capacity of air-conditioning output at this time
Runing time.
When local environment humidity and/or temperature are unsatisfactory for above-mentioned condition, d can for default value 0 (degree Celsius) or according to
Further detection and user demand synthetic setting.
Further, control method of the invention makes air-conditioning when it works in heating mode, lasting to detect indoor heat exchange
The coil temperature of device.Lasting detection refers to when air-conditioning work is when heating mode, at interval of the primary disk of the first preset time detection
The real time temperature T of pipe.
Coil temperature may include that the overall average temperature Ty of operation of air conditioner heating mode time Sy inner coil pipe and air-conditioning are working
When heating mode from heating mode switch to defrosting mode before the second preset time inner coil pipe last mean temperature Ts.Temperature in real time
Degree T can be used for calculating overall average temperature Ty and last mean temperature Ts.
It that is to say, the defrosting mode time Sc in heating mode time Sy and step S110 in step S106 is respectively
Refer to: when preset trigger condition is satisfied, air-conditioning switches to defrosting mode from heating mode, and counts air-conditioning from this heating
Mode is opened into the time for switching to defrosting mode, which is known as heating mode time Sy.When air-conditioning terminates defrosting, obtain
The time of this operation defrosting mode of air-conditioning, the time are known as defrosting mode time Sc.
The control method of the invention work collectively constituted by heating mode and defrosting mode the last by detection
The runing time of coil temperature and each mode in period, triggering item that can in real time to defrosting mode in the duty cycle next time
Part is adjusted, so that air-conditioning can be carried out when the attributes such as environment temperature and/or humidity change on most suitable opportunity
Defrost, so that its defrosting effect reaches best.
In some embodiments of the invention, the second preset time can be 1 minute.First preset time can for 5~
Arbitrary value between 15 seconds.In some currently preferred embodiments of the present invention, the first preset time can be 10 seconds, and thus temperature is examined
Operation is surveyed without being excessively frequently executed, and enough coil pipe real-time temperature values (T) can be obtained, to calculate accurately
Overall average temperature Ty and last mean temperature Ts.
Fig. 2 is the schematic flow chart of control method in accordance with another embodiment of the present invention.Referring to fig. 2, control method
Further include:
Step S114, judges whether Tp is equal to Ts；If so, S116 is thened follow the steps, if it is not, thening follow the steps S118.
Step S116, after air-conditioning (n+1)th time enters heating mode, when preset trigger condition is satisfied, air-conditioning enters
The m+1 times defrosting mode.
Step S118, judges whether Ts is greater than Tp；If so, Zhi Hang Fu S122, if it is not, thening follow the steps S120.
Step S120, after air-conditioning (n+1)th time enters heating mode, when the real time temperature T of coil pipe reaches Tp, air-conditioning is vertical
Enter the m+1 times defrosting mode.
Step S122, after air-conditioning (n+1)th time enters heating mode, when preset trigger condition is satisfied, air-conditioning prolongs again
The heating mode of long running Sa duration.
Step S124, during extending operation Sa time heating mode, whether the real time temperature T for detecting coil pipe reaches
Tp；If so, S128 is thened follow the steps, if it is not, thening follow the steps S126.
Step S126, judges whether air-conditioning has extended the operation heating mode Sa time；If so, S128 is thened follow the steps,
Step S122 is continued to execute if it is not, then returning.
Step S128 immediately enters the m+1 times defrosting program.
Step S113 may include step S114 to some or all of step S128 content in a upper embodiment.
In the control method of the invention, the third preset time Sa in step S122 can be according to last mean temperature Ts and school
The size of quasi- mean temperature Tp is determining, specific calculation formula are as follows:
Sa=c (Ts-Tp)
Wherein, c is calibration factor, and specific value can be the arbitrary value between 0.5 to 2.Sa is as unit of minute
Numerical value, Ts and Tp be by degree Celsius as unit of numerical value.That is, the unit that Ts is higher by Tp is degree Celsius as c=1
Temperature value be that preset trigger condition is satisfied the number of minutes that rear air-conditioning needs to extend operation.
Specifically, calibration factor c can carry out selection setting according to the difference of Ts and Tp.As Ts-Tp≤2, calibration factor c
It can be set to 1.As Ts-Tp > 2, calibration factor can be set to 1.5.Further extend the third of operation in heating mode
It during preset time Sa, regards as meeting dynamic defrosting condition if there is T=Tp, runs the m+1 times defrosting journey immediately
Sequence enters back into the m+1 times defrosting program if T is not up to Tp in third preset time Sa after the completion of extending operation.
It that is to say, this control method is next to set by comparing the size of end mean temperature Ts and calibration mean temperature Tp
The secondary Dynamic trigger condition into defrosting mode.If end mean temperature Ts be equal to calibration mean temperature Tp, air-conditioning next time into
The Dynamic trigger condition setting for entering defrosting mode is preset trigger condition.If end mean temperature Ts is less than calibration mean temperature Tp,
It is that the real time temperature T of coil pipe in a heating mode reaches school that then air-conditioning enters the Dynamic trigger condition setting of defrosting mode next time
Quasi- mean temperature Tp.If end mean temperature Ts is greater than calibration mean temperature Tp, air-conditioning enters the dynamic of defrosting mode next time
Trigger condition is set as preset trigger condition and is satisfied rear air-conditioning extension operation heating mode third preset time Sa.Further
Ground, if the real time temperature T of the coil pipe of air-conditioning reaches the average temperature of calibration in the third preset time Sa for extending operation heating mode
Tp is spent, then air-conditioning immediately enters defrosting mode next time.
Control method of the invention guarantees to export maximum average system in the entirely heating period by finding optimal defrosting point
Heat.It that is to say, control method of the invention can make air-conditioning run defrosting mode in time when heating mode is ineffective,
Extend heating mode runing time when heating effect is good, it is possible thereby to obtain more preferably defrosting effect in shorter defrosting time
Fruit, and the heating efficiency of heating mode after defrosting is greatly promoted, extend the efficient heating time, obtain optimal heating effect,
And this control method can promote user experience without increasing the hardware cost of air-conditioning.
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 control method of air-conditioner defrosting, the air-conditioning has heating mode and the air-conditioning work in the heating mould
Meet the defrosting mode started after preset trigger condition when formula, the control method includes:
In the air-conditioning work when heating mode, the coil temperature of indoor heat exchanger is persistently detected；
When the preset trigger condition is satisfied, the air-conditioning switches to the defrosting mode from the heating mode, and unites
It counts out the air-conditioning and is opened into the time for switching to the defrosting mode from heating mode described in this, which is known as heating mould
Formula time Sy；
When the air-conditioning terminates defrosting, obtaining the air-conditioning, this runs the time of the defrosting mode, which is known as removing
White mode time Sc；And
According to the coil temperature, heating mode time Sy and the defrosting mode time Sc, determine one under the air-conditioning
The secondary Dynamic trigger condition into the defrosting mode；Wherein, the coil temperature includes:
Overall average temperature Ty and institute of the air-conditioning in the heating mode time Sy inner coil pipe for working in the heating mode
State air-conditioning when working in the heating mode from the heating mode switch to the defrosting mode before in the second preset time
The last mean temperature Ts of coil pipe.
2. control method according to claim 1, wherein
When the air-conditioning work is when the heating mode, at interval of the real-time temperature of the primary coil pipe of the first preset time detection
Spend T.
3. control method according to claim 2, wherein
Second preset time is 1 minute, and first preset time is the arbitrary value between 5~15 seconds.
4. control method according to claim 2, further includes:
According to the overall average temperature Ty and the last mean temperature Ts, the calibration mean temperature Tp of the coil pipe is calculated, and compare
The size of the end mean temperature Ts and the calibration mean temperature Tp.
5. control method according to claim 4, wherein
The calculation formula of the calibration mean temperature Tp are as follows:
Tp=TySy/ (Sy+Sc)+d
Wherein, d is temperature compensation value, and the temperature compensation value is the arbitrary integer between -1 to 2.
6. control method according to claim 4, further includes:
If the end mean temperature Ts is equal to the calibration mean temperature Tp, the air-conditioning enters the defrosting mode next time
The Dynamic trigger condition be set as the preset trigger condition.
7. control method according to claim 4, further includes:
If the end mean temperature Ts is less than the calibration mean temperature Tp, the air-conditioning enters the defrosting mode next time
The Dynamic trigger condition be set as the real time temperature T of the coil pipe and reach the calibration mean temperature Tp.
8. control method according to claim 4, further includes:
If the end mean temperature Ts is greater than the calibration mean temperature Tp, the air-conditioning enters the defrosting mode next time
The Dynamic trigger condition be set as the preset trigger condition and be satisfied the rear air-conditioning and extend to run the heating mode
Up to third preset time Sa；Wherein
If the real time temperature T of the coil pipe of the air-conditioning is when the third for extending the operation heating mode is default
Between reach the calibration mean temperature Tp in Sa, then the air-conditioning immediately enters the defrosting mode next time.
9. control method according to claim 8, wherein
The third preset time Sa is determined according to the size of the end mean temperature Ts and the calibration mean temperature Tp.
10. control method according to claim 9, wherein
The calculation formula of the third preset time Sa are as follows:
Sa=c (Ts-Tp)
Wherein, c is calibration factor, and Sa is the numerical value as unit of minute, Ts and Tp be by degree Celsius as unit of numerical value.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710543860.3A CN107449105B (en) | 2017-07-05 | 2017-07-05 | A kind of control method of air-conditioner defrosting |
| PCT/CN2018/094541 WO2019007376A1 (en) | 2017-07-05 | 2018-07-04 | Air conditioner defrosting control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710543860.3A CN107449105B (en) | 2017-07-05 | 2017-07-05 | A kind of control method of air-conditioner defrosting |
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| CN107449105A CN107449105A (en) | 2017-12-08 |
| CN107449105B true CN107449105B (en) | 2019-07-02 |
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| CN201710543860.3A Active CN107449105B (en) | 2017-07-05 | 2017-07-05 | A kind of control method of air-conditioner defrosting |
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| WO (1) | WO2019007376A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107449105B (en) * | 2017-07-05 | 2019-07-02 | 青岛海尔空调器有限总公司 | A kind of control method of air-conditioner defrosting |
| CN110631193A (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 |
| CN111189171B (en) * | 2018-11-14 | 2022-04-19 | 青岛海尔空调器有限总公司 | Air conditioner and anti-freezing control method thereof |
| CN109780684B (en) * | 2019-01-24 | 2022-06-24 | 青岛海尔空调电子有限公司 | Air conditioner control method and device, air conditioner and storage medium |
| CN109780683B (en) * | 2019-01-24 | 2022-02-18 | 青岛海尔空调电子有限公司 | Air conditioner control method and device and air conditioner |
| 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 |
| CN111895596B (en) * | 2019-05-06 | 2022-06-10 | 青岛海尔空调器有限总公司 | Control method and device for defrosting of air conditioner and air conditioner |
| CN110332651B (en) * | 2019-07-25 | 2021-07-16 | 宁波奥克斯电气股份有限公司 | Defrosting control method and device and air conditioner |
| CN110645675B (en) * | 2019-09-23 | 2021-02-02 | 南京天加环境科技有限公司 | Improved defrosting control method for air conditioner |
| CN111271905A (en) * | 2020-02-28 | 2020-06-12 | 北京华誉能源技术股份有限公司 | Method for thoroughly defrosting air source heat pump unit |
| CN111306658A (en) * | 2020-03-06 | 2020-06-19 | 宁波德业科技股份有限公司 | Defrosting method of dehumidifier |
| CN113203185B (en) * | 2021-06-01 | 2022-04-19 | 宁波奥克斯电气股份有限公司 | Defrosting control method and device, computer readable storage medium and air conditioner |
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| CN104913455A (en) * | 2015-06-05 | 2015-09-16 | 美的集团武汉制冷设备有限公司 | Defrosting control method, defrosting control device and defrosting control terminal for air conditioner |
| CN106679117A (en) * | 2017-01-24 | 2017-05-17 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method and device |
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| CN107449105A (en) | 2017-12-08 |
| WO2019007376A1 (en) | 2019-01-10 |
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