CN104913452B - Air conditioner and its defrosting control method - Google Patents
Air conditioner and its defrosting control method Download PDFInfo
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- CN104913452B CN104913452B CN201510299855.3A CN201510299855A CN104913452B CN 104913452 B CN104913452 B CN 104913452B CN 201510299855 A CN201510299855 A CN 201510299855A CN 104913452 B CN104913452 B CN 104913452B
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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
- F24F11/62—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
-
- 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
-
- 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
-
- 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
- F24F11/62—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/30—Condensation of water from cooled air
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of air conditioner and its defrosting control method, wherein, defrosting control method comprises the following steps：Obtain the operating current of the accumulated running time of compressor and the compressor in the air conditioner；Indoor environment temperature T1 is detected, and detects the pipe temperature T2 of indoor heat exchanger in the air conditioner；After the air conditioner enters defrosting mode, defrosting time is obtained according to the accumulated running time of the compressor；Judge whether the air conditioner meets the exit criteria that defrosts according to the operating current of the compressor, the indoor environment temperature T1, the pipe temperature T2 of the indoor heat exchanger and the defrosting time；If it is determined that meeting the defrosting exit criteria, then the air conditioner is controlled to exit the defrosting mode.The defrosting control method can realize that air conditioner exits defrosting mode in time after having removed frost, lift heating effect, avoid energy waste.
Description
Technical field
The present invention relates to air-conditioning technical field, the defrosting control method and a kind of air-conditioning of more particularly to a kind of air conditioner
Device.
Background technology
In correlation technique, when air conditioner carries out defrost, the setting of defrost time is generally all worst with air conditioner
Formulated under operating mode, therefore the setting time of defrost is longer, so as to beyond the actually required defrost time energy be caused unrestrained
Take, and influence heating effect.
Also, the condition that air conditioner exits defrost does not make a distinction to different refrigeration systems, and actually high energy efficiency
Refrigeration system and the defrost condition that exits of refrigeration system of low-energy-efficiency be that different, the required defrost time is also different.
Therefore, the air conditioner in correlation technique can not exit defrost, it is necessary to be improved in time when having changed white.
The content of the invention
It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.Therefore, the present invention
One purpose is to propose a kind of defrosting control method of air conditioner, can realize that air conditioner exits defrosting mould in time after having removed frost
Formula, heating effect is lifted, avoids energy waste.
It is another object of the present invention to propose a kind of air conditioner.
To reach above-mentioned purpose, a kind of defrosting control method for air conditioner that one aspect of the present invention embodiment proposes, including
Following steps：Obtain the operating current of the accumulated running time of compressor and the compressor in the air conditioner；Detection is indoor
Environment temperature T1, and detect the pipe temperature T2 of indoor heat exchanger in the air conditioner；After the air conditioner enters defrosting mode, root
Defrosting time is obtained according to the accumulated running time of the compressor；According to the operating current of the compressor, the indoor environment
Temperature T1, the pipe temperature T2 of the indoor heat exchanger and the defrosting time judge whether the air conditioner meets that bar is exited in defrosting
Part；If it is determined that meeting the defrosting exit criteria, then the air conditioner is controlled to exit the defrosting mode.
The defrosting control method of air conditioner according to embodiments of the present invention, by detecting indoor environment temperature T1, interior is changed
The accumulated running time of the pipe temperature T2 of hot device and the compressor of acquisition judges the frosting situation of outdoor heat exchanger, so as to obtain
Defrosting time, then according to the operating current of compressor, indoor environment temperature T1, indoor heat exchanger pipe temperature T2 and defrosting time
To judge whether air conditioner meets the exit criteria that defrosts, and control air conditioner exits defrosting when judging to meet defrosting exit criteria
Pattern, therefore control can be finely divided to the defrosting time of air conditioner under different situations, ensuring that air conditioner thoroughly removed frost
After realize that air conditioner exits defrosting mode in time, avoid beyond actually required defrosting time and caused by energy waste,
Increase the effective time of air conditioner heat-production operation, effectively improve the heating effect of air conditioner and the fluctuation of room temperature.
According to one embodiment of present invention, according to the indoor environment temperature T1 and the pipe temperature T2 of the indoor heat exchanger
Temperature gap △ T=T2-T1 are calculated, wherein, when the air conditioner meets following condition, control described in the air conditioner entrance
Defrosting mode：
(1) when being between M1-M4 minutes the accumulated running time of the compressor, the temperature gap △ T meet the
One preparatory condition, or the temperature gap △ T meet second when the accumulated running time of the compressor being more than M4 minutes
Preparatory condition；
(2) when indoor fan is run with low wind shelves, the pipe temperature T2 of the indoor heat exchanger is less than the first preset temperature, or
The pipe temperature T2 of person's indoor heat exchanger when indoor fan is run with apoplexy shelves is less than the second preset temperature, or when indoor wind
The pipe temperature T2 of the indoor heat exchanger is less than the 3rd preset temperature when machine is run with high wind shelves, wherein, first preset temperature
More than second preset temperature, second preset temperature is more than the 3rd preset temperature；
(3) after the air conditioner is so that the compressor continuously runs M minutes under heating mode, the temperature gap △ T go out
Existing fall is more than or equal to the first temperature threshold TS1；
(4) continuous operating time of the compressor is more than or equal to M1 minutes.
Also, the accumulated running time of the defrosting time and the compressor meets following relation table：
| The accumulated running time runtime (minute) of compressor | Defrosting time (minute) | |
| Situation 1 | Runtime=M1 | DT |
| Situation 2 | M1 ＜ runtime≤M2 | DT1 |
| Situation 3 | M2 ＜ runtime≤M3 | DT1+1 |
| Situation 4 | M3 ＜ runtime≤M4 | DT1+2.5 |
| Situation 5 | M4 ＜ runtime | DT1+4.5 |
Wherein, DT is the first preset time, and DT1 is the second preset time.
According to another embodiment of the invention, when the air conditioner meets following condition, the air conditioner is controlled to enter
Enter the defrosting mode：
(1) when being between M1-M4 minutes the accumulated running time of the compressor, the temperature gap △ T meet the
One preparatory condition, or the temperature gap △ T meet second when the accumulated running time of the compressor being more than M4 minutes
Preparatory condition；
(2) when indoor fan is run with low wind shelves, the pipe temperature T2 of the indoor heat exchanger is less than the first preset temperature, or
The pipe temperature T2 of person's indoor heat exchanger when indoor fan is run with apoplexy shelves is less than the second preset temperature, or when indoor wind
The pipe temperature T2 of the indoor heat exchanger is less than the 3rd preset temperature when machine is run with high wind shelves, wherein, first preset temperature
More than second preset temperature, second preset temperature is more than the 3rd preset temperature；
(3) after the air conditioner is so that the compressor continuously runs M minutes under heating mode, the temperature gap △ T are every
Decline the time needed for second temperature threshold value TS2 more than M5 minutes and be less than M6 minutes, wherein, TS2 ＜ TS1；
(4) continuous operating time of the compressor is more than or equal to M1 minutes.
Also, the accumulated running time of the defrosting time and the compressor meets following relation table：
| The accumulated running time runtime (minute) of compressor | Defrosting time (minute) | |
| Situation 1 | Runtime=M1 | DT-3 |
| Situation 2 | M1 ＜ runtime≤M2 | DT1-2.5 |
| Situation 3 | M2 ＜ runtime≤M3 | DT1-1.5 |
| Situation 4 | M3 ＜ runtime≤M4 | DT1 |
| Situation 5 | M4 ＜ runtime | DT1+1 |
Wherein, DT is the first preset time, and DT1 is the second preset time.
According to one embodiment of present invention, after the compressor continuously runs M minutes, and the compressor is accumulative
When run time is more than or equal to M1 minutes, wherein, if the air-out wind speed of indoor fan is less than default wind speed and the temperature difference
The time that value △ T often decline needed for second temperature threshold value TS2 is more than M5 minutes and is less than M6 minutes, then controls the air conditioner to enter
Enter the defrosting mode, and the defrosting time is the first preset time；If the air-out wind speed of indoor fan is less than default
There is fall and are more than or equal to the 3rd temperature threshold TS3 in wind speed and the temperature gap △ T, then control the air conditioner to enter
Enter the defrosting mode, and the defrosting time is the first preset time, wherein, TS3 ＜ TS1.
According to one embodiment of present invention, when meeting following either condition, judge that the air conditioner removes described in meeting
White exit criteria：
(1) defrosting time arrives；
(2) the operating current continuous N of the compressor meets or exceeds the first current threshold in 9 seconds；
(3) after the air conditioner enters the defrosting mode very first time threshold value, if the Guan Wen of the indoor heat exchanger
T2 is more than or equal to the 4th preset temperature；
(4) after the air conditioner is so that the compressor continuously runs M minutes under heating mode, the temperature gap △ T go out
Existing fall is more than or equal to the 3rd temperature threshold TS3 and the temperature gap △ T often decline needed for second temperature threshold value TS2
Time is more than M5 minutes and is less than M7 minutes, and the time that the air conditioner is defrosted reaches M8 minutes；
(5) after the air conditioner enters the defrosting mode M11 minutes, the pipe temperature T2 of the indoor heat exchanger is obtained most
Small value T2min, if occurring T2-T2min in the second time threshold is more than or equal to the 4th temperature threshold.
To reach above-mentioned purpose, a kind of air conditioner that another aspect of the present invention embodiment proposes, including：Compressor；It is outdoor
Heat exchanger；Indoor heat exchanger；Indoor fan；Temperature detecting module, for detecting indoor environment temperature T1, and detect the air-conditioning
The pipe temperature T2 of indoor heat exchanger in device；Control module, for the accumulated running time for obtaining the compressor and the compressor
Operating current, and after the air conditioner enters defrosting mode, the control module is according to the accumulative operation of the compressor
Time obtains defrosting time, and operating current, the indoor environment temperature T1, the indoor heat exchange according to the compressor
The pipe temperature T2 and the defrosting time of device judge whether the air conditioner meets the exit criteria that defrosts, and are judging to remove described in satisfaction
During white exit criteria, the control module controls the air conditioner to exit the defrosting mode.
Air conditioner according to embodiments of the present invention, by detect indoor environment temperature T1, indoor heat exchanger pipe temperature T2 with
And the accumulated running time of the compressor obtained judges the frosting situation of outdoor heat exchanger, so as to obtain defrosting time, then
Judged whether according to the operating current of compressor, indoor environment temperature T1, the pipe temperature T2 of indoor heat exchanger and defrosting time full
Foot defrosting exit criteria, and defrosting mode is exited when judging to meet defrosting exit criteria, therefore can be to empty under different situations
Adjust the defrosting time of device to be finely divided control, realize that air conditioner exits defrosting mould in time after ensuring that air conditioner has thoroughly removed frost
Formula, avoid beyond actually required defrosting time and caused by energy waste, increase air conditioner heat-production operation it is effective when
Between, effectively improve the heating effect of air conditioner and the fluctuation of room temperature.
According to one embodiment of present invention, the control module is changed according to the indoor environment temperature T1 and the interior
The pipe temperature T2 of hot device calculates temperature gap △ T=T2-T1, wherein, when the air conditioner meets following condition, the control mould
Block controls the air conditioner to enter the defrosting mode：
(1) when being between M1-M4 minutes the accumulated running time of the compressor, the temperature gap △ T meet the
One preparatory condition, or the temperature gap △ T meet second when the accumulated running time of the compressor being more than M4 minutes
Preparatory condition；
(2) when indoor fan is run with low wind shelves, the pipe temperature T2 of the indoor heat exchanger is less than the first preset temperature, or
The pipe temperature T2 of person's indoor heat exchanger when indoor fan is run with apoplexy shelves is less than the second preset temperature, or when indoor wind
The pipe temperature T2 of the indoor heat exchanger is less than the 3rd preset temperature when machine is run with high wind shelves, wherein, first preset temperature
More than second preset temperature, second preset temperature is more than the 3rd preset temperature；
(3) after the air conditioner is so that the compressor continuously runs M minutes under heating mode, the temperature gap △ T go out
Existing fall is more than or equal to the first temperature threshold TS1；
(4) continuous operating time of the compressor is more than or equal to M1 minutes.
Also, the accumulated running time of the defrosting time and the compressor meets following relation table：
| The accumulated running time runtime (minute) of compressor | Defrosting time (minute) | |
| Situation 1 | Runtime=M1 | DT |
| Situation 2 | M1 ＜ runtime≤M2 | DT1 |
| Situation 3 | M2 ＜ runtime≤M3 | DT1+1 |
| Situation 4 | M3 ＜ runtime≤M4 | DT1+2.5 |
| Situation 5 | M4 ＜ runtime | DT1+4.5 |
Wherein, DT is the first preset time, and DT1 is the second preset time.
According to another embodiment of the invention, when the air conditioner meets following condition, the control module control
The air conditioner enters the defrosting mode：
(1) when being between M1-M4 minutes the accumulated running time of the compressor, the temperature gap △ T meet the
One preparatory condition, or the temperature gap △ T meet second when the accumulated running time of the compressor being more than M4 minutes
Preparatory condition；
(2) when indoor fan is run with low wind shelves, the pipe temperature T2 of the indoor heat exchanger is less than the first preset temperature, or
The pipe temperature T2 of person's indoor heat exchanger when indoor fan is run with apoplexy shelves is less than the second preset temperature, or when indoor wind
The pipe temperature T2 of the indoor heat exchanger is less than the 3rd preset temperature when machine is run with high wind shelves, wherein, first preset temperature
More than second preset temperature, second preset temperature is more than the 3rd preset temperature；
(3) after the air conditioner is so that the compressor continuously runs M minutes under heating mode, the temperature gap △ T are every
Decline the time needed for second temperature threshold value TS2 more than M5 minutes and be less than M6 minutes, wherein, TS2 ＜ TS1；
(4) continuous operating time of the compressor is more than or equal to M1 minutes.
Also, the accumulated running time of the defrosting time and the compressor meets following relation table：
| The accumulated running time runtime (minute) of compressor | Defrosting time (minute) | |
| Situation 1 | Runtime=M1 | DT-3 |
| Situation 2 | M1 ＜ runtime≤M2 | DT1-2.5 |
| Situation 3 | M2 ＜ runtime≤M3 | DT1-1.5 |
| Situation 4 | M3 ＜ runtime≤M4 | DT1 |
| Situation 5 | M4 ＜ runtime | DT1+1 |
Wherein, DT is the first preset time, and DT1 is the second preset time.
According to one embodiment of present invention, after the compressor continuously runs M minutes, and the compressor is accumulative
When run time is more than or equal to M1 minutes, wherein, if the air-out wind speed of indoor fan is less than default wind speed and the temperature difference
The time that value △ T often decline needed for second temperature threshold value TS2 is more than M5 minutes and is less than M6 minutes, and the control module then controls
The air conditioner enters the defrosting mode, and the defrosting time is the first preset time；If the air-out of indoor fan
Wind speed is less than default wind speed and the temperature gap △ T fall occur and are more than or equal to the 3rd temperature threshold TS3, the control
Molding block then controls the air conditioner to enter the defrosting mode, and the defrosting time is the first preset time, wherein,
TS3 ＜ TS1.
According to one embodiment of present invention, when meeting following either condition, the control module judges the air-conditioning
Device meets the defrosting exit criteria：
(1) defrosting time arrives；
(2) the operating current continuous N of the compressor meets or exceeds the first current threshold in 9 seconds；
(3) after the air conditioner enters the defrosting mode very first time threshold value, if the Guan Wen of the indoor heat exchanger
T2 is more than or equal to the 4th preset temperature；
(4) after the air conditioner is so that the compressor continuously runs M minutes under heating mode, the temperature gap △ T go out
Existing fall is more than or equal to the 3rd temperature threshold TS3 and the temperature gap △ T often decline needed for second temperature threshold value TS2
Time is more than M5 minutes and is less than M7 minutes, and the time that the air conditioner is defrosted reaches M8 minutes；
(5) after the air conditioner enters the defrosting mode M11 minutes, the pipe temperature T2 of the indoor heat exchanger is obtained most
Small value T2min, if occurring T2-T2min in the second time threshold is more than or equal to the 4th temperature threshold.
Brief description of the drawings
Fig. 1 is the flow chart according to the defrosting control method of the air conditioner of the embodiment of the present invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
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, it is intended to for explaining the present invention, and is not considered as limiting the invention.
The defrosting control method and air-conditioning of the air conditioner that it is proposed according to embodiments of the present invention described with reference to the accompanying drawings
Device.
Fig. 1 is the flow chart according to the defrosting control method of the air conditioner of the embodiment of the present invention.As shown in figure 1, the air-conditioning
The defrosting control method of device comprises the following steps：
S1, obtain the accumulated running time of compressor and the operating current of compressor in air conditioner.
S2, indoor environment temperature T1 is detected, and detect the pipe temperature T2 of indoor heat exchanger in air conditioner.
Wherein, T1 can be detected by indoor environment temperature sensor, T2 is detected by indoor pipe temperature temperature sensor.
S3, after air conditioner enters defrosting mode, defrosting time is obtained according to the accumulated running time of compressor.
S4, sentenced according to the operating current of compressor, indoor environment temperature T1, the pipe temperature T2 of indoor heat exchanger and defrosting time
Whether disconnected air conditioner meets the exit criteria that defrosts.
S5, if it is determined that meeting defrosting exit criteria, then air conditioner is controlled to exit defrosting mode.
Therefore, the present invention is by detecting the tired of the Guan Wen of indoor heat exchanger, indoor environment temperature and the compressor of acquisition
Run time is counted to judge the frosting situation of outdoor heat exchanger, selects required defrosting time accordingly, need not so as to reduce
The defrosting time wanted, increase the effective time of air conditioner heat-production operation, improve the heating capacity of air conditioner.
In an embodiment of the present invention, counted always according to the pipe temperature T2 of the indoor environment temperature T1 and the indoor heat exchanger
Temperature gap △ T=T2-T1 are calculated, and also obtain the maximum △ Tmax in a period of time in temperature gap △ T.Wherein, may be used
A T2 value is sampled per 5s.
According to one embodiment of present invention, when the air conditioner meets following condition, the air conditioner is controlled to enter
The defrosting mode：
(1.1) when being between M1-M4 minutes the accumulated running time of the compressor, the temperature gap △ T meet
First preparatory condition, or the temperature gap △ T meet the when the accumulated running time of the compressor being more than M4 minutes
Two preparatory conditions.
That is, in (1.1) condition, when the accumulated running time of compressor is between M1-M4 minutes, and work as cup
The first preparatory condition that temperature gap △ T between the pipe temperature T2 and indoor environment temperature T1 of interior heat exchanger meet is in table 1 below
Relation.
Table 1
| The wind shelves of indoor fan | △T |
| High wind shelves | ＜ THDEFROST |
| Apoplexy shelves | ＜ TMDEFROST |
| Low wind shelves | ＜ TLDEFROST |
Wherein, THDEFROST, TMDEFROST, TLDEFROST are respectively the set temperature value of corresponding wind shelves, can be according to not
Type with air conditioner sets different values, wherein THDEFROST ＜ TMDEFROST ＜ TLDEFROST.
Also, in (1.1) condition, the accumulated running time of compressor is when M4 is more than minute, and current indoor exchanges heat
The second preparatory condition that temperature gap △ T between the pipe temperature T2 and indoor environment temperature T1 of device meet is the relation in table 2 below.
Table 2
| The wind shelves of indoor fan | △T |
| High wind shelves | ＜ THDEFROST+2 |
| Apoplexy shelves | ＜ TMDEFROST+2 |
| Low wind shelves | ＜ TLDEFROST+2 |
(1.2) when indoor fan is run with low wind shelves, the pipe temperature T2 of the indoor heat exchanger is less than the first preset temperature X3
DEG C, or the pipe temperature T2 of the indoor heat exchanger is less than X4 DEG C of the second preset temperature when indoor fan is run with apoplexy shelves, or
The pipe temperature T2 of person's indoor heat exchanger when indoor fan is run with high wind shelves is less than the 3rd X5 DEG C of preset temperature, wherein, institute
State the first preset temperature and be more than second preset temperature, second preset temperature is more than the 3rd preset temperature, i.e. X3
＞ X4 ＞ X5.
(1.3) after air conditioner is so that the compressor continuously runs M minutes under heating mode, the temperature gap △ T occur
Fall is more than or equal to the first temperature threshold TS1, i.e. and compressor starts to sample and records △ T after continuously running M minutes, when
(there are △ Tmax- △ T >=TS1) when △ T fall is more than or equal to TS1, be then somebody's turn to do (1.3) condition and meet, and be somebody's turn to do (1.3)
Condition meets once, then it is believed that the condition (1.3) meets always until air conditioner enters defrosting mode.
(1.4) continuous operating time of compressor is more than or equal to M1 minutes.
That is, in the present embodiment, while meet condition (1.1), condition (1.2), condition (1.3) and compressor
Continuous operating time is more than or equal to M1 minutes, then controls air conditioner to enter defrosting mode.Also, it can be set and defrosted according to table 3 below
Time, i.e., the accumulated running time of described defrosting time and the compressor meet following relation table：
Table 3
| The accumulated running time runtime (minute) of compressor | Defrosting time (minute) | |
| Situation 1 | Runtime=M1 | DT |
| Situation 2 | M1 ＜ runtime≤M2 | DT1 |
| Situation 3 | M2 ＜ runtime≤M3 | DT1+1 |
| Situation 4 | M3 ＜ runtime≤M4 | DT1+2.5 |
| Situation 5 | M4 ＜ runtime | DT1+4.5 |
Wherein, DT is the first preset time, and DT1 is the second preset time, and DT and DT1 can enter rower according to actual conditions
It is fixed.
According to another embodiment of the invention, when the air conditioner meets following condition, the air conditioner is controlled to enter
Enter the defrosting mode：
(1.1) when being between M1-M4 minutes the accumulated running time of the compressor, the temperature gap △ T meet
First preparatory condition, or the temperature gap △ T meet the when the accumulated running time of the compressor being more than M4 minutes
Two preparatory conditions.
(1.2) when indoor fan is run with low wind shelves, the pipe temperature T2 of the indoor heat exchanger is less than the first preset temperature,
Either when indoor fan is run with apoplexy shelves, the pipe temperature T2 of the indoor heat exchanger is less than the second preset temperature or when interior
The pipe temperature T2 of the indoor heat exchanger is less than the 3rd preset temperature when blower fan is run with high wind shelves, wherein, the described first default temperature
Degree is more than second preset temperature, and second preset temperature is more than the 3rd preset temperature.
(1.4) continuous operating time of the compressor is more than or equal to M1 minutes.
(1.5) after the air conditioner is so that the compressor continuously runs M minutes under heating mode, the temperature gap △ T
Often decline the time needed for second temperature threshold value TS2 more than M5 minutes and be less than M6 minutes, wherein, TS2 ＜ TS1.That is,
Compressor starts to sample and records △ T after continuously running M minutes, and acquisition △ T often decline the time used in second temperature threshold value TS2
T, as M5 ＜ t ＜ M6, then it is somebody's turn to do (1.5) condition and meets, and be somebody's turn to do (1.5) condition and meet once, then it is believed that the condition (1.5)
Meet always until air conditioner enters defrosting mode.
That is, in the present embodiment, while meet condition (1.1), condition (1.2), condition (1.5) and compressor
Continuous operating time is more than or equal to M1 minutes, then controls air conditioner to enter defrosting mode.Also, it can be set and defrosted according to table 4 below
Time, i.e., the accumulated running time of described defrosting time and the compressor meet following relation table：
Table 4
| The accumulated running time runtime (minute) of compressor | Defrosting time (minute) | |
| Situation 1 | Runtime=M1 | DT-3 |
| Situation 2 | M1 ＜ runtime≤M2 | DT1-2.5 |
| Situation 3 | M2 ＜ runtime≤M3 | DT1-1.5 |
| Situation 4 | M3 ＜ runtime≤M4 | DT1 |
| Situation 5 | M4 ＜ runtime | DT1+1 |
Wherein, DT is the first preset time, and DT1 is the second preset time, and DT and DT1 can enter rower according to actual conditions
It is fixed.
According to still another embodiment of the invention, after the compressor continuously runs M minutes, and the compressor is tired
When meter run time is more than or equal to M1 minutes, wherein, if it is indoor fan that the air-out wind speed of indoor fan, which is less than default wind speed,
Air-out is the time that gentle breeze and the temperature gap △ T often decline needed for second temperature threshold value TS2 to be more than M5 minutes and be less than M6
Minute, then control the air conditioner to enter the defrosting mode, and the defrosting time is the first preset time DT；If room
It is that indoor fan air-out the lower range of decrease occurs for gentle breeze and the temperature gap △ T that the air-out wind speed of inner blower, which is less than default wind speed,
Degree is more than or equal to the 3rd temperature threshold TS3 (△ Tmax- △ T >=TS3), then controls the air conditioner to enter the defrosting mode,
And the defrosting time is the first preset time DT, wherein, TS3 ＜ TS1.Therefore, gentle breeze defrosting during anti-cold wind can be achieved.
Wherein, (there are △ Tmax- △ T >=TS3) when △ T fall is more than or equal to TS3, then the condition meets,
And the condition meets once, then it is believed that the condition meets always until air conditioner enters defrosting mode.
According to one embodiment of present invention, when meeting following either condition, judge that the air conditioner removes described in meeting
White exit criteria：
(2.1) defrosting time arrives, i.e., air conditioner starts timing after entering defrosting mode, when timing time reaches removing for setting
During the white time, meet defrosting exit criteria.
(2.2) the operating current continuous N of compressor meets or exceeds the first current threshold M10 amperes for 9 seconds, wherein, M9 and
M10 can be demarcated according to actual conditions.
(2.3) air conditioner enters the defrosting mode very first time threshold value after such as 3 minutes, if the indoor heat exchanger
Pipe temperature T2 be more than or equal to the 4th preset temperature X6.Wherein, X3 ＞ X4 ＞ X5 ＞ X6, X3, X4, X5, X6 can be according to actual conditions
Demarcated.
(2.4) after air conditioner is so that the compressor continuously runs M minutes under heating mode, the temperature gap △ T occur
Fall is more than or equal to the 3rd temperature threshold TS3 (△ Tmax- △ T >=TS3 occur) and the temperature gap △ T and often declines the
Time needed for two temperature threshold TS2 is more than M5 minutes and is less than M7 minutes, and the time that the air conditioner is defrosted reaches
M8 minutes.That is, (2.4) condition of being somebody's turn to do can be divided into：
A, under heating mode, after compressor continuously runs M minutes, (there is △ more than or equal to TS3 in △ T fall
Tmax- △ T >=TS3), the condition meets once, then it is believed that the condition meets always, wherein, TS3 ＜ TS1；
B, under heating mode, after compressor continuously runs M minutes, start to sample and record △ T, obtain △ T and often decline the
Time t used in two temperature threshold TS2, as M5 ＜ t ＜ M7, the condition meets, and the condition meets once, then is believed that
The condition meets always, wherein, TS2 ＜ TS1.
Say, the time that condition a and condition b meet and air conditioner is defrosted reaches M8 minutes simultaneously after, control air-conditioning
Device exits defrosting mode.Wherein, M5 ＜ M8 ＜ M7 ＜ M1 ＜ M2 ＜ M3 ＜ M4.
In an embodiment of the present invention, M, M1, M2, M3, M4, M5, M6, M7, M8 can be demarcated.
(2.5) after air conditioner enters defrosting mode M11 minutes, the pipe temperature T2 of indoor heat exchanger minimum value is obtained
T2min, if the second time threshold T2-T2min occurs and is more than or equal to such as 2 DEG C of the 4th temperature threshold in such as 4 minutes.
To say, air conditioner enters defrosting M11 (can demarcate) after minute, starts to detect T2 (detecting a T2 value per 5s) value,
And T2 minimum value T2min is recorded, if in 4 minutes (timing since record obtains T2min), there are T2-T2min >=2
DEG C (at T2≤- X7 DEG C, it is believed that T2=-X7 DEG C), then air conditioner is controlled to exit defrosting mode, otherwise, air conditioner is according to condition
(2.1), condition (2.2), condition (2.3) or condition (2.4) exit defrosting mode.
In summary, in an embodiment of the present invention, the defrosting time under different air conditioner different situations has been carried out carefully
Sub-control system, on the premise of ensuring that air conditioner has thoroughly removed frost, realize that air conditioner exits defrosting mode in time, avoid beyond
Actually required defrosting time and caused by waste, effectively improve the fluctuation of heating effect and room temperature.
Specifically, in one embodiment of the invention, when air conditioner heat-production is run, after compressor continuously runs M minutes
Start recording △ T, and compare △ Tmax, if it is determined that air conditioner meets above-mentioned condition (1.1), condition (1.2), condition (1.3),
But the continuous operating time of compressor is less than M1 minutes, then air conditioner continues heating operation, does not enter defrosting mode；If
The continuous operating time of compressor is more than or equal to M1 minutes, but is unsatisfactory for above-mentioned condition (1.1), condition (1.2), condition (1.3),
Then air conditioner continues heating operation, does not enter defrosting mode；If it is determined that air conditioner meets above-mentioned condition (1.1), condition
(1.2), condition (1.3), and the continuous operating time of compressor is more than or equal to M1 minutes, then controls air conditioner to enter defrosting mode
Operation, defrosting time determine according to upper table 3.Also, after judging that air conditioner reaches defrosting exit criteria, control air conditioner exits
Defrosting mode, continue to run with heating mode.
Or during air conditioner heat-production operation, compressor continuously runs start recording △ T after M minutes, and compares △ Tmax,
If it is determined that air conditioner meets above-mentioned condition (1.1), condition (1.2), condition (1.5), but the continuous operating time of compressor is small
In M1 minutes, then air conditioner continues heating operation, does not enter defrosting mode；If the continuous operating time of compressor is more than
Equal to M1 minutes, but above-mentioned condition (1.1), condition (1.2), condition (1.5) are unsatisfactory for, then air conditioner continues heating fortune
OK, defrosting mode is not entered；If it is determined that air conditioner meets above-mentioned condition (1.1), condition (1.2), condition (1.5), and compress
The continuous operating time of machine is more than or equal to M1 minutes, then controls air conditioner to be run into defrosting mode, defrosting time is according to upper table 4
It is determined that.Also, after judging that air conditioner reaches defrosting exit criteria, control air conditioner exits defrosting mode, continues to heat mould
Formula is run.
Or during air conditioner heat-production operation, compressor continuously runs start recording △ T after M minutes, and compares △ Tmax,
If meet that above-mentioned condition (1.5) or temperature gap △ T fall occur and be more than or equal to the 3rd temperature threshold TS3 (△ Tmax-
△ T >=TS3), but the continuous operating time of compressor is less than M1 minutes, then and air conditioner continues heating operation, does not enter and removes
White pattern；If the continuous operating time of compressor is more than or equal to M1 minutes, but is unsatisfactory for above-mentioned condition (1.5) or is unsatisfactory for temperature
There is fall and are more than or equal to the 3rd temperature threshold TS3 (△ Tmax- △ T >=TS3) in degree difference △ T, then air conditioner continue into
Row heating operation, does not enter defrosting mode；If meet that above-mentioned condition (1.5) or temperature gap △ T fall occur and be more than
Equal to the 3rd temperature threshold TS3 (△ Tmax- △ T >=TS3), and the continuous operating time of compressor is more than or equal to M1 minutes, then
Air conditioner is controlled to be run into defrosting mode, defrosting time is the first preset time DT.Also, judging that air conditioner reaches defrosting
After exit criteria, control air conditioner exits defrosting mode, continues to run with heating mode.
The defrosting control method of air conditioner according to embodiments of the present invention, by detecting indoor environment temperature T1, interior is changed
The accumulated running time of the pipe temperature T2 of hot device and the compressor of acquisition judges the frosting situation of outdoor heat exchanger, so as to obtain
Defrosting time, then according to the operating current of compressor, indoor environment temperature T1, indoor heat exchanger pipe temperature T2 and defrosting time
To judge whether air conditioner meets the exit criteria that defrosts, and control air conditioner exits defrosting when judging to meet defrosting exit criteria
Pattern, therefore control can be finely divided to the defrosting time of air conditioner under different situations, ensuring that air conditioner thoroughly removed frost
After realize that air conditioner exits defrosting mode in time, avoid beyond actually required defrosting time and caused by energy waste,
Increase the effective time of air conditioner heat-production operation, effectively improve the heating effect of air conditioner and the fluctuation of room temperature.
In addition, embodiments of the invention also proposed a kind of air conditioner, it includes：Compressor, outdoor heat exchanger, interior are changed
Hot device, indoor fan, temperature detecting module and control module.
Wherein, temperature detecting module is used to detect indoor environment temperature T1, and detects indoor heat exchanger in the air conditioner
Pipe temperature T2.Temperature detecting module may include indoor environment temperature sensor and indoor pipe temperature temperature sensor.
Control module is used for accumulated running time and the operating current of the compressor for obtaining the compressor, and in institute
Air conditioner is stated into after defrosting mode, the control module obtains defrosting time according to the accumulated running time of the compressor,
And according to the operating current of the compressor, the indoor environment temperature T1, the pipe temperature T2 of the indoor heat exchanger and described
Defrosting time judges whether the air conditioner meets the exit criteria that defrosts, and when judging to meet the defrosting exit criteria, institute
Stating control module controls the air conditioner to exit the defrosting mode.
According to one embodiment of present invention, the control module is changed according to the indoor environment temperature T1 and the interior
The pipe temperature T2 of hot device calculates temperature gap △ T=T2-T1, and also obtains the maximum in a period of time in temperature gap △ T
△Tmax.Wherein, a T2 value can be sampled per 5s.
Wherein, when the air conditioner meets following condition, the control module controls to be removed described in the air conditioner entrance
White pattern：
(1.1) when being between M1-M4 minutes the accumulated running time of the compressor, the temperature gap △ T meet
First preparatory condition, or the temperature gap △ T meet the when the accumulated running time of the compressor being more than M4 minutes
Two preparatory conditions.
(1.2) when indoor fan is run with low wind shelves, the pipe temperature T2 of the indoor heat exchanger is less than the first preset temperature X3
DEG C, or the pipe temperature T2 of the indoor heat exchanger is less than X4 DEG C of the second preset temperature when indoor fan is run with apoplexy shelves, or
The pipe temperature T2 of person's indoor heat exchanger when indoor fan is run with high wind shelves is less than the 3rd X5 DEG C of preset temperature, wherein, institute
State the first preset temperature and be more than second preset temperature, second preset temperature is more than the 3rd preset temperature, i.e. X3
＞ X4 ＞ X5.
(1.3) after air conditioner is so that the compressor continuously runs M minutes under heating mode, the temperature gap △ T occur
Fall is more than or equal to the first temperature threshold TS1, i.e. and compressor starts to sample and records △ T after continuously running M minutes, when
(there are △ Tmax- △ T >=TS1) when △ T fall is more than or equal to TS1, be then somebody's turn to do (1.3) condition and meet, and be somebody's turn to do (1.3)
Condition meets once, then it is believed that the condition (1.3) meets always until air conditioner enters defrosting mode.
(1.4) continuous operating time of compressor is more than or equal to M1 minutes.
That is, in the present embodiment, while meet condition (1.1), condition (1.2), condition (1.3) and compressor
Continuous operating time is more than or equal to M1 minutes, then controls air conditioner to enter defrosting mode.Also, it can be set and defrosted according to upper table 3
The accumulated running time of time, i.e., described defrosting time and the compressor meets the relation of upper table 3.
According to another embodiment of the invention, when the air conditioner meets following condition, the control module control
The air conditioner enters the defrosting mode：
(1.1) when being between M1-M4 minutes the accumulated running time of the compressor, the temperature gap △ T meet
First preparatory condition, or the temperature gap △ T meet the when the accumulated running time of the compressor being more than M4 minutes
Two preparatory conditions.
(1.2) when indoor fan is run with low wind shelves, the pipe temperature T2 of the indoor heat exchanger is less than the first preset temperature,
Either when indoor fan is run with apoplexy shelves, the pipe temperature T2 of the indoor heat exchanger is less than the second preset temperature or when interior
The pipe temperature T2 of the indoor heat exchanger is less than the 3rd preset temperature when blower fan is run with high wind shelves, wherein, the described first default temperature
Degree is more than second preset temperature, and second preset temperature is more than the 3rd preset temperature.
(1.4) continuous operating time of the compressor is more than or equal to M1 minutes.
(1.5) after the air conditioner is so that the compressor continuously runs M minutes under heating mode, the temperature gap △ T
Often decline the time needed for second temperature threshold value TS2 more than M5 minutes and be less than M6 minutes, wherein, TS2 ＜ TS1.That is,
Compressor starts to sample and records △ T after continuously running M minutes, and acquisition △ T often decline the time used in second temperature threshold value TS2
T, as M5 ＜ t ＜ M6, then it is somebody's turn to do (1.5) condition and meets, and be somebody's turn to do (1.5) condition and meet once, then it is believed that the condition (1.5)
Meet always until air conditioner enters defrosting mode.
That is, in the present embodiment, while meet condition (1.1), condition (1.2), condition (1.5) and compressor
Continuous operating time is more than or equal to M1 minutes, then controls air conditioner to enter defrosting mode.Also, it can be set and defrosted according to upper table 4
The accumulated running time of time, i.e., described defrosting time and the compressor meets the relation of upper table 4.
According to still another embodiment of the invention, after the compressor continuously runs M minutes, and the compressor is tired
When meter run time is more than or equal to M1 minutes, wherein, if the air-out wind speed of indoor fan is less than default wind speed and the temperature
The time that difference △ T often decline needed for second temperature threshold value TS2 is more than M5 minutes and is less than M6 minutes, and the control module is then controlled
Make the air conditioner and enter the defrosting mode, and the defrosting time is the first preset time；If indoor fan goes out
Wind wind speed is less than default wind speed and the temperature gap △ T fall occur and are more than or equal to the 3rd temperature threshold TS3, described
Control module then controls the air conditioner to enter the defrosting mode, and the defrosting time is the first preset time, wherein,
TS3 ＜ TS1.
Wherein, (there are △ Tmax- △ T >=TS3) when △ T fall is more than or equal to TS3, then the condition meets,
And the condition meets once, then it is believed that the condition meets always until air conditioner enters defrosting mode.
According to one embodiment of present invention, when meeting following either condition, the control module judges the air-conditioning
Device meets the defrosting exit criteria：
(2.1) defrosting time arrives, i.e., air conditioner starts timing after entering defrosting mode, when timing time reaches removing for setting
During the white time, meet defrosting exit criteria.
(2.2) the operating current continuous N of compressor meets or exceeds the first current threshold M10 amperes for 9 seconds, wherein, M9 and
M10 can be demarcated according to actual conditions.
(2.3) air conditioner enters the defrosting mode very first time threshold value after such as 3 minutes, if the indoor heat exchanger
Pipe temperature T2 be more than or equal to the 4th preset temperature X6.Wherein, X3 ＞ X4 ＞ X5 ＞ X6, X3, X4, X5, X6 can be according to actual conditions
Demarcated.
(2.4) after air conditioner is so that the compressor continuously runs M minutes under heating mode, the temperature gap △ T occur
Fall is more than or equal to the 3rd temperature threshold TS3 (△ Tmax- △ T >=TS3 occur) and the temperature gap △ T and often declines the
Time needed for two temperature threshold TS2 is more than M5 minutes and is less than M7 minutes, and the time that the air conditioner is defrosted reaches
M8 minutes.That is, (2.4) condition of being somebody's turn to do can be divided into：
A, under heating mode, after compressor continuously runs M minutes, (there is △ more than or equal to TS3 in △ T fall
Tmax- △ T >=TS3), the condition meets once, then it is believed that the condition meets always, wherein, TS3 ＜ TS1；
B, under heating mode, after compressor continuously runs M minutes, start to sample and record △ T, obtain △ T and often decline the
Time t used in two temperature threshold TS2, as M5 ＜ t ＜ M7, the condition meets, and the condition meets once, then is believed that
The condition meets always, wherein, TS2 ＜ TS1.
Say, the time that condition a and condition b meet and air conditioner is defrosted reaches M8 minutes simultaneously after, control air-conditioning
Device exits defrosting mode.Wherein, M5 ＜ M8 ＜ M7 ＜ M1 ＜ M2 ＜ M3 ＜ M4.
In an embodiment of the present invention, M, M1, M2, M3, M4, M5, M6, M7, M8 can be demarcated.
(2.5) after air conditioner enters defrosting mode M11 minutes, the pipe temperature T2 of indoor heat exchanger minimum value is obtained
T2min, if the second time threshold T2-T2min occurs and is more than or equal to such as 2 DEG C of the 4th temperature threshold in such as 4 minutes.
Air conditioner according to embodiments of the present invention, by detect indoor environment temperature T1, indoor heat exchanger pipe temperature T2 with
And the accumulated running time of the compressor obtained judges the frosting situation of outdoor heat exchanger, so as to obtain defrosting time, then
Judged whether according to the operating current of compressor, indoor environment temperature T1, the pipe temperature T2 of indoor heat exchanger and defrosting time full
Foot defrosting exit criteria, and defrosting mode is exited when judging to meet defrosting exit criteria, therefore can be to empty under different situations
Adjust the defrosting time of device to be finely divided control, realize that air conditioner exits defrosting mould in time after ensuring that air conditioner has thoroughly removed frost
Formula, avoid beyond actually required defrosting time and caused by energy waste, increase air conditioner heat-production operation it is effective when
Between, effectively improve the heating effect of air conditioner and the fluctuation of room temperature.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, limited unless otherwise clear and definite.For one of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (10)
1. a kind of defrosting control method of air conditioner, it is characterised in that comprise the following steps：
Obtain the operating current of the accumulated running time of compressor and the compressor in the air conditioner；
Indoor environment temperature T1 is detected, and detects the pipe temperature T2 of indoor heat exchanger in the air conditioner；
After the air conditioner enters defrosting mode, defrosting time is obtained according to the accumulated running time of the compressor；
According to the operating current of the compressor, the indoor environment temperature T1, the pipe temperature T2 of the indoor heat exchanger and described
Defrosting time judges whether the air conditioner meets the exit criteria that defrosts；
If it is determined that meeting the defrosting exit criteria, then the air conditioner is controlled to exit the defrosting mode；
Wherein, temperature gap △ T=T2- are calculated always according to the pipe temperature T2 of the indoor environment temperature T1 and the indoor heat exchanger
T1, wherein, when the air conditioner meets following condition, control the air conditioner to enter the defrosting mode：
(1) when being between M1-M4 minutes the accumulated running time of the compressor, the temperature gap △ T meet that first is pre-
If condition, or the temperature gap △ T meet that second is default when the accumulated running time of the compressor being more than M4 minutes
Condition；
(2) when indoor fan is run with low wind shelves, the pipe temperature T2 of the indoor heat exchanger is less than the first preset temperature, or works as
The pipe temperature T2 of the indoor heat exchanger is less than the second preset temperature when indoor fan is run with apoplexy shelves, or when indoor fan with
The pipe temperature T2 of the indoor heat exchanger is less than the 3rd preset temperature during high wind shelves operation, wherein, first preset temperature is more than
Second preset temperature, second preset temperature are more than the 3rd preset temperature；
(3) after the air conditioner is so that the compressor continuously runs M minutes under heating mode, under the temperature gap △ T occur
Range of decrease degree is more than or equal to the first temperature threshold TS1；
(4) continuous operating time of the compressor is more than or equal to M1 minutes；
Also, after the compressor continuously runs M minutes, and the accumulated running time of the compressor is more than or equal to M1 minutes
When, wherein,
If the air-out wind speed of indoor fan is less than default wind speed and the temperature gap △ T often decline second temperature threshold value TS2
The required time is more than and M5 minutes and is less than M6 minutes, then controls the air conditioner to enter the defrosting mode, and described removes
The white time is the first preset time；
If the air-out wind speed of indoor fan is less than default wind speed and the temperature gap △ T fall occur and are more than or equal to
3rd temperature threshold TS3, then the air conditioner is controlled to enter the defrosting mode, and when the defrosting time is first default
Between, wherein, TS3 ＜ TS1.
2. the defrosting control method of air conditioner according to claim 1, it is characterised in that below the air conditioner meets
During condition, the air conditioner is controlled to enter the defrosting mode：
(1) when being between M1-M4 minutes the accumulated running time of the compressor, the temperature gap △ T meet that first is pre-
If condition, or the temperature gap △ T meet that second is default when the accumulated running time of the compressor being more than M4 minutes
Condition；
(2) when indoor fan is run with low wind shelves, the pipe temperature T2 of the indoor heat exchanger is less than the first preset temperature, or works as
The pipe temperature T2 of the indoor heat exchanger is less than the second preset temperature when indoor fan is run with apoplexy shelves, or when indoor fan with
The pipe temperature T2 of the indoor heat exchanger is less than the 3rd preset temperature during high wind shelves operation, wherein, first preset temperature is more than
Second preset temperature, second preset temperature are more than the 3rd preset temperature；
(3) after the air conditioner is so that the compressor continuously runs M minutes under heating mode, the temperature gap △ T often decline
Time needed for second temperature threshold value TS2 is more than M5 minutes and is less than M6 minutes, wherein, TS2 ＜ TS1；
(4) continuous operating time of the compressor is more than or equal to M1 minutes.
3. the defrosting control method of air conditioner according to claim 1, it is characterised in that the defrosting time and the pressure
The accumulated running time of contracting machine meets following relation table：
Wherein, DT is the first preset time, and DT1 is the second preset time.
4. the defrosting control method of air conditioner according to claim 2, it is characterised in that the defrosting time and the pressure
The accumulated running time of contracting machine meets following relation table：
Wherein, DT is the first preset time, and DT1 is the second preset time.
5. the defrosting control method of air conditioner according to claim 1, it is characterised in that when meeting following either condition
When, judge that the air conditioner meets the defrosting exit criteria：
(1) defrosting time arrives；
(2) the operating current continuous N of the compressor meets or exceeds the first current threshold in 9 seconds；
(3) after the air conditioner enters the defrosting mode very first time threshold value, if the pipe temperature T2 of the indoor heat exchanger is big
In equal to the 4th preset temperature；
(4) after the air conditioner is so that the compressor continuously runs M minutes under heating mode, under the temperature gap △ T occur
Range of decrease degree is more than or equal to the 3rd temperature threshold TS3 and the temperature gap △ T and often declines time needed for second temperature threshold value TS2
More than M5 minutes and it is less than M7 minutes, and the time that the air conditioner is defrosted reaches M8 minutes；
(5) after the air conditioner enters the defrosting mode M11 minutes, the pipe temperature T2 of indoor heat exchanger minimum value is obtained
T2min, if occurring T2-T2min in the second time threshold is more than or equal to the 4th temperature threshold.
A kind of 6. air conditioner, it is characterised in that including：
Compressor；
Outdoor heat exchanger；
Indoor heat exchanger；
Indoor fan；
Temperature detecting module, for detecting indoor environment temperature T1, and detect the pipe temperature T2 of indoor heat exchanger in the air conditioner；
Control module, for obtaining the accumulated running time of the compressor and the operating current of the compressor, and described
After air conditioner enters defrosting mode, the control module obtains defrosting time according to the accumulated running time of the compressor, with
And according to the operating current of the compressor, the indoor environment temperature T1, the indoor heat exchanger pipe temperature T2 and described remove
The white time judges whether the air conditioner meets the exit criteria that defrosts, and when judging to meet the defrosting exit criteria, it is described
Control module controls the air conditioner to exit the defrosting mode；
Wherein, the control module calculates temperature always according to the pipe temperature T2 of the indoor environment temperature T1 and the indoor heat exchanger
Difference △ T=T2-T1, wherein, when the air conditioner meets following condition, the control module controls the air conditioner to enter
The defrosting mode：
(1) when being between M1-M4 minutes the accumulated running time of the compressor, the temperature gap △ T meet that first is pre-
If condition, or the temperature gap △ T meet that second is default when the accumulated running time of the compressor being more than M4 minutes
Condition；
(2) when indoor fan is run with low wind shelves, the pipe temperature T2 of the indoor heat exchanger is less than the first preset temperature, or works as
The pipe temperature T2 of the indoor heat exchanger is less than the second preset temperature when indoor fan is run with apoplexy shelves, or when indoor fan with
The pipe temperature T2 of the indoor heat exchanger is less than the 3rd preset temperature during high wind shelves operation, wherein, first preset temperature is more than
Second preset temperature, second preset temperature are more than the 3rd preset temperature；
(3) after the air conditioner is so that the compressor continuously runs M minutes under heating mode, under the temperature gap △ T occur
Range of decrease degree is more than or equal to the first temperature threshold TS1；
(4) continuous operating time of the compressor is more than or equal to M1 minutes；
Also, after the compressor continuously runs M minutes, and the accumulated running time of the compressor is more than or equal to M1 minutes
When, wherein,
If the air-out wind speed of indoor fan is less than default wind speed and the temperature gap △ T often decline second temperature threshold value TS2
The required time is more than M5 minutes and is less than M6 minutes, and the control module then controls the air conditioner to enter the defrosting mould
Formula, and the defrosting time is the first preset time；
If the air-out wind speed of indoor fan is less than default wind speed and the temperature gap △ T fall occur and are more than or equal to
3rd temperature threshold TS3, the control module then control the air conditioner to enter the defrosting mode, and the defrosting time
For the first preset time, wherein, TS3 ＜ TS1.
7. air conditioner according to claim 6, it is characterised in that when the air conditioner meets following condition, the control
Molding block controls the air conditioner to enter the defrosting mode：
(1) when being between M1-M4 minutes the accumulated running time of the compressor, the temperature gap △ T meet that first is pre-
If condition, or the temperature gap △ T meet that second is default when the accumulated running time of the compressor being more than M4 minutes
Condition；
(2) when indoor fan is run with low wind shelves, the pipe temperature T2 of the indoor heat exchanger is less than the first preset temperature, or works as
The pipe temperature T2 of the indoor heat exchanger is less than the second preset temperature when indoor fan is run with apoplexy shelves, or when indoor fan with
The pipe temperature T2 of the indoor heat exchanger is less than the 3rd preset temperature during high wind shelves operation, wherein, first preset temperature is more than
Second preset temperature, second preset temperature are more than the 3rd preset temperature；
(3) after the air conditioner is so that the compressor continuously runs M minutes under heating mode, the temperature gap △ T often decline
Time needed for second temperature threshold value TS2 is more than M5 minutes and is less than M6 minutes, wherein, TS2 ＜ TS1；
(4) continuous operating time of the compressor is more than or equal to M1 minutes.
8. air conditioner according to claim 6, it is characterised in that the accumulative operation of the defrosting time and the compressor
Time meets following relation table：
Wherein, DT is the first preset time, and DT1 is the second preset time.
9. air conditioner according to claim 7, it is characterised in that the accumulative operation of the defrosting time and the compressor
Time meets following relation table：
Wherein, DT is the first preset time, and DT1 is the second preset time.
10. air conditioner according to claim 6, it is characterised in that when meeting following either condition, the control module
Judge that the air conditioner meets the defrosting exit criteria：
(1) defrosting time arrives；
(2) the operating current continuous N of the compressor meets or exceeds the first current threshold in 9 seconds；
(3) after the air conditioner enters the defrosting mode very first time threshold value, if the pipe temperature T2 of the indoor heat exchanger is big
In equal to the 4th preset temperature；
(4) after the air conditioner is so that the compressor continuously runs M minutes under heating mode, under the temperature gap △ T occur
Range of decrease degree is more than or equal to the 3rd temperature threshold TS3 and the temperature gap △ T and often declines time needed for second temperature threshold value TS2
More than M5 minutes and it is less than M7 minutes, and the time that the air conditioner is defrosted reaches M8 minutes；
(5) after the air conditioner enters the defrosting mode M11 minutes, the pipe temperature T2 of indoor heat exchanger minimum value is obtained
T2min, if occurring T2-T2min in the second time threshold is more than or equal to the 4th temperature threshold.
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| CN108444134A (en) * | 2018-02-14 | 2018-08-24 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
| CN108800435B (en) * | 2018-06-01 | 2021-03-16 | 青岛海尔空调器有限总公司 | Defrosting control method for air conditioner |
| CN108800451B (en) * | 2018-06-01 | 2021-03-16 | 青岛海尔空调器有限总公司 | Defrosting control method for air conditioner |
| 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 |
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| CN112050370A (en) * | 2019-06-07 | 2020-12-08 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
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| CN114110928A (en) * | 2020-08-28 | 2022-03-01 | 广东美的制冷设备有限公司 | Defrosting control method, air conditioner and computer readable storage medium |
| CN112413819A (en) * | 2020-10-22 | 2021-02-26 | 珠海格力电器股份有限公司 | Defrosting control method, controller, air conditioner, storage medium and terminal |
| CN112923516A (en) * | 2021-03-24 | 2021-06-08 | 广东积微科技有限公司 | Air conditioner and defrosting control method |
| CN115235044A (en) * | 2021-04-23 | 2022-10-25 | 美的集团武汉暖通设备有限公司 | Defrosting control method, storage medium and air conditioner |
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