CN108488995A - Air conditioner defrosting control method - Google Patents
Air conditioner defrosting control method Download PDFInfo
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- CN108488995A CN108488995A CN201810152036.XA CN201810152036A CN108488995A CN 108488995 A CN108488995 A CN 108488995A CN 201810152036 A CN201810152036 A CN 201810152036A CN 108488995 A CN108488995 A CN 108488995A
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- air conditioner
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- outdoor fan
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—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
- F24F2140/50—Load
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention belongs to air conditioner technical fields, and in particular to a kind of air conditioner defrosting control method.In order to more accurately judge that the opportunity into defrosting, air conditioner defrosting control method proposed by the present invention include the following steps:In the case of air conditioner is in heating condition, the real-time current value of outdoor fan is detected;Calculate the attenuation degree of the real-time current value of outdoor fan;Judged whether that air conditioner is made to enter defrosting mode according to attenuation degree.Since corresponding variation can occur with outdoor coil pipe used frosting degree for the size of current of outdoor fan, and the attenuation degree of the real-time current value of outdoor fan can accurately reflect the situation of change of the electric current of outdoor fan, therefore outdoor coil pipe used frosting degree can more accurately be reflected according to the attenuation degree of the real-time current value of outdoor fan, to more accurately select defrosting opportunity, it can effectively eliminate and limitation when frosting degree is judged using outdoor coil temperature in the prior art, the defrosting number of air conditioner is reduced, user experience is promoted.
Description
Technical field
The invention belongs to air conditioner technical fields, and in particular to a kind of air conditioner defrosting control method.
Background technology
Air conditioner as a kind of equipment that can adjust indoor environment temperature, its working principle is that:It is being followed by refrigerant
Between endless tube road by the state of high voltage/low voltage/gaseous state/liquid convert make indoor environment temperature reduce or increase, i.e., from
From the perspective of indoor unit, air conditioner is in refrigeration or heating condition.When air conditioner heat-production is run, in certain humidity item
If outdoor coil temperature is too low to lead to frosting situation under part, and outdoor coil pipe used frosting can cause the heat exchange of outdoor heat exchanger to be imitated
Rate reduces, and influences the heating effect of air conditioner, reduces the comfort of indoor environment, influence user experience.Therefore, at air conditioner
In the case of heating condition, the outdoor coil pipe used progress to air conditioner is needed effectively to defrost in time.
Existing technical solution is typically that the degree of outdoor coil pipe used frosting is judged by humidity and outdoor coil temperature, then
It is operated according to corresponding defrosting is carried out the case where outdoor coil pipe used frosting.But it is this judge frosting mode require it is outdoor coil pipe used
The accuracy of sensor is very high, and just more accurate well in outdoor heat exchanger shunting, once outdoor heat exchanger
Shunt it is bad, outdoor coil pipe used sensor be then unable to judge accurately the roads Chu Mei shunting evaporating temperature (outdoor coil pipe used sensor is only
It may determine that the evaporating temperature shunted all the way).In this case, it is easy to happen following scenario described:It is outdoor coil pipe used actually
There is the case where frosting, but outdoor coil pipe used temperature is higher, to can not accurately control defrosting, causes to have frost not
Change or the sordid situation of defrost.In consideration of it, suitable defrosting opportunity is selected to seem most important.
Therefore, the present invention proposes a kind of new defrosting control method.
Invention content
In order to solve the above problem in the prior art, in order to more accurately judge the opportunity into defrosting, the present invention
A kind of air conditioner defrosting control method is proposed, which includes the following steps:It is in heating condition in air conditioner
In the case of, detect the real-time current value of outdoor fan;Calculate the attenuation degree of the real-time current value of the outdoor fan;According to
The attenuation degree judges whether that air conditioner is made to enter defrosting mode.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, " real-time current of the outdoor fan is calculated
The step of attenuation degree of value " includes:Outdoor fan is obtained in real-time current value and the outdoor fan at current time when previous
The real-time current value at quarter;Calculate the ratio of the real-time current value at the current time and the real-time current value of the previous time.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, " judge whether to make according to the attenuation degree
Air conditioner enters defrosting mode " the step of include:If the reality of the real-time current value and the previous time at the current time
When current value ratio be less than the first preset value, then so that the air conditioner is entered defrosting mode;If the reality at the current time
When current value and the previous time the ratio of real-time current value be not less than the first preset value, then so that the air conditioner maintenance is worked as
Preceding heating condition, does not enter defrosting mode.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, first preset value be 0.85-0.95 it
Between arbitrary value.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, first preset value is 0.9.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, " real-time current of the outdoor fan is calculated
The step of attenuation degree of value " includes:Obtain real-time current value and selected first standard electric of the outdoor fan at current time
First ratio of flow valuve;Real-time current value and the second of selected second standard current value of the acquisition outdoor fan in previous time
Ratio;Calculate the ratio of first ratio and second ratio;Wherein, first standard current value and second mark
Quasi- current value is the current value of the outdoor fan that is measured in the state of outdoor unit non-frosting under different rotating speeds.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, the first selected standard current value is institute
Standard current value of the outdoor fan under current rotating speed is stated, the second selected standard current value is that the outdoor fan is first
Standard current value under the rotating speed at preceding moment.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, " judge whether to make according to the attenuation degree
Air conditioner enters defrosting mode " the step of include:If it is pre- that the ratio of first ratio and second ratio is less than second
If value, then make the air conditioner enter defrosting mode;If the ratio of first ratio and second ratio is not less than the
Two preset values then make the air conditioner maintain heating condition, do not enter defrosting mode.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, second preset value be 0.85-0.95 it
Between arbitrary value.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, first preset value is 0.9.
The present invention is according to the attenuation degree of the real-time current value of outdoor fan to determine whether air conditioner is made to enter defrosting mould
Formula.Since the size of current of outdoor fan can occur to change accordingly with outdoor coil pipe used frosting degree, and the reality of outdoor fan
When current value attenuation degree can accurately reflect outdoor fan size of current situation of change, therefore according to outdoor fan
The attenuation degree of real-time current value can more accurately reflect outdoor coil pipe used frosting degree, when to more accurately selection defrosting
Machine, and effectively eliminate and limitation when frosting degree is judged using outdoor coil temperature in the prior art, reduce air-conditioning
The defrosting number of device promotes user experience.
Description of the drawings
Fig. 1 is the broad flow diagram of the air conditioner defrosting control method of the present invention;
Fig. 2 is a kind of detail flowchart of embodiment of the air conditioner defrosting control method of the present invention;
Fig. 3 is the detail flowchart of another embodiment of the air conditioner defrosting control method of the present invention.
Specific implementation mode
To keep the embodiment of the present invention, technical solution and advantage more obvious, below in conjunction with attached drawing to the skill of the present invention
Art scheme is clearly and completely described, it is clear that and the embodiment described is a part of the embodiment of the present invention, rather than all
Embodiment.It will be apparent to a skilled person that these embodiments are used only for explaining the technical principle of the present invention, and
It is not intended to be limiting protection scope of the present invention.For example, although the method for the present invention is described in the application according to particular order
Each step, but these are not sequentially restrictive, under the premise of without departing from the basic principle of the present invention, this field skill
Art personnel can execute the step in a different order.
The prior art mainly judges outdoor coil pipe used frosting degree by outdoor coil temperature, but such as background technology
Described, this mode is easy to be influenced by factors such as shunting and sensor accuracies so that is sentenced using outdoor coil temperature
With certain limitation when disconnected frosting degree.Air conditioner defrosting control method proposed by the present invention is intended to eliminate using outdoor disk
Tube temperature degree judges limitation when frosting degree, and more accurately judges the opportunity for entering defrosting.
Referring to Fig.1, Fig. 1 is the broad flow diagram of the air conditioner defrosting control method of the present invention.As shown in Figure 1, of the invention
Defrosting control method include the following steps:S110, in the case of air conditioner is in heating condition, detect the reality of outdoor fan
When current value;The attenuation degree of the real-time current value of S120, calculating outdoor fan;S130, judge whether to make according to attenuation degree
Air conditioner enters defrosting mode.
As outdoor coil pipe used frosting degree is increasing, windage is caused to gradually increase, into the air quantity meeting of outdoor fan
It correspondingly reduces, when windage increases, the load of outdoor fan correspondingly increases, and the electric current of outdoor fan reduces therewith.Change speech
It, load of the outdoor fan under certain rotating speed is to determine, if the load of motor increases under same rotational speed, electric current reduces,
Then illustrate that the intake of outdoor fan reduces, outdoor coil pipe used frosting degree increases.It can be seen that the size of current of outdoor fan
Corresponding variation can occur with outdoor coil pipe used frosting degree.Therefore, using the electric current of outdoor fan with outdoor coil pipe used frosting
The variation of degree and changed rule, the frosting degree to judge outdoor coil pipe used can be eliminated effectively adopts in the prior art
Limitation when frosting degree is judged with outdoor coil temperature, to more accurately judge that air conditioner enters the opportunity of defrosting.
In the defrosting control method of above-mentioned air conditioner, the present invention is using the electric current of outdoor fan with outdoor coil pipe used frosting
Degree and the rule changed, can directly judge outdoor coil pipe used knot according to the attenuation degree of the real-time current value of outdoor fan
White degree, it is possible thereby to the proper moment that air conditioner enters defrosting is accurately judged to, so as in the base for reducing defrosting number
On plinth, the defrosting effect of air conditioner is greatly promoted.Above-mentioned steps are described in further detail below
In above-mentioned steps S110, any of means may be used to detect in the real-time current value of outdoor fan,
This is no longer described in detail.
In above-mentioned steps S120, as an example, the side of the attenuation degree of the real-time current value of outdoor fan is calculated
Formula can be:Obtain outdoor fan current time real-time current value and outdoor fan previous time real-time current value;
Then the ratio of the real-time current value at current time and the real-time current value of previous time is calculated.That is, with the ratio of the two
Value indicates the attenuation degree of the real-time current value of outdoor fan.
In above-mentioned steps S130, as an example, if the real-time current value at current time and the reality of previous time
When current value ratio be less than the first preset value, then so that air conditioner is entered defrosting mode;If the real-time current value at current time
Be not less than the first preset value with the ratio of the real-time current value of previous time, then air conditioner made to maintain current heating condition, not into
Enter defrosting mode.Wherein, the first preset value can be arbitrary value between 0.85-0.95.
In order to illustrate more clearly of the defrosting control method of the present invention, come with reference to a specific embodiment detailed
Illustrate the defrosting control method of the present invention.
It is a kind of detail flowchart of embodiment of the air conditioner defrosting control method of the present invention with reference to Fig. 2, Fig. 2.Such as Fig. 2
It is shown, in the case of air conditioner heat-production is run, the real-time current value I of step S210, detection outdoor fan is first carried outs.So
The attenuation degree of the real-time current value of S220, calculating outdoor fan is entered step afterwards:Is/Is-1.Wherein, IsWorking as outdoor fan
The real-time current value at preceding moment, Is-1It is real-time current value of the outdoor fan in previous time.Subsequently into step S230, judge
Is/Is-1Value whether be less than 0.9 (the first preset value).If Is/Is-1< 0.9 then enters step S240, air conditioner is made to run
Defrosting mode;If Is/Is-1>=0.9, then it enters step S250, air conditioner is made to maintain current heating condition.
It should be noted that the first preset value among the above is illustrated using 0.9 as example, those skilled in the art
The arbitrary value that can also be set the first preset value between 0.85-0.95, or other arbitrary rational values, these do not take off
From protection scope of the present invention.
In this embodiment, air conditioner defrosting control method further includes the steps that exiting defrosting mode.For example, continue
With reference to Fig. 2, after air conditioner enters defrosting mode, executes step S260, calculates Is/Is-1Value, and whether judge the ratio
Equal to 1.If Is/Is-1=1, illustrate that the real-time current value of outdoor fan at this time no longer decays, that is, illustrates the frost on outdoor coil pipe used
It has been be removed that, therefore, enter step S270, air conditioner exits defrosting mode.Otherwise, illustrate on outdoor coil pipe used frost not yet
It is removed totally, continues to run with defrosting mode at this time.
It will be readily appreciated by those skilled in the art that during defrosting, the current value of outdoor fan can gradually increase, i.e.,
The attenuation degree of outdoor fan continuously decreases, when outdoor fan current time real-time current value relative to the reality for first going the moment
When current value no longer decay, then illustrate that the frost on outdoor coil pipe used has been removed, and during atual detection, as long as Is/Is-1
Ratio close to 1, you can judge that the real-time current value of outdoor fan no longer decays.As an example, Is/Is-1Value be more than
When equal to the second preset value, then defrosting mode is exited.Wherein, arbitrary value of second preset value between 0.95-1.For example,
During defrosting, if the attenuation degree of the current value of outdoor fan is within 5%, you can judge the white base on outdoor coil pipe used
Originally it is eliminated, can select to exit defrosting mode at this time.Those skilled in the art can require according to actual defrosting, reasonably
Set the second preset value.
It is the detail flowchart of another embodiment of the air conditioner defrosting control method of the present invention with reference to Fig. 3, Fig. 3.Such as
Shown in Fig. 3, in the case of air conditioner heat-production is run, the real-time current value I of step S310, detection outdoor fan is first carried outs。
Subsequently into step S320, calculate A=Is/Ib1;A-1=Is-1/Ib2.Wherein, IsFor outdoor fan current time real-time electricity
Flow valuve, Ib1For selected the first standard current value (standard current value of the outdoor fan under current rotating speed);Is-1It is outdoor fan
In the real-time current value of previous time, Ib2For selected the second standard current value (outdoor fan formerly before standard electric under rotating speed
Flow valuve).It should be noted that the standard current value is the outdoor fan that is measured in the state of outdoor unit non-frosting in difference
Current value under rotating speed, these standard current values have been previously written the control program of air conditioner, as an example, are examining
It surveys before or while the real-time current value of outdoor fan, detects the rotating speed of outdoor fan, then prestored according to current rotating speed
Standard current value in select standard current value identical with current rotating speed as select the first standard current value.Similarly, root
Standard current value identical with previous rotating speed is selected as the second selected mark in the standard current value to prestore according to previous rotating speed
Quasi- current value.
Calculate A and A-1Value after, enter step S330, judge A/A-1Value whether be less than 0.9 (the second preset value),
If A/A-1< 0.9 then enters step S340, air conditioner is made to run defrosting mode;If A/A-1>=0.9, then it enters step
S350, air conditioner is made to maintain current heating condition.The second preset value in the embodiment is said using 0.9 as example at any time
Bright, those skilled in the art can also set the second preset value to the arbitrary value between 0.85-0.95, or other arbitrary conjunctions
The value of reason, these are without departure from protection scope of the present invention.
In this embodiment, air conditioner defrosting control method further includes the steps that exiting defrosting mode.For example, continue
With reference to Fig. 3, after air conditioner enters defrosting mode, executes step S360, calculates A/A-1Value, and judge the ratio whether etc.
In 1.If A/A-1=1, illustrate the value of A at this time and/A-1Value it is equal, this can be understood as the current real-time electricity of outdoor fan
Flow valuve IsEqual to the standard current value I under current rotating speedb1And the real-time current value I that outdoor fan is previouss-1Equal to first forward
Standard current value I under speedb2, in other words, illustrate that the frost on outdoor coil pipe used has been removed, therefore, enter step S270, air-conditioning
Device exits defrosting mode.Otherwise, illustrate that the frost on outdoor coil pipe used is removed totally not yet, continue to run with defrosting mode at this time.
It will be readily appreciated by those skilled in the art that during defrosting, the current value of outdoor fan can gradually increase, i.e.,
The current value of outdoor fan can become closer to standard current value, when the real-time current value of outdoor fan is gradually increased to and selected
Standard current value it is equal when, illustrate that the frost on outdoor coil pipe used has been removed, and during atual detection, allow IsAnd Ib1
Between, Is-1And Ib2Between there are certain errors.As an example, A/A-1Value can determine whether room when be approximately equal to 1
Frost on outer coil pipe has been removed, and can exit defrosting mode.
In conclusion the present invention according to the attenuation degree of the real-time current value of outdoor fan to determine whether make air conditioner into
Enter defrosting mode.Since corresponding variation can occur with outdoor coil pipe used frosting degree for the size of current of outdoor fan, and it is outdoor
The attenuation degree of the real-time current value of wind turbine can accurately reflect the situation of change of the size of current of outdoor fan, therefore basis
The attenuation degree of the real-time current value of outdoor fan can more accurately reflect outdoor coil pipe used frosting degree, to more accurately select
Defrosting opportunity is selected, and effectively eliminates and limitation when frosting degree is judged using outdoor coil temperature in the prior art,
The defrosting number of air conditioner is reduced, user experience is promoted.
So far, it has been combined preferred embodiment shown in the drawings and describes technical scheme of the present invention, still, this field
Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these specific implementation modes.Without departing from this
Under the premise of the principle of invention, those skilled in the art can make the relevant technologies feature equivalent change or replacement, these
Technical solution after change or replacement is fallen within protection scope of the present invention.
Claims (10)
1. a kind of air conditioner defrosting control method, which is characterized in that the defrosting control method includes the following steps:
In the case of air conditioner is in heating condition, the real-time current value of outdoor fan is detected;
Calculate the attenuation degree of the real-time current value of the outdoor fan;
According to the attenuation degree judge whether that air conditioner is made to enter defrosting mode.
2. air conditioner defrosting control method according to claim 1, which is characterized in that " calculate the reality of the outdoor fan
When current value attenuation degree " the step of include:
Obtain outdoor fan current time real-time current value and outdoor fan previous time real-time current value;
Calculate the ratio of the real-time current value at the current time and the real-time current value of the previous time.
3. air conditioner defrosting control method according to claim 2, which is characterized in that " judged according to the attenuation degree
Whether air conditioner is made to enter defrosting mode " the step of include:
If it is default that the ratio of the real-time current value at the current time and the real-time current value of the previous time is less than first
Value, then make the air conditioner enter defrosting mode;
If the real-time current value at the current time and the ratio of the real-time current value of the previous time are pre- not less than first
If value then makes the air conditioner maintain current heating condition, does not enter defrosting mode.
4. air conditioner defrosting control method according to claim 3, which is characterized in that first preset value is 0.85-
Arbitrary value between 0.95.
5. air conditioner defrosting control method according to claim 4, which is characterized in that first preset value is 0.9.
6. air conditioner defrosting control method according to claim 1, which is characterized in that " calculate the reality of the outdoor fan
When current value attenuation degree " the step of include:
First ratio of the acquisition outdoor fan in the real-time current value and the first selected standard current value at current time;
Second ratio of the acquisition outdoor fan in the real-time current value and the second selected standard current value of previous time;
Calculate the ratio of first ratio and second ratio;
Wherein, first standard current value and second standard current value measure in the state of outdoor unit non-frosting
Current value of the outdoor fan under different rotating speeds.
7. air conditioner defrosting control method according to claim 6, which is characterized in that the first selected normalized current
Value is standard current value of the outdoor fan under current rotating speed, and the second selected standard current value is the outdoor wind
Standard current value of the machine under the rotating speed of previous time.
8. air conditioner defrosting control method according to claim 7, which is characterized in that " judged according to the attenuation degree
Whether air conditioner is made to enter defrosting mode " the step of include:
If the ratio of first ratio and second ratio is less than the second preset value, the air conditioner is made to enter defrosting
Pattern;
If the ratio of first ratio and second ratio is not less than the second preset value, the air conditioner is made to maintain system
Thermal condition does not enter defrosting mode.
9. air conditioner defrosting control method according to claim 8, which is characterized in that second preset value is 0.85-
Arbitrary value between 0.95.
10. air conditioner defrosting control method according to claim 9, which is characterized in that second preset value is 0.9.
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CN109323373A (en) * | 2018-10-17 | 2019-02-12 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
CN110836447A (en) * | 2018-08-17 | 2020-02-25 | 青岛海尔空调器有限总公司 | Defrosting control method for air conditioner |
CN111043713A (en) * | 2019-12-31 | 2020-04-21 | Tcl空调器(中山)有限公司 | Defrosting method of air conditioner, air conditioner and storage medium |
CN111336648A (en) * | 2020-03-16 | 2020-06-26 | 宁波奥克斯电气股份有限公司 | Air conditioner defrosting control method and device, storage medium and air conditioner |
CN111692710A (en) * | 2020-06-24 | 2020-09-22 | 宁波奥克斯电气股份有限公司 | Control method for preventing freezing and defrosting and air conditioner |
CN111947349A (en) * | 2019-05-14 | 2020-11-17 | 广东万博电气有限公司 | Defrosting control method, defrosting control system and air source heat pump device |
CN111981640A (en) * | 2020-08-19 | 2020-11-24 | 宁波奥克斯电气股份有限公司 | Defrosting control method and device, air conditioner and storage medium |
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CN110836447A (en) * | 2018-08-17 | 2020-02-25 | 青岛海尔空调器有限总公司 | Defrosting control method for air conditioner |
CN110836447B (en) * | 2018-08-17 | 2021-08-31 | 重庆海尔空调器有限公司 | Defrosting control method for air conditioner |
CN109323373A (en) * | 2018-10-17 | 2019-02-12 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
CN111947349A (en) * | 2019-05-14 | 2020-11-17 | 广东万博电气有限公司 | Defrosting control method, defrosting control system and air source heat pump device |
CN111947349B (en) * | 2019-05-14 | 2023-05-12 | 广东万和电气有限公司 | Defrosting control method, defrosting control system and air source heat pump device |
CN111043713A (en) * | 2019-12-31 | 2020-04-21 | Tcl空调器(中山)有限公司 | Defrosting method of air conditioner, air conditioner and storage medium |
CN111336648A (en) * | 2020-03-16 | 2020-06-26 | 宁波奥克斯电气股份有限公司 | Air conditioner defrosting control method and device, storage medium and air conditioner |
CN111692710A (en) * | 2020-06-24 | 2020-09-22 | 宁波奥克斯电气股份有限公司 | Control method for preventing freezing and defrosting and air conditioner |
CN111692710B (en) * | 2020-06-24 | 2021-09-21 | 宁波奥克斯电气股份有限公司 | Control method for preventing freezing and defrosting and air conditioner |
CN111981640A (en) * | 2020-08-19 | 2020-11-24 | 宁波奥克斯电气股份有限公司 | Defrosting control method and device, air conditioner and storage medium |
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