CN108444132A - Air conditioner defrosting control method - Google Patents
Air conditioner defrosting control method Download PDFInfo
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- CN108444132A CN108444132A CN201810152005.4A CN201810152005A CN108444132A CN 108444132 A CN108444132 A CN 108444132A CN 201810152005 A CN201810152005 A CN 201810152005A CN 108444132 A CN108444132 A CN 108444132A
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- air conditioner
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/031—Sensor arrangements
- F25B2313/0315—Temperature sensors near the outdoor heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/15—Power, e.g. by voltage or current
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (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, defrosting control method proposed by the present invention include：In the case of air conditioner is in heating condition, the real-time current value of outdoor fan and outdoor coil pipe used real-time temperature values are detected；Compare the real-time current value of outdoor fan and selected standard current value, and obtains the first comparison result；More outdoor coil pipe used real-time temperature values and selected normal temperature value, and obtain the second comparison result；With the second comparison result judge whether that air conditioner is made to enter defrosting mode according to the first comparison result；The present invention can more accurately reflect outdoor coil pipe used frosting degree, to more accurately select defrosting opportunity, and 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 and outdoor coil pipe used real-time temperature values；Compare the real-time electricity of outdoor fan
Flow valuve and selected standard current value, and obtain the first comparison result；More outdoor coil pipe used real-time temperature values and selected mark
Quasi- temperature value, and obtain the second comparison result；Judge whether to make according to first comparison result and second comparison result
Air conditioner enters defrosting mode；Wherein, the standard current value is the outdoor fan measured in the state of outdoor unit non-frosting
Current value under different rotating speeds；The normal temperature value is the outdoor fan that is measured in the state of outdoor unit non-frosting not
With the outdoor coil pipe used temperature value under rotating speed.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, the selected standard current value is the room
Standard current value of the outer wind turbine under current rotating speed；The selected normal temperature value is the outdoor fan under current rotating speed
Outdoor coil pipe used normal temperature value.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, first comparison result is：The outdoor
The ratio of the real-time current value of wind turbine and selected standard current value.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, second comparison result is：Selected mark
The difference of quasi- temperature value and the outdoor coil pipe used real-time temperature values.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, " according to first comparison result and described
Second comparison result judges whether that air conditioner is made to enter defrosting mode " the step of include：When first comparison result with it is described
When second comparison result is satisfied by setting condition, increase the throttle valve opening of air conditioner, after setting time, if described
First comparison result still meets setting condition with second comparison result, then enters defrosting mode；Otherwise, make the air conditioner
Current heating condition is maintained, defrosting mode is not entered；Wherein, the setting condition is：The real-time current value of the outdoor fan
Be less than the first preset value with the ratio of selected standard current value, meanwhile, selected normal temperature value with it is described outdoor coil pipe used
The difference of real-time temperature values is more than the second preset value.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, first preset value be 0.85-0.95 it
Between arbitrary value；And/or second preset value is the arbitrary value between 4-6 degrees Celsius；And/or the setting time
For the random time between 4-6 minutes；And/or the throttle valve opening for increasing air conditioner is specially：Throttle valve is opened
Degree increases the step number of setting.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, the defrosting control method, which further includes judgement, is
No the step of exiting defrosting mode, the step include：After the air conditioner enters defrosting mode, compare the reality of outdoor fan
When current value and selected standard current value；Judged whether that air conditioner is made to exit defrosting mode according to comparison result.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, " the air conditioner enter defrosting mode it
Afterwards, compare the real-time current value of outdoor fan and selected standard current value " the step of include：Calculate working as the outdoor fan
The ratio of preceding current value and selected standard current value.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, " judged whether to make air-conditioning according to comparison result
Device exits defrosting mode " the step of include：If the ratio of the real-time current value of the outdoor fan and selected standard current value
Value is more than or equal to third preset value, then exits defrosting mode；Otherwise, the air conditioner is made to maintain defrosting operating condition.
In the preferred embodiment of above-mentioned air conditioner defrosting control method, the third preset value is between 0.95-1
Arbitrary value.
In the inventive solutions, while according to the electric current of outdoor coil pipe used real time temperature and outdoor fan with room
The variation of the frosting degree of outer coil pipe and changed rule judge outdoor coil pipe used frosting degree.Due to outdoor fan
Corresponding variation can occur with outdoor coil pipe used frosting degree for size of current, and selected standard current value is not tied in outdoor unit
The current value of the outdoor fan measured in the state of frost, by comparing real-time current value and the selected normalized current of outdoor fan
Value can accurately reflect the situation of change of the size of current of outdoor fan, while further according to outdoor coil pipe used real-time temperature values phase
Outdoor coil pipe used frosting degree can more accurately be reflected for the variation of normal temperature value, to when more accurately selection defrosts
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 the detail flowchart 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 and outdoor coil pipe used real-time temperature values；S120, the real-time current value for comparing outdoor fan and selected normalized current
Value, and obtain the first comparison result；S130, more outdoor coil pipe used real-time temperature values and selected normal temperature value, and obtain
Second comparison result；S140, with the second comparison result judge whether that air conditioner is made to enter defrosting mode according to the first comparison result.
Wherein, standard 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；Mark
Quasi- temperature value is the outdoor coil pipe used temperature value of the outdoor fan that is measured in the state of outdoor unit non-frosting under different rotating speeds.
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.And outdoor coil pipe used real time temperature also can be with outdoor coil pipe used knot
Corresponding variation occurs for white degree, and therefore, the present invention is simultaneously according to the electric current of outdoor coil pipe used real time temperature and outdoor fan
Changed rule judges outdoor coil pipe used frosting degree with the variation of outdoor coil pipe used frosting degree, can be effectively
Elimination individually judges limitation when frosting degree using outdoor coil temperature in the prior art, empty to more accurately judge
Device is adjusted to enter the opportunity of defrosting.
In the defrosting control method of above-mentioned air conditioner, while according to outdoor coil pipe used real-time temperature values and outdoor fan
Real-time current value judges outdoor coil pipe used frosting degree, it is possible thereby to accurately judge air conditioner enter defrosting it is suitable when
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.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, outdoor
The real-time temperature values of coil pipe can be obtained by outdoor temperature sensor, be no longer described in detail herein.
In above-mentioned steps S120, selected standard current value is standard current value of the outdoor fan under current rotating speed.
Specifically, since standard current value is the electric current of the outdoor fan that is measured in the state of outdoor unit non-frosting under different rotating speeds
Value, these standard current values have been previously written the control program of air conditioner, therefore in the real-time electricity for detecting outdoor fan
After flow valuve, directly the real-time current value detected can be compared with the standard current value under current rotating speed.It needs to illustrate
, selecting a kind of mode of standard current value can be：Before or while detecting the real-time current value of outdoor fan, inspection
The rotating speed of outdoor fan is surveyed, then selectes standard identical with current rotating speed in the standard current value to prestore according to current rotating speed
Current value.In addition to this standard current value can also be selected according to other reasonable manners.In the present embodiment, first compares
As a result can be：Calculate the ratio of the real-time current value and selected standard current value of outdoor fan.That is, with the two
Ratio judges the variation of the real-time current value of outdoor fan.
In above-mentioned steps S130, selected normal temperature value is outdoor coil pipe used mark of the outdoor fan under current rotating speed
Quasi- temperature value.Since normal temperature value is the room of the outdoor fan that is measured in the state of outdoor unit non-frosting under different rotating speeds
The temperature value of outer coil pipe, these normal temperature values have been previously written the control program of air conditioner, therefore are detecting outdoor
After the real-time temperature values of wind turbine, directly the normal temperature value under the real-time temperature values detected and current rotating speed can be compared
Compared with.It should be noted that a kind of mode of selected normal temperature value can be：By detecting the rotating speed of outdoor fan, then root
Normal temperature value identical with current rotating speed is selected in the normal temperature value to prestore according to current rotating speed.It in addition to this can also be by
Standard current value is selected according to other reasonable manners.In the present embodiment, the second comparison result can be：Selected standard temperature
The difference of angle value and outdoor coil pipe used real-time temperature values.That is, judging outdoor coil pipe used real-time temperature with the difference of the two
The variation of angle value.
In above-mentioned steps S140, judge whether with the second comparison result makes air conditioner enter according to the first comparison result removes
The specific steps of white pattern include：When the first comparison result and the second comparison result are satisfied by setting condition, increase air conditioner
Throttle valve opening (throttle valve opening is increased to the step number of setting, such as 50 steps), using setting time (as an example,
The setting time can be the random time between 4-6 minutes) after, if the first comparison result still meets with the second comparison result
It imposes a condition, then enters defrosting mode；Otherwise, so that air conditioner is maintained current heating condition, do not enter defrosting mode；Wherein, if
Fixed condition is：The ratio of the real-time current value of outdoor fan and selected standard current value be less than the first preset value (as an example,
First preset value can be the arbitrary value between 0.85-0.95), meanwhile, selected normal temperature value and outdoor coil pipe used reality
When temperature value difference be more than the second preset value (as an example, the arbitrary value of second preset value between 4-6).
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.
With reference to Fig. 2, Fig. 2 is the detail flowchart as the air conditioner defrosting control method of the exemplary present invention.Such as Fig. 2 institutes
Show, in the case of air conditioner is in heating condition, the real-time current value I of step S210, detection outdoor fan is first carried outsWith
Outdoor coil pipe used real-time temperature values Ts, subsequently into step S220, judge Is/IbValue whether be less than 0.9 (the first preset value),
Judge T simultaneouslyb-TsValue whether be more than 5 (the second preset values), wherein IbFor selected standard current value, i.e. outdoor fan exists
Standard current value under current rotating speed；TbFor selected normal temperature value, i.e. normal temperature of the outdoor fan under current rotating speed
Value.If Is/Ib＜ 0.9, while Tb-Ts＞ 5 then enters step S230, the throttle valve opening of air conditioner is increased to 50 steps, fortune
Row after five minutes, enters step S240, judges I agains/IbValue whether be less than 0.9 (the first preset value), while judging Tb-Ts
Value whether be more than 5 (the second preset values), if still meeting Is/Ib＜ 0.9, while Tb-Ts＞ 5, then enter step S250,
Air conditioner is set to run defrosting mode；Otherwise, it enters step S260, 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, the second preset value be with
5 illustrate as examples, and setting time is illustrated using five minutes as example, the increased setting step number of throttle valve opening with
50 steps are illustrated as example.Those skilled in the art can also set the first preset value to times between 0.85-0.95
Meaning value, sets the second preset value to the arbitrary value between 4-6, sets setting time to the random time between 4-6 minutes,
And the throttle valve opening of air conditioner is increased into other suitable step numbers.In addition to this, those skilled in the art can also be arranged
Other rational preset values and time, these are without departure from protection scope of the present invention.
The air conditioner defrosting control method of the present invention further includes the steps that exiting defrosting mode.For example, with continued reference to
Fig. 2 executes step S270, calculates I after air conditioner enters defrosting modes/IbValue, and judge the ratio whether be equal to 1.
If Is/Ib=1, illustrate that the current value of outdoor fan is equal with selected standard current value at this time, that is, illustrates on outdoor coil pipe used
Frost has been removed, and therefore, enters step S280, air conditioner exits defrosting mode.Otherwise, illustrate that the frost on outdoor coil pipe used does not have also
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, when
When the real-time current value of outdoor fan gradually increases to equal with the standard current value selected, illustrate on outdoor coil pipe used frost
It is removed, and during atual detection, allow IsAnd IbBetween there are certain errors.As an example, outdoor fan
Real-time current value IsWith selected standard current value IbRatio be more than or equal to third preset value when, then exit defrosting mode.Its
In, arbitrary value of the third preset value between 0.95-1.For example, during defrosting, if the real-time electricity of outdoor fan
Flow valuve, which gradually increases to, meets Is/Ib>=0.95, you can judge that the frost on outdoor coil pipe used is eliminated substantially, can select to move back at this time
Go out defrosting mode.Those skilled in the art can require according to actual defrosting, reasonably set the second preset value.
In conclusion the present invention is simultaneously according to the electric current of outdoor coil pipe used real time temperature and outdoor fan with outdoor coil pipe used
Frosting degree variation and changed rule judges outdoor coil pipe used frosting degree.Since the electric current of outdoor fan is big
It is small that corresponding variation can occur with outdoor coil pipe used frosting degree, and selected standard current value is the shape in the non-frosting of outdoor unit
The current value of the outdoor fan measured under state, can be with by comparing real-time current value and the selected standard current value of outdoor fan
The accurately situation of change of the size of current of reflection outdoor fan, while further according to outdoor coil pipe used real-time temperature values relative to mark
The variation of quasi- temperature value can more accurately reflect outdoor coil pipe used frosting degree, to more accurately select defrosting opportunity, and
It effectively eliminates and limitation when frosting degree is judged using outdoor coil temperature in the prior art, reduce the defrosting of air conditioner
Number promotes user experience.
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 and outdoor coil pipe used real time temperature are detected
Value；
Compare the real-time current value of outdoor fan and selected standard current value, and obtains the first comparison result；
More outdoor coil pipe used real-time temperature values and selected normal temperature value, and obtain the second comparison result；
According to first comparison result and second comparison result judge whether that air conditioner is made to enter defrosting mode；
Wherein, the standard current value is the electricity of the outdoor fan that is measured in the state of outdoor unit non-frosting under different rotating speeds
Flow valuve；The normal temperature value is the outdoor disk of the outdoor fan that is measured in the state of outdoor unit non-frosting under different rotating speeds
The temperature value of pipe.
2. air conditioner defrosting control method according to claim 1, which is characterized in that the selected standard current value is
Standard current value of the outdoor fan under current rotating speed；
The selected normal temperature value is outdoor coil pipe used normal temperature value of the outdoor fan under current rotating speed.
3. air conditioner defrosting control method according to claim 2, which is characterized in that first comparison result is：Institute
State the ratio of the real-time current value and selected standard current value of outdoor fan.
4. air conditioner defrosting control method according to claim 3, which is characterized in that second comparison result is：Choosing
The difference of fixed normal temperature value and the outdoor coil pipe used real-time temperature values.
5. air conditioner defrosting control method according to claim 4, which is characterized in that " according to first comparison result
With second comparison result judge whether that air conditioner is made to enter defrosting mode " the step of include：
When first comparison result and second comparison result are satisfied by setting condition, the throttle valve for increasing air conditioner is opened
Degree, after setting time, if first comparison result still meets setting condition with second comparison result, into
Enter defrosting mode；
Otherwise, so that the air conditioner is maintained current heating condition, do not enter defrosting mode；
Wherein, the setting condition is：The real-time current value of the outdoor fan and the ratio of selected standard current value are less than
First preset value, meanwhile, the difference of selected normal temperature value and the outdoor coil pipe used real-time temperature values is more than second and presets
Value.
6. air conditioner defrosting control method according to claim 5, which is characterized in that first preset value is 0.85-
Arbitrary value between 0.95；And/or
Second preset value is the arbitrary value between 4-6 degrees Celsius；And/or
The setting time is the random time between 4-6 minutes；And/or
It is described increase air conditioner throttle valve opening be specially：By the step number of throttle valve opening increase setting.
7. air conditioner defrosting control method according to any one of claim 1 to 6, which is characterized in that the defrosting control
Method processed further includes the steps that judging whether to exit defrosting mode, which includes：
After the air conditioner enters defrosting mode, compare the real-time current value of outdoor fan and selected standard current value；
Judged whether that air conditioner is made to exit defrosting mode according to comparison result.
8. air conditioner defrosting control method according to claim 7, which is characterized in that " enter defrosting in the air conditioner
After pattern, compare the real-time current value of outdoor fan and selected standard current value " the step of include：
Calculate the ratio of the present current value and selected standard current value of the outdoor fan.
9. air conditioner defrosting control method according to claim 8, which is characterized in that " judged whether according to comparison result
So that air conditioner is exited defrosting mode " the step of include：
If the real-time current value of the outdoor fan and the ratio of selected standard current value are more than or equal to third preset value,
Exit defrosting mode；Otherwise, the air conditioner is made to maintain defrosting operating condition.
10. air conditioner defrosting control method according to claim 9, which is characterized in that the third preset value is 0.95-
Arbitrary value between 1.
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| CN201810152005.4A CN108444132A (en) | 2018-02-14 | 2018-02-14 | Air conditioner defrosting control method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110057029A (en) * | 2019-04-25 | 2019-07-26 | 宁波奥克斯电气股份有限公司 | A kind of air-conditioner defrosting control method, device and air conditioner |
| CN111425990A (en) * | 2020-03-04 | 2020-07-17 | 青岛海尔空调电子有限公司 | Defrosting control method of multi-split air conditioning system |
| CN112032941A (en) * | 2020-08-25 | 2020-12-04 | 海信（山东）空调有限公司 | Control method of air conditioner |
| CN112413817A (en) * | 2019-08-23 | 2021-02-26 | 青岛海尔空调器有限总公司 | Air conditioner heating control method and device, air conditioner and storage medium |
| CN113124544A (en) * | 2021-04-20 | 2021-07-16 | 青岛海尔空调电子有限公司 | Air conditioning unit and defrosting control method thereof |
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