CN109539493A - Air-conditioner outdoor unit control method, device and air conditioner - Google Patents
Air-conditioner outdoor unit control method, device and air conditioner Download PDFInfo
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- CN109539493A CN109539493A CN201811397759.2A CN201811397759A CN109539493A CN 109539493 A CN109539493 A CN 109539493A CN 201811397759 A CN201811397759 A CN 201811397759A CN 109539493 A CN109539493 A CN 109539493A
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- medium temperature
- air
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- fan
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Classifications
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The present invention provides a kind of air-conditioner outdoor unit control method, device and air conditioners, wherein the first medium temperature of condenser outside room when the air-conditioner outdoor unit control method comprised determining that for the first moment；The second medium temperature of condenser outside room when determining for the second moment；And the operation according to outdoor the first medium temperature of condenser and the second medium temperature control air-conditioner outdoor unit.The air condition of that present invention outdoor unit control method, device and air conditioner are efficiently solved when outdoor unit heat dissipation is bad, and compressor overload protection occurs the problem of frequent shutdown during rising to target frequency, are improved comfort, are improved user experience.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of air-conditioner outdoor unit control method, device and air conditioner.
Background technique
Currently, as construction pattern is more and more crowded, it is supplied to the reserved installation space of air-conditioner outdoor unit also increasingly
It is small, and part building installs grid in the installation space of outdoor unit, causes outdoor unit radiating condition more and more severe, with room
The operation of outer machine, the temperature in the installation space of outdoor unit also can be higher and higher.When air conditioner refrigerating operaton, outdoor unit operation
7 DEG C higher than actual ambient temperature of environment or more, and transducer air conditioning running frequency be according to outdoor unit heat dissipation it is unobstructed when formulate,
Under such rugged environment, compressor will appear overload protection and frequent shutdown during rising to target frequency, seriously
Influence the comfort of user.
Summary of the invention
In view of this, the present invention is directed to propose a kind of air-conditioner outdoor unit control method, device and air conditioner, to solve room
When the heat dissipation of outer machine is bad, compressor occur overload protection during rising to target frequency and the problem of frequent shutdown, thus
Guarantee transducer air conditioning operation stability, promotes the comfort of user.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of air-conditioner outdoor unit control method, comprising:
The first medium temperature of condenser outside room when determining for the first moment；
The second medium temperature of condenser outside room when determining for the second moment；And
According to the operation of outdoor the first medium temperature of condenser and the second medium temperature control air-conditioner outdoor unit.
Further, described that air-conditioner outdoor unit is controlled according to outdoor the first medium temperature of condenser and the second medium temperature
Operation the step of, comprising:
Calculate the absolute value of the difference of the first medium temperature and the second medium temperature；
Rotation speed of fan outside the air conditioner is corrected according to the absolute value of the first medium temperature and the difference of the second medium temperature
With compressor target frequency；And
According to the operation of rotation speed of fan outside revised air conditioner and compressor target frequency control air-conditioner outdoor unit.
Further, described that the air-conditioning is corrected according to the absolute value of the first medium temperature and the difference of the second medium temperature
If it is exhausted with the difference of the second medium temperature that the step of outer rotation speed of fan of device and compressor target frequency includes: the first medium temperature
One threshold value is greater than to value, then increases the outer rotation speed of fan of air conditioner, reduces compressor target frequency.
It further, will be empty if the absolute value of the difference of the first medium temperature and the second medium temperature is greater than a threshold value
Adjust the outer rotation speed of fan of device by current outer rotation speed of fan nCurrentlyIncrease to nCurrently+ Δ n, by compressor target frequency by current compressor mesh
Mark frequency fCurrentlyIt is reduced to fCurrently-Δf；Wherein, Δ n/nCurrentlyBetween 20%~30%, Δ f/fCurrentlyBetween 20%~30% it
Between.The time interval at second moment and first moment is 100s~150s, and the threshold value is greater than 8 DEG C.
A kind of air-conditioner outdoor unit control device, comprising:
First determining module, the first medium temperature of condenser outside room when for determining for the first moment；
Second determining module, the second medium temperature of condenser outside room when for determining for the second moment；And
Control module is connect, according to the first medium temperature and second with first determining module and the second determining module
The operation of medium temperature control air-conditioner outdoor unit.
Further, the control module includes:
Computing unit, the absolute value of the difference for calculating the first medium temperature and the second medium temperature；
Amending unit is connect with the computing unit, for the difference according to the first medium temperature and the second medium temperature
Absolute value correct the outer rotation speed of fan of the air conditioner and compressor target frequency；And
Control unit is connect with the amending unit, for according to rotation speed of fan and compressor outside revised air conditioner
The operation of target frequency control air-conditioner outdoor unit.
Further, the amending unit is used for big in the absolute value of the first medium temperature and the difference of the second medium temperature
When a threshold value, increases the outer rotation speed of fan of air conditioner, reduce compressor target frequency.
Further, the amending unit is used for big in the absolute value of the first medium temperature and the difference of the second medium temperature
When a threshold value, by rotation speed of fan outside air conditioner by current outer rotation speed of fan nCurrentlyIncrease to nCurrently+ Δ n, by compressor target frequency
Rate is by current compressor target frequency fCurrentlyIt is reduced to fCurrently-Δf；
Wherein, Δ n/nCurrentlyBetween 20%~30%, Δ f/fCurrentlyBetween 20%~30%, second moment
Time interval with first moment is 100s~150s, and the threshold value is greater than 8 DEG C.
A kind of air conditioner, including the control device.
Compared with the existing technology, air-conditioner outdoor unit control method, device and air conditioner of the present invention have following
Advantage:
(1) existing transducer air conditioning running frequency be according to outdoor unit heat dissipation it is unobstructed when formulate, in contrast, this hair
It is bright to be controlled according to the second medium temperature of condenser outside room when the first medium temperature of condenser outside room when the first moment and the second moment
The operation of air-conditioner outdoor unit has fully considered the radiating condition of outdoor unit installation space, avoids and pushes in rugged environment
The case where contracting machine will appear overload protection and frequent shutdown during rising to target frequency, it ensure that the normal fortune of air conditioner
Row, improves the comfort of user.
(2) present invention to radiate it is bad is prejudged, it is exhausted when the first medium temperature and the difference of the second medium temperature
One threshold value is greater than to value, meets the undesirable Rule of judgment of outdoor unit heat dissipation, at this time by reducing target frequency, increases outer blower and turns
Speed, can be in the case where outdoor dissipating-heat environment be poor, it is ensured that air conditioner can keep stable operation, and interior has lasting cooling capacity defeated
Out, air conditioner is not in frequent startup-shutdown.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the air condition of that present invention outdoor unit control method flow chart.
Fig. 2 is another flow chart of the air condition of that present invention outdoor unit control method.
Fig. 3 is the another flow chart of the air condition of that present invention outdoor unit control method.
Fig. 4 is the air condition of that present invention outdoor unit controling device structure diagram.
Fig. 5 is the air condition of that present invention outdoor unit control module structural schematic diagram.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
Since air-conditioner outdoor unit is mounted in confined space, when air conditioner booting runs refrigeration mode, condenser heat rejection,
Environment temperature quickly increases, and outdoor condenser medium temperature detects hysteresis quality, and compressor frequency can rise to always target frequency
There is situations such as system pressure is excessively high in rate.The present invention proposes a kind of air-conditioner outdoor unit control method, device and air conditioner, leads to
It crosses and outdoor unit dissipating-heat environment is prejudged, after meeting heat dissipation bad condition, reduce target frequency, it is defeated to reduce compressor energy
Out, increase outer rotation speed of fan, enhanced heat transfer effect, it is ensured that air conditioner safe and reliable operation.
Fig. 1 is the air condition of that present invention outdoor unit control method flow chart.As shown in Figure 1, the air-conditioner outdoor unit control
Method the following steps are included:
S1, the first medium temperature of condenser outside room when determining for the first moment；
S2, the second medium temperature of condenser outside room when determining for the second moment；And
S3, according to the operation of outdoor the first medium temperature of condenser and the second medium temperature control air-conditioner outdoor unit.
Existing transducer air conditioning running frequency be according to outdoor unit heat dissipation it is unobstructed when formulate, in contrast, the present invention
It is empty according to the second medium temperature of condenser control outside room when the first medium temperature of condenser outside room when the first moment and the second moment
The operation for adjusting device outdoor unit, has fully considered the radiating condition of outdoor unit installation space, has avoided and compress under rugged environment
The case where machine will appear overload protection and frequent shutdown during rising to target frequency, it ensure that the normal fortune of air conditioner
Row, improves the comfort of user.
Further, the step of the operation according to the first medium temperature and the second medium temperature control air-conditioner outdoor unit
Suddenly include:
Calculate the absolute value of the difference of the first medium temperature and the second medium temperature；
Rotation speed of fan outside the air conditioner is corrected according to the absolute value of the first medium temperature and the difference of the second medium temperature
With compressor target frequency；And
According to the operation of rotation speed of fan outside revised air conditioner and compressor target frequency control air-conditioner outdoor unit.
Further, described that the sky is corrected according to the absolute value of the first medium temperature and the difference of the second medium temperature
If the step of adjusting the outer rotation speed of fan of device and compressor target frequency includes: the difference of the first medium temperature Yu the second medium temperature
Absolute value is greater than a threshold value, then increases the outer rotation speed of fan of air conditioner, reduce compressor target frequency.
When the absolute value of the first medium temperature and the difference of the second medium temperature is greater than a threshold value, by reducing target frequency
Rate increases outer rotation speed of fan, can be in the case where outdoor dissipating-heat environment is poor, it is ensured that air conditioner can keep stable operation, room
Inside there is lasting cooling capacity to export, air conditioner is not in frequent startup-shutdown.
Wherein, first moment and the second moment are latter two first moment, between the second moment and the time at the first moment
Every preferably 100s~150s, the threshold value is preferably greater than 8 DEG C；Due to radiating under obstructed environment in outdoor unit, through 100s~
Compressor frequency rises to the corresponding high value of external environment after the time interval of 150s, at this time according to corresponding to the time interval
The outdoor condenser medium temperature at former and later two moment controls the operation of air-conditioner outdoor unit, is conducive to air conditioner
Outer rotation speed of fan and compressor target frequency are effectively corrected, to improve the accurate of air-conditioner outdoor unit operation control
Property.
Preferably, if the absolute value of the difference of the first medium temperature and the second medium temperature is greater than a threshold value, by air-conditioning
The outer rotation speed of fan of device is by current outer rotation speed of fan nCurrentlyIncrease to nCurrently+ Δ n, by compressor target frequency by current compressor target
Frequency fCurrentlyIt is reduced to fCurrently-Δf.Wherein, Δ n/nCurrentlyBetween 20%~30%, Δ f/fCurrentlyBetween 20%~30% it
Between, it is possible thereby to guarantee steady, the safe operation of the outer blower of air conditioner and compressor.
In one embodiment, as shown in Fig. 2, the air-conditioner outdoor unit control method specifically includes:
Air conditioner refrigeration booting；
Temperature detection: detection booting moment outdoor condenser medium temperature t1；After air conditioner is switched on 120s, detection is at this time
(under dissipating-heat environment harsh conditions, 120s compressor frequency rises to the corresponding highest of external environment to outdoor condenser medium temperature t2
Value),
Threshold decision and operation control: if 10 DEG C of t2-t1 >, after showing that air conditioner is opened, outdoor heat exchange effect is poor, ring
Temperature rapid increase in border, and condenser medium temperature is caused to rise, then the outer rotation speed of fan of amendment air conditioner and compressor are transported accordingly
Line frequency.
Specifically, mainly increasing the outer rotation speed of fan of air conditioner, enhanced heat exchange in terms of outer air-blower control；In frequency control
System aspect, mainly reduction compressor target frequency, specially reduce by 30% on the basis of existing target frequency；
Later, outdoor condenser medium temperature situation of change is continued to test, after 120s, detects condenser medium temperature
T3 continues to increase the outer rotation speed of fan of air conditioner, compressor target frequency is reduced, until being reduced to minimal pressure such as 10 DEG C of t3-t2 >
Contracting machine target frequency.
That is, the present invention is not limited in once correcting, as shown in figure 3, returning to temperature after preceding primary amendment
Detecting step detects former and later two moment outdoor condenser medium temperatures, calculates former and later two moment outdoor condensers later
The absolute value of the difference of medium temperature | Δ t |, and judge | Δ T | whether it is greater than a threshold value tThreshold valueIf | Δ t | > tThreshold value, then carry out
It corrects next time, continues to increase the outer rotation speed of fan of air conditioner, compressor target frequency is reduced, until compressor target frequency reduces
To lowest compression machine target frequency.
Exit criteria: it shuts down and exits.
Fig. 4 is the air condition of that present invention outdoor unit controling device structure diagram.As shown in figure 4, the air-conditioner outdoor unit
Control device includes:
First determining module, the first medium temperature of condenser outside room when for determining for the first moment；
Second determining module, the second medium temperature of condenser outside room when for determining for the second moment；And
Control module is connect, according to the first medium temperature and second with first determining module and the second determining module
The operation of medium temperature control air-conditioner outdoor unit.
Fig. 5 is the air condition of that present invention outdoor unit control module structural schematic diagram.As shown in figure 5, the control module includes:
Computing unit, the absolute value of the difference for calculating the first medium temperature and the second medium temperature；
Amending unit is connect with the computing unit, for the difference according to the first medium temperature and the second medium temperature
Absolute value correct the outer rotation speed of fan of the air conditioner and compressor target frequency；
Control unit is connect with the amending unit, for according to rotation speed of fan and compressor outside revised air conditioner
The operation of target frequency control air-conditioner outdoor unit.
Specifically, the amending unit is used to be greater than in the absolute value of the first medium temperature and the difference of the second medium temperature
When one threshold value, increases the outer rotation speed of fan of air conditioner, reduce compressor target frequency.More specifically, the amending unit is used for
When the absolute value of the first medium temperature and the difference of the second medium temperature is greater than a threshold value, by rotation speed of fan outside air conditioner by working as
Preceding outer rotation speed of fan nCurrentlyIncrease to nCurrently+ Δ n, by compressor target frequency by current compressor target frequency fCurrentlyIt is reduced to
fCurrently-Δf；
Wherein, Δ n/nCurrentlyBetween 20%~30%, Δ f/fCurrentlyBetween 20%~30%, second moment
Time interval with first moment is 100s~150s, and the threshold value is greater than 8 DEG C.
In addition, the present invention also provides a kind of air conditioner, including the control device.
To sum up, the air condition of that present invention outdoor unit control method, device and air conditioner, can improve condenser and environment exchanges heat
Deteriorate, it is ensured that air conditioner can keep stable operation, avoid the frequent startup-shutdown of transducer air conditioning to the shadow of compressor and machine system
It rings.
So far, attached drawing is had been combined to the present invention have been described in detail.According to above description, those skilled in the art are answered
When having clear understanding to the air condition of that present invention outdoor unit control method, device and air conditioner.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of air-conditioner outdoor unit control method characterized by comprising
The first medium temperature of condenser outside room when determining for the first moment；
The second medium temperature of condenser outside room when determining for the second moment；And
According to the operation of outdoor the first medium temperature of condenser and the second medium temperature control air-conditioner outdoor unit.
2. control method according to claim 1, which is characterized in that
The described the step of operation of air-conditioner outdoor unit is controlled according to the first medium temperature and the second medium temperature, comprising:
Calculate the absolute value of the difference of the first medium temperature and the second medium temperature；
Rotation speed of fan and pressure outside the air conditioner are corrected according to the absolute value of the first medium temperature and the difference of the second medium temperature
Contracting machine target frequency；And
According to the operation of rotation speed of fan outside revised air conditioner and compressor target frequency control air-conditioner outdoor unit.
3. control method according to claim 2, which is characterized in that described according to temperature among the first medium temperature and second
If it includes: among first that the absolute value of the difference of degree, which corrects the step of outer rotation speed of fan of the air conditioner and compressor target frequency,
The absolute value of the difference of temperature and the second medium temperature is greater than a threshold value, then increases the outer rotation speed of fan of air conditioner, reduce compressor
Target frequency.
4. control method according to claim 3, which is characterized in that if the difference of the first medium temperature and the second medium temperature
The absolute value of value is greater than a threshold value, then by rotation speed of fan outside air conditioner by current outer rotation speed of fan nCurrentlyIncrease to nCurrently+ Δ n, will
Compressor target frequency is by current compressor target frequency fCurrentlyIt is reduced to fCurrently-Δf；Wherein, Δ n/nCurrentlyBetween 20%~30%
Between, Δ f/fCurrentlyBetween 20%~30%.
5. control method according to claim 4, which is characterized in that the time at second moment and first moment
Between be divided into 100s~150s, the threshold value is greater than 8 DEG C.
6. a kind of air-conditioner outdoor unit control device characterized by comprising
First determining module, the first medium temperature of condenser outside room when for determining for the first moment；
Second determining module, the second medium temperature of condenser outside room when for determining for the second moment；And
Control module is connect, among the first medium temperature and second with first determining module and the second determining module
The operation of temperature control air-conditioner outdoor unit.
7. control device according to claim 6, which is characterized in that the control module includes:
Computing unit, the absolute value of the difference for calculating the first medium temperature and the second medium temperature；
Amending unit is connect with the computing unit, for according to the exhausted of the first medium temperature and the difference of the second medium temperature
Rotation speed of fan and compressor target frequency outside the air conditioner are corrected to value；And
Control unit is connect with the amending unit, for according to rotation speed of fan outside revised air conditioner and compressor target
The operation of frequency control air-conditioner outdoor unit.
8. control device according to claim 7, which is characterized in that the amending unit be used for the first medium temperature with
When the absolute value of the difference of second medium temperature is greater than a threshold value, increases the outer rotation speed of fan of air conditioner, reduce compressor target frequency
Rate.
9. control device according to claim 8, which is characterized in that
The amending unit is used for when the absolute value of the first medium temperature and the difference of the second medium temperature is greater than a threshold value, will
The outer rotation speed of fan of air conditioner is by current outer rotation speed of fan nCurrentlyIncrease to nCurrently+ Δ n, by compressor target frequency by current compressor
Target frequency fCurrentlyIt is reduced to fCurrently-Δf；
Wherein, Δ n/nCurrentlyBetween 20%~30%, Δ f/fCurrentlyBetween 20%~30%, second moment and institute
The time interval for stating for the first moment is 100s~150s, and the threshold value is greater than 8 DEG C.
10. a kind of air conditioner, which is characterized in that including the control device as described in any one of claim 6-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811397759.2A CN109539493A (en) | 2018-11-21 | 2018-11-21 | Air-conditioner outdoor unit control method, device and air conditioner |
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| CN201811397759.2A CN109539493A (en) | 2018-11-21 | 2018-11-21 | Air-conditioner outdoor unit control method, device and air conditioner |
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Cited By (5)
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| CN111023393A (en) * | 2019-11-15 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Control method and system of outdoor fan and air conditioner |
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| CN113108426A (en) * | 2021-04-07 | 2021-07-13 | 广东美的暖通设备有限公司 | Outdoor unit control method and device of air conditioner and air conditioner |
| CN114353257A (en) * | 2022-01-26 | 2022-04-15 | 安徽奥克斯智能电气有限公司 | Overshoot prevention protection method and device and air conditioner |
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| CN114353257A (en) * | 2022-01-26 | 2022-04-15 | 安徽奥克斯智能电气有限公司 | Overshoot prevention protection method and device and air conditioner |
| CN114353257B (en) * | 2022-01-26 | 2023-10-20 | 安徽奥克斯智能电气有限公司 | Overshoot protection method and device and air conditioner |
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Application publication date: 20190329 |