CN107781945B - The refrigeration control method of convertible frequency air-conditioner - Google Patents
The refrigeration control method of convertible frequency air-conditioner Download PDFInfo
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- CN107781945B CN107781945B CN201710840199.2A CN201710840199A CN107781945B CN 107781945 B CN107781945 B CN 107781945B CN 201710840199 A CN201710840199 A CN 201710840199A CN 107781945 B CN107781945 B CN 107781945B
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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
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Abstract
The present invention provides a kind of refrigeration control methods of convertible frequency air-conditioner, air conditioner indoor unit includes two evaporators being arranged in parallel, and corresponding two blowers of two evaporators and two air outlet groups corresponding with two blowers respectively respectively, each air outlet group includes at least one air outlet, when refrigeration control method includes: that air-conditioning is run in a chiller mode, the coil temperature of indoor target temperature Ta, indoor environment temperature Tb, outdoor environment temperature Tc and two evaporators is detected, lower temperature value is Td in two coil temperatures；Detect the open state of two blowers；If two blowers are opened, the value of the temperature range according to locating for Td and Ta, Tb, Tc determine the running frequency of compressor；If only one blower is opened, the value of the temperature difference range according to locating for Tb-Ta and Ta, Tb, Tc determine the running frequency of compressor.The present invention accurately controls the running frequency of compressor, and air-conditioning is made not only to meet refrigeration demand, but also is avoided that evaporator freezes.
Description
Technical field
The present invention relates to refrigeration technology field, in particular to a kind of refrigeration control method of convertible frequency air-conditioner.
Background technique
Indoor target temperature that convertible frequency air-conditioner is set generally according to remote controler, indoor environment temperature, outdoor environment temperature come
The real time execution frequency of compressor is calculated.But the indoor unit of current some air-conditionings be provided with two evaporators in parallel and
Two blowers, to realize that various modes are blown.Therefore it usually will appear the case where only opening a blower.
In refrigeration, the corresponding evaporator section of the blower that do not open is changed because carrying out Forced Air Convection to it without blower
Heat, it is unfavorable to make to exchange heat, and will lead to that coil temperature is lower, and extreme case can generate evaporator sharp freezing.Therefore, how to compression
The running frequency of machine is accurately controlled, and so that air-conditioning is not only met refrigeration demand, but also be avoided that evaporator freeze, becomes urgently to be resolved
The problem of.
Summary of the invention
It is an object of the present invention to overcome the drawbacks described above of the prior art, a kind of refrigeration control of convertible frequency air-conditioner is provided
Method is realized and is accurately controlled compressor operating frequency, and air-conditioning is made not only to meet refrigeration demand, but also is avoided that evaporator goes out
Now freeze.
It is of the invention to realize air-supply and soft air-supply on demand further objective is that promote the intelligence of air-conditioning,
Enhance the comfort of user.
Particularly, the present invention provides a kind of refrigeration control method of convertible frequency air-conditioner, the indoor unit of air-conditioning is set including parallel connection
Two evaporators set, two blowers corresponding with two evaporators, each blower correspond at least one air outlet respectively, refrigeration
Control method includes:
When air-conditioning is run in a chiller mode, indoor target temperature Ta, indoor environment temperature Tb, outdoor environment temperature Tc are detected
And the coil temperature of two evaporators, lower temperature value is Td in two coil temperatures；
Detect the open state of two blowers；
If two blowers are opened, the value of the temperature range according to locating for Td and Ta, Tb, Tc determine the operation of compressor
Frequency；
If only one blower is opened, the value of the temperature difference range according to locating for Tb-Ta and Ta, Tb, Tc determine compressor
Running frequency.
Optionally, when two blowers are opened, the running frequency of compressor is determined in the following manner: as Td > T2, control
Compressor variable frequency operation processed, frequency f=f (Ta, Tb, Tc)；As T1≤Td≤T2, controls the fixed frequency of compressor and run, frequency f=f
(Ta1, Tb1, Tc1), in formula, Ta1, Tb1 and Tc1 are respectively indoor target temperature, the indoor environment temperature when Td just drops to T2
Degree and outdoor environment temperature；As Td < T1, control compressor frequency reducing operation makes its frequency f < f (Ta1, Tb1, Tc1).
Optionally, when only one blower is opened, the running frequency of compressor is determined in the following manner: according to temperature difference Tb-Ta
Frequency correction factor b is calculated, the running frequency f=b*f (Ta, Tb, Tc) of compressor, b < 1 in formula are controlled.
Optionally, as Tb-Ta < T3, b=b1；As T3≤Tb-Ta≤T4, b=b2；As Tb-Ta > T4, b=
B3, b1 < b2 < b3 in formula.
Optionally, T1=0 DEG C, T2=4 DEG C, T3=7 DEG C, T4=13 DEG C, b1=0.5, b2=0.8, b3=0.9.
Optionally, air-conditioning include compressor, condenser, tee tube, the first electric expansion valve and the second electric expansion valve, with
And two evaporators；Wherein the outlet of the import connection condenser of tee tube, two outlets of tee tube are respectively communicated with the first electricity
The import of sub- expansion valve and the second electric expansion valve；The outlet of first electric expansion valve and the second electric expansion valve is respectively communicated with two
The import of a evaporator；And two evaporator outlets are respectively communicated with the import of compressor.
Optionally, vertical pendulum leaf group is provided at each air outlet comprising vertically extending and be installed on more at air outlet
A vertical pendulum leaf, multiple vertical pendulum leaves can pivot in unison to adjust the left and right directions of outlet air；And sideway leaf group comprising horizontal extension
Multiple sideway leaves, be mounted on vertical pendulum leaf rear, multiple sideway leaves can pivot in unison to adjust the up and down direction of outlet air.
Optionally, corresponding two air outlets of a blower, the corresponding air outlet of another blower；And three air outlets are along straight
Line arrangement.
Optionally, two blowers are cross flow fan.
Optionally, two evaporators are finned evaporator and share same fins set, the coil pipe point of two evaporators
Not Pi Pei fins set two half-unit.
In the refrigeration control method of convertible frequency air-conditioner of the invention, first according to indoor target temperature, indoor environment temperature and
Outdoor environment temperature just determines the running frequency f=f (Ta, Tb, Tc) of compressor.When two blowers are run, two evaporations
Device can obtain good heat exchange, and it is smaller a possibility that freezing occurred.At this point, can be according to the coil temperature of evaporator come to pressure
Contracting unit frequency is modified, and when coil temperature is lower than T1, normally calculates running frequency by above-mentioned function；Meet in coil temperature
When T1≤Td≤T2, makes it that fixed frequency be kept to run, coil temperature is avoided to further decrease.As coil temperature Td < T1, control
Compressor frequency reducing operation, promotes the coil temperature of evaporator, and avoiding it from continuing cooling causes to freeze.And work as only one fan operation
When, to avoid the evaporator section not covered by the wind of the blower heat exchange unfavorable, the amendment less than 1 is calculated according to temperature difference Tb-Ta
Coefficient b reduces the running frequency of compressor, promotes evaporating temperature, avoids evaporator freeze.Therefore the present invention is to compression
The running frequency of machine is accurately controlled, and so that air-conditioning is not only met refrigeration demand, but also be avoided that evaporator freeze.
Further, two evaporators, two blowers and multiple air outlets is arranged in air conditioner indoor unit, can be according to user's
Refrigeration demand adjusts the cold medium flux of quantity, wind speed and evaporator that blower is opened, realizes that the intelligence of air quantity and refrigerating capacity is adjusted
Section makes air quantity and refrigerating capacity more match indoor demand, has saved air conditioning energy consumption.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Detailed description of the invention
Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is the air conditioner indoor unit partial structure diagram of one embodiment of the invention；
Fig. 2 is the refrigeration cycle schematic diagram of air conditioner indoor unit shown in Fig. 1；
Fig. 3 is the decomposition diagram of the air-supply structure of air conditioner indoor unit shown in Fig. 1；
Fig. 4 is the structural schematic diagram of the evaporator of the air conditioner indoor unit of one embodiment of the invention；
Fig. 5 is the schematic diagram of the refrigeration control method of the air-conditioning of one embodiment of the invention；
Fig. 6 is the flow chart of the refrigeration control method of the air-conditioning of one embodiment of the invention.
Specific embodiment
The embodiment of the invention provides a kind of refrigeration control methods of convertible frequency air-conditioner.Fig. 1 is one embodiment of the invention
Air conditioner indoor unit partial structure diagram；Fig. 2 is the refrigeration cycle schematic diagram of air conditioner indoor unit shown in Fig. 1；Fig. 3 is shown in Fig. 1
The decomposition diagram of the air-supply structure of air conditioner indoor unit；Fig. 4 is the evaporator of the air conditioner indoor unit of one embodiment of the invention
Structural schematic diagram.Fig. 2 only illustrates that several main components of cooling cycle system, Fig. 4 distinguish two evaporators with dotted line.
As shown in Figures 1 to 4, the indoor unit of convertible frequency air-conditioner includes shell, two evaporators, two blowers, multiple outlet air
Mouth and multiple pendulum leaf components.Evaporator 551, blower 410 and air outlet 112,114 match.Evaporator 552,420 and of blower
Air outlet 116 matches.Fig. 1 only illustrates the front panel 110 of shell, offers air outlet above-mentioned, shell on front panel 110
The rear side not shown offers air inlet.Outdoor air enters shell from air inlet, by two steamings under the driving of blower
Device is sent out, interior is blowed to from corresponding air outlet with after evaporator heat exchange, realizes the refrigerating/heating to indoor environment.
In the embodiment shown in Fig. 1 to Fig. 4, the air-out area of three air outlets 112,114,116 may be configured as it is identical,
Because evaporator 551 and the matched air outlet quantity of blower 410 are more, the exchange capability of heat of evaporator 551 and the air-supply energy of blower 410
Power is greater than evaporator 552 and blower 420.For example, can make two evaporators 551,552 under identical heat-exchanging state, evaporator
551 heat exchange amount is twice of evaporator 552, makes two blowers under same rotational speed, and the air quantity of blower 410 is blower 420
Twice.
Two blowers can be cross flow fan, to keep the connection between cross flow fan and shell more firm, can make blower
410 motor 411 is located at its top, and the motor 421 of blower 420 is located at its bottom.It may be provided between two blowers 410,420
Bearing.
Multiple pendulum leaf components are (for example, the multiple vertical pendulum leaves 312 and multiple sideway leaves 322 at air outlet 112 constitute one
Pendulum leaf component) it is matched one by one with multiple air outlets, for adjusting the wind direction of each air outlet.
Air conditioner indoor unit may also include ducting assembly, ducting assembly be erected at blower 410, blower 420 and front panel 110 it
Between comprising shell 120 and multiple partitions 121, shell 120 limit the open wind-guiding chamber in front and back, and multiple partitions are vertically arranged
Wind-guiding chamber inside the shell, is separated out the multiple air ducts 123,124,125 being isolated from each other by column, and each air duct matches one and goes out
Air port for the wind of blower to be drained to the air outlet, and does not interfere with each other the wind for flowing to multiple air outlets.
Also, each pendulum leaf component includes vertical pendulum leaf group and sideway leaf group.Wherein, vertical pendulum leaf group includes vertically extending and pacifies
Loaded on multiple vertical pendulum leaves 312,314,316 at air outlet 112,114,116, multiple vertical pendulum leaves can pivot in unison to adjust outlet air
Left and right directions.Sideway leaf group includes horizontal-extending multiple sideway leaves 324,324,326, is mounted in air duct, multiple cross
Pendulum leaf can pivot in unison to adjust the up and down direction of outlet air.A sideway leaf (or vertical pendulum leaf) can be driven by one motor of setting
Rotation is articulated with the sideway leaf (or vertical pendulum leaf) and remaining sideway leaf (or vertical pendulum leaf) by a connecting rod, realizes whole sideways
The pivot in unison of leaf (or vertical pendulum leaf).Certainly, sideway leaf can also be arranged to go out in air outlet, vertical pendulum leaf is arranged in air duct.
Such as Fig. 2, air-conditioning include compressor 510, condenser 520,530, two electric expansion valves 541,542 of tee tube and
Two evaporators 551,552, the wherein outlet of the import connection condenser 520 of tee tube 530, two outlets of tee tube 530
It is respectively communicated with the import of two electric expansion valves 541,542.The outlet of two electric expansion valves 541,542 is respectively communicated with evaporator
551 and evaporator 552 import.The import of the outlet compressor 510 of evaporator 551 and evaporator 552.
Such as Fig. 1, it is provided with dispenser 561 after restricting element 541, dispenser 562 is provided with after electric expansion valve 542,
For refrigerant to be divided into multichannel, the heat exchange efficiency of evaporator is improved.After refrigerant flows through the coil pipe of two evaporators, collection is converged to
In tracheae 580, then compressor 510 is flowed to out of gas collecting tube 580.
In some embodiments, as shown in figure 4, evaporator 551 and evaporator 552 are finned evaporator, and two are steamed
Hair device shares same fins set 501, and the coil pipe 502 of evaporator 551 is installed on the top of fins set 501, the coil pipe of evaporator 552
503 are installed on the lower part of fins set 501.The scheme of independent, each production self installation of compared to two evaporators, the present embodiment can be square
Just the production and installation of evaporator, while also saving enclosure interior space.
During refrigerating of convertible frequency air conditioner, refrigerant is in low temperature inside evaporator, cannot such as change in time with air
Hot (i.e. evaporator coil heat absorption), it will cause evaporator surface condensation, frosting even to freeze, influence evaporator again in turn
Heat exchange efficiency.For this purpose, the refrigeration control method of the embodiment of the present invention avoids evaporator sharp freezing by following step, appropriate
Moment reduces compressor frequency and is able to ascend evaporating temperature.
Fig. 5 is the schematic diagram of the refrigeration control method of the air-conditioning of one embodiment of the invention.As shown in figure 5, of the invention
Refrigeration control method can comprise the following steps that
Step S502 when air-conditioning is run in a chiller mode, detects indoor target temperature Ta (being set by the user), indoor environment
The coil temperature of temperature Tb, outdoor environment temperature Tc and two evaporators, lower temperature value is Td in two coil temperatures.
Above-mentioned temperature can be detected by temperature sensor.
Step S504 detects the open state of two blowers, that is, determines that air conditioner indoor unit opens several blowers.If two
Blower is opened, and step S506 is executed.If only one blower is opened, step S508 is executed.
The value of step S506, the temperature range according to locating for Td and Ta, Tb, Tc determine the running frequency of compressor.
The value of step S508, the temperature difference range according to locating for Tb-Ta and Ta, Tb, Tc determine the running frequency of compressor.
Fig. 6 is the flow chart of the refrigeration control method of the air-conditioning of one embodiment of the invention.In some embodiments, air-conditioning
Under in refrigeration mode, following step can be used and controlled.
Step S601 when air-conditioning is run in a chiller mode, detects indoor target temperature Ta (being set by the user), indoor environment
The coil temperature of temperature Tb, outdoor environment temperature Tc and two evaporators, lower temperature value is Td in two coil temperatures.
Step S602 detects the open state of two blowers, that is, determines that air conditioner indoor unit opens several blowers.If two
Blower is opened, and step S604 is executed.If only one blower is opened, step S609 is executed.
Step S604 judges whether Td > T2 is true, if so, step S605 is executed, if invalid execution step S606.
Step S605, Td > T2 is set up.Control compressor variable frequency operation, frequency f=f (Ta, Tb, Tc).That is frequency f is
The function of Ta, Tb, Tc.Basic ideas are to increase compressor frequency f with the increase of the temperature difference between Tb and Ta, with the increasing of Tc
Increase greatly.The meter of the compressor frequency of a blower and an evaporator is only arranged in specific calculation and the prior art
Calculation mode is identical, is no longer described in detail herein.
Step S606 judges whether T1≤Td≤T2 is true, if so, step S607 is executed, if invalid execution step
S608。
Step S607, T1≤Td≤T2 are set up.It controls the fixed frequency of compressor to run, frequency f=f (Ta1, Tb1, Tc1), formula
In, Ta1, Tb1 and Tc1 are respectively indoor target temperature, indoor environment temperature and the outdoor environment temperature when Td just drops to T2
Degree.Because Td has reached or more than T1, it is therefore desirable to which compressor keep frequency makes coil temperature not continue to reduce.
Step S608, T1≤Td≤T2 are invalid, that is, Td < T1 is set up.Compressor frequency reducing operation is controlled, its frequency is made
Rate f < f (Ta1, Tb1, Tc1).Because of Td < T1 at this time, coil temperature is too low, for avoid evaporating pressure and evaporating temperature into
The decline of one step need to carry out frequency reducing to compressor as early as possible.
This field in above-mentioned steps, technical staff can determine the value of T1 and T2 by testing, for example, make T1=0 DEG C,
T2=4 DEG C.
In above-mentioned steps, when running because of two blowers, two evaporators can obtain good heat exchange.According to evaporation
The coil temperature of device is modified compressor frequency, so that air-conditioning is not only met refrigeration demand, but also be avoided that evaporator freezes
Knot.
Step S609, when only one blower is opened, the value of the temperature difference range according to locating for Tb-Ta and Ta, Tb, Tc are determined
The running frequency of compressor.Specifically, frequency correction factor b is calculated according to temperature difference Tb-Ta, controls the running frequency f of compressor
=b*f (Ta, Tb, Tc), b < 1 in formula.
Specifically, the value of b can be determined according to the temperature range locating for Tb-Ta.As Tb-Ta < T3, b=b1；Work as T3
When≤Tb-Ta≤T4, b=b2；As Tb-Ta > T4, b=b3, b1 < b2 < b3 in formula.In some embodiments, T3=7
DEG C, T4=13 DEG C, b1=0.5, b2=0.8, b3=0.9.
In above-described embodiment, when only one fan operation, to avoid not changed by the evaporator section that the wind of the blower covers
Heat is unfavorable to cause temperature too low, and above-described embodiment reduces the running frequency of compressor, avoid the partial vaporiser by making b < 1
There is sharp freezing.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein multiple shows
Example property embodiment still without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or deduce out many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers all such other variations or modifications.
Claims (8)
1. a kind of refrigeration control method of convertible frequency air-conditioner, the indoor unit of the air-conditioning includes two evaporators being arranged in parallel, point
Two blowers not corresponding with described two evaporators, each blower correspond at least one air outlet, the refrigeration control method
Include:
When air-conditioning is run in a chiller mode, detection indoor target temperature Ta, indoor environment temperature Tb, outdoor environment temperature Tc and
The coil temperature of two evaporators, lower temperature value is Td in two coil temperatures；
Detect the open state of two blowers；
If two blowers are opened, the value of the temperature range according to locating for Td and Ta, Tb, Tc determine the operation frequency of compressor
Rate；
If only one blower is opened, the value of the temperature difference range according to locating for Tb-Ta and Ta, Tb, Tc determine the operation of compressor
Frequency；And
When two blowers are opened, the running frequency of compressor is determined in the following manner:
As Td > T2, control compressor variable frequency operation, frequency f=f (Ta, Tb, Tc)；
As T1≤Td≤T2, the fixed frequency of control compressor is run, frequency f=f (Ta1, Tb1, Tc1), in formula, Ta1, Tb1 and Tc1 points
It Wei not indoor target temperature, indoor environment temperature and outdoor environment temperature of the Td when just dropping to T2；
As Td < T1, control compressor frequency reducing operation makes its frequency f < f (Ta1, Tb1, Tc1)
When only one blower is opened, the running frequency of compressor is determined in the following manner:
Frequency correction factor b is calculated according to temperature difference Tb-Ta, controls the running frequency f=b*f (Ta, Tb, Tc) of compressor, b in formula
< 1.
2. refrigeration control method according to claim 1, wherein
As Tb-Ta < T3, b=b1；
As T3≤Tb-Ta≤T4, b=b2；
As Tb-Ta > T4, b=b3, b1 < b2 < b3 in formula.
3. refrigeration control method according to claim 2, wherein
T1=0 DEG C, T2=4 DEG C, T3=7 DEG C, T4=13 DEG C, b1=0.5, b2=0.8, b3=0.9.
4. refrigeration control method according to claim 1, wherein
The air-conditioning includes compressor, condenser, tee tube, the first electric expansion valve and the second electric expansion valve and two
The evaporator；Wherein
The import of the tee tube connects the outlet of the condenser, and two outlets of the tee tube are respectively communicated with described first
The import of electric expansion valve and second electric expansion valve；
The outlet of first electric expansion valve and second electric expansion valve is respectively communicated with the import of two evaporators；
And
Two evaporator outlets are respectively communicated with the import of the compressor.
5. refrigeration control method according to claim 1, wherein being provided at each air outlet
Vertical pendulum leaf group comprising vertically extending and be installed on multiple vertical pendulum leaves at the air outlet, the multiple vertical pendulum leaf can
Pivot in unison is to adjust the left and right directions of outlet air；And
Sideway leaf group comprising horizontal-extending multiple sideway leaves are mounted on vertical pendulum leaf rear, the multiple sideway leaf
Can pivot in unison to adjust the up and down direction of outlet air.
6. refrigeration control method according to claim 1, wherein
Corresponding two air outlets of one blower, another corresponding air outlet of the blower；And
Three air outlets are along arranged in a straight line.
7. refrigeration control method according to claim 1, wherein
Described two blowers are cross flow fan.
8. refrigeration control method according to claim 1, wherein
Described two evaporators are finned evaporator and share same fins set, the coil pipe difference of described two evaporators
Two half-unit with the fins set.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710840199.2A CN107781945B (en) | 2017-09-18 | 2017-09-18 | The refrigeration control method of convertible frequency air-conditioner |
| PCT/CN2018/105789 WO2019052541A1 (en) | 2017-09-18 | 2018-09-14 | Method and device for controlling refrigeration of variable frequency air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710840199.2A CN107781945B (en) | 2017-09-18 | 2017-09-18 | The refrigeration control method of convertible frequency air-conditioner |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107781945B (en) * | 2017-09-18 | 2019-05-31 | 青岛海尔空调器有限总公司 | The refrigeration control method of convertible frequency air-conditioner |
| CN107781946B (en) * | 2017-09-18 | 2019-12-31 | 青岛海尔空调器有限总公司 | Heating control method of variable frequency air conditioner |
| CN110873435B (en) * | 2018-08-31 | 2021-12-28 | 青岛海尔空调电子有限公司 | Anti-frosting control method for indoor unit of air conditioner |
| CN111189180B (en) * | 2018-11-14 | 2021-09-21 | 重庆海尔空调器有限公司 | Air conditioner and anti-freezing control method thereof |
| CN111189193B (en) * | 2018-11-14 | 2021-09-21 | 重庆海尔空调器有限公司 | Air conditioner and anti-freezing control method thereof |
| CN111189196B (en) * | 2018-11-14 | 2021-10-29 | 青岛海尔空调器有限总公司 | Air conditioner and anti-freezing control method thereof |
| CN111189197B (en) * | 2018-11-14 | 2021-09-21 | 重庆海尔空调器有限公司 | Air conditioner and anti-freezing control method thereof |
| CN110017587B (en) * | 2019-04-17 | 2021-09-28 | 广东美的制冷设备有限公司 | Operation control method, operation control device, air conditioner and computer readable storage medium |
| CN110017542A (en) * | 2019-04-17 | 2019-07-16 | 广东美的制冷设备有限公司 | Air conditioner, anti-freeze control method and computer readable storage medium |
| CN114216237A (en) * | 2021-11-12 | 2022-03-22 | 青岛海尔空调器有限总公司 | Control method for air conditioner |
| CN114543297A (en) * | 2022-01-17 | 2022-05-27 | 青岛海尔空调器有限总公司 | Control method for air conditioner and air conditioner |
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| CN103822332A (en) * | 2014-03-14 | 2014-05-28 | 四川长虹空调有限公司 | Sleep state-based temperature adjusting air conditioner and control method thereof |
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| Publication number | Publication date |
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| CN107781945A (en) | 2018-03-09 |
| WO2019052541A1 (en) | 2019-03-21 |
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