CN103388879B - A kind of control method of air-conditioner - Google Patents
A kind of control method of air-conditioner Download PDFInfo
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Abstract
The invention belongs to field of air conditioner control, particularly relate to a kind of energy-saving control method of air-conditioner.According to the control method of air-conditioner provided by the invention, by detecting outdoor environment temperature and indoor temperature in real time, and judge the size of outdoor real time temperature and default outdoor temperature threshold value; In cooling mode, when outdoor real time temperature is less than outdoor temperature threshold value, or in a heating mode, outdoor real time temperature is when being greater than outdoor temperature threshold value, and controlling air-conditioner according to target temperature T1 is that indoor real time temperature runs with the mode of the temperature difference sum preset.Otherwise then run with former design temperature.This control method can adjust the operational factor of air-conditioner at any time automatically, avoids user's operating air conditioner device continually, temperature is controlled under optimal comfort state, can meet user's refrigeration and the demand that heats, simultaneously again can using electricity wisely, realizes environmental protection.
Description
Technical field
The invention belongs to field of air conditioner control, particularly relate to a kind of energy-saving control method of air-conditioner.
Background technology
Air-conditioner in household electrical appliance as power consumption rich and influential family by users are denounced, but along with the raising of efficiency level, frequency changer application is commercially more and more extensive, really for air-conditioner minimizing energy consumption has played many effects.But in the usual use of air-conditioner, be all realize temperature controlled by the method for setting indoor objects temperature, often after setting temperature, would not have more regulation and control again, air-conditioner can be object run according to design temperature always.
To need summer air-conditioner to freeze, user, in order to reach the object of fast-refrigerating, usually sets a lower temperature in the first meeting of air-conditioner startup and realizes.But user is when entering sleep night, after outdoor temperature reduces, being passed to indoor heat can obviously reduce, indoor temperature also can decrease, do not need high refrigerating capacity, if but user changes temperature setting in time, and energy waste and comfortableness will be caused to reduce.User often after being frozen and waking up, can change temperature and arranges, just can reach energy-conservation and comfortableness requirement again.Thus, under the current trend not only emphasized comfortableness but also more focused on energy-saving and emission-reduction, how to make air-conditioner automatically in conjunction with the height of outdoor environment temperature, refrigeration duty high at outdoor environment temperature is high, realize fully freezing; After outdoor temperature reduces, also reducing the refrigeration duty of air-conditioner in time, is current technical problem urgently to be resolved hurrily.
Summary of the invention
In view of this, namely object of the present invention is the control method providing a kind of air-conditioner, be intended to solve in the running of existing air-conditioner after target temperature setting and cannot adjust in real time, the technical problem not only meeting user's comfortableness but also take into account energy-conserving and environment-protective can not be realized.
To achieve these goals, technical scheme provided by the invention is:
A control method for air-conditioner, described air-conditioner comprises the compressor of variable frequency, indoor and outdoor heat exchanger, indoor temperature transmitter, outdoor temperature sensor and controller, and described method comprises the following steps that order performs:
Control air-conditioner and enter saving operation mode;
Obtain outdoor real time temperature Tw and indoor real time temperature Tn;
Judge the size of described outdoor real time temperature Tw and default outdoor temperature threshold value Ty;
In cooling mode, when described outdoor real time temperature Tw is less than default outdoor temperature threshold value Ty, or in a heating mode, described outdoor real time temperature Tw is when being greater than default outdoor temperature threshold value Ty, and controlling air-conditioner according to target temperature T1 is that indoor real time temperature Tn runs with the mode of the temperature difference △ Ts sum preset;
In cooling mode, when described outdoor real time temperature Tw is more than or equal to default outdoor temperature threshold value Ty, or in a heating mode, described outdoor real time temperature Tw is when being less than or equal to default outdoor temperature threshold value Ty, controls air-conditioner and runs according to the mode that target temperature T1 is former design temperature Tm.
Adopt the control method of air-conditioner provided by the invention, can according to the needs of user, by real time temperature Tw outside sensing chamber and indoor real time temperature Tn, adjust the operational factor of air-conditioner at any time, the running temperature of air-conditioner is controlled the comfort conditions in the best, the demand of user's refrigerating/heating can be met, improve Consumer's Experience, the power consumption of air-conditioner can be reduced again, realize energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is the realization flow figure of the air-conditioner control method that first embodiment of the invention provides;
Fig. 2 is the realization flow figure of the air-conditioner control method that second embodiment of the invention provides;
Fig. 3 is the change curve of each temperature parameter that the air-conditioner control method provided according to the second embodiment in cooling mode realizes;
Fig. 4 is the realization flow figure of the air-conditioner control method that third embodiment of the invention provides;
Fig. 5 is the realization flow figure of the air-conditioner control method that fourth embodiment of the invention provides.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The object of the present invention is to provide a kind of control method of air-conditioner, by real time temperature Tw outside sensing chamber and indoor real time temperature Tn, adjust the operational factor of air-conditioner at any time, the demand of user's refrigerating/heating can be met, improve Consumer's Experience, the power consumption of air-conditioner can be reduced again, realize energy-conserving and environment-protective.
Embodiment one:
Fig. 1 is the realization flow figure of the air-conditioner control method that first embodiment of the invention provides; For convenience of explanation, illustrate only part related to the present embodiment, as shown in the figure:
In step s 11, control air-conditioner and enter saving operation mode.
In air-conditioner control method provided by the invention, this step is steps necessary.After user opens air-conditioner, the mode of operation that air-conditioner enters refrigeration or heats, the design temperature Tm first arranged according to user normally runs.After running a period of time of presetting at air-conditioner, automatically enter saving operation mode; Or under the selection operation of user, air-conditioner enters saving operation mode.
In step s 12, outdoor real time temperature Tw and indoor real time temperature Tn is obtained.
In this step, controller obtains outdoor real time temperature Tw and indoor real time temperature Tn respectively by outdoor temperature sensor and indoor temperature transmitter.
In step s 13, the size of described outdoor real time temperature Tw and default outdoor temperature threshold value Ty is judged.
In this step, controller needs outdoor real time temperature Tw and the outdoor temperature threshold value Ty preset to compare, and judges size.When this outdoor temperature threshold value Ty preset is dispatched from the factory by producer, setting or user independently set.As preferably, according to the difference of air conditioner refrigerating and heating mode, outdoor temperature threshold value Ty can be set respectively.Such as, in cooling mode, outdoor temperature threshold value Ty is 35 DEG C; In a heating mode, outdoor temperature threshold value Ty is 20 DEG C, etc.
In step S14, in cooling mode, when described outdoor real time temperature Tw is less than default outdoor temperature threshold value Ty, or in a heating mode, described outdoor real time temperature Tw is when being greater than default outdoor temperature threshold value Ty, and controlling air-conditioner according to target temperature T1 is that indoor real time temperature Tn runs with the mode of the temperature difference △ Ts sum preset.
In this step, the work distinguishing air-conditioner is needed to be carry out for freezing or heating.In cooling mode, when outdoor real time temperature Tw is less than default outdoor temperature threshold value Ty, controlling air-conditioner according to target temperature T1 is that indoor real time temperature Tn runs with the mode of the temperature difference △ Ts sum preset.In a heating mode, when outdoor real time temperature Tw is greater than default outdoor temperature threshold value Ty, controlling air-conditioner according to target temperature T1 is that indoor real time temperature Tn runs with the mode of the temperature difference △ Ts sum preset, and the realistic objective temperature adjustmemt that namely air-conditioner runs is T1=Tn+ △ Ts.Need to draw attention to, in cooling mode, the temperature difference △ Ts preset is negative; In a heating mode, the temperature difference △ Ts preset is positive number.Further, when the temperature difference △ Ts preset is dispatched from the factory by producer, setting or user independently set, generally, 0.5 DEG C≤| △ TS|≤10 DEG C.Further, in order to take into full account the comfortableness of user's using air-condition device, to preset the preferred value of temperature difference △ Ts be 0.5 DEG C≤| △ TS|≤3 DEG C, even in 1 DEG C less, interval≤| within △ TS|≤2 DEG C.
Embodiment two:
Fig. 2 is the realization flow figure of the air-conditioner control method that second embodiment of the invention provides; For convenience of explanation, again illustrate only part related to the present embodiment, as shown in the figure:
In the step s 21, control air-conditioner and enter saving operation mode.
In step S22, obtain outdoor real time temperature Tw and indoor real time temperature Tn.
In step S23, judge the size of described outdoor real time temperature Tw and default outdoor temperature threshold value Ty.
In step s 24 which, in cooling mode, when described outdoor real time temperature Tw is less than default outdoor temperature threshold value Ty, or in a heating mode, described outdoor real time temperature Tw is when being greater than default outdoor temperature threshold value Ty, and controlling air-conditioner according to target temperature T1 is that indoor real time temperature Tn runs with the mode of the temperature difference △ Ts sum preset.
From above-mentioned step S21 to step S24 only, the method that this second embodiment provides and the control method that the first embodiment provides are identical, and difference is: the control method that this second embodiment provides is further comprising the steps of:
In step s 25, in cooling mode, when described outdoor real time temperature Tw is more than or equal to default outdoor temperature threshold value Ty, or in a heating mode, described outdoor real time temperature Tw is when being less than or equal to default outdoor temperature threshold value Ty, controls air-conditioner and runs according to the mode that target temperature T1 is former design temperature Tm.
This step is the same with step S24, is all premised on outdoor real time temperature Tw with certain result that compares of outdoor temperature threshold value Ty preset.In cooling mode, when outdoor real time temperature Tw is more than or equal to default outdoor temperature threshold value Ty, controls air-conditioner and run according to former design temperature Tm; Or in a heating mode, when outdoor real time temperature Tw is less than or equal to default outdoor temperature threshold value Ty, controls air-conditioner and run according to former design temperature Tm.
That is, the control method of the air-conditioner that this second embodiment provides, in order to take into full account the comfortableness of user's using air-condition device, summer outdoor real time temperature very high, exceed outdoor temperature threshold value Ty time, or winter makes outdoor real time temperature is very low, lower than outdoor temperature threshold value Ty when, pay the utmost attention to the comfortableness demand of user, the mode that control air-conditioner equals the former design temperature Tm of user according to target temperature T1 is run.After outdoor real time temperature change, then according to the result that the outdoor real time temperature parameter got and outdoor temperature threshold value Ty compare, control air-conditioner with target temperature T1 for indoor real time temperature Tn and the mode of the temperature difference △ Ts sum preset run.
Fig. 3 is in cooling mode according to the air-conditioner control method that the second embodiment provides, the change curve of each temperature parameter of realization.See Fig. 3, default outdoor temperature threshold value Ty and former design temperature Tm replace with two parallel dotted lines respectively.
From in the time period of 0 to t1, the outdoor real time temperature Tw that outdoor temperature sensor detects is less than default outdoor temperature threshold value Ty all the time, and the target temperature T1 of air-conditioner is indoor real time temperature Tn and temperature difference △ Ts (△ Ts the is negative) sum preset;
From t1 to t2 during this period of time in, the outdoor real time temperature Tw that outdoor temperature sensor detects is greater than or equal to default outdoor temperature threshold value Ty's, air-conditioner just runs according to former design temperature Tm, and that is, target temperature T1 is now former design temperature Tm;
After having exceeded time point t2, the outdoor real time temperature Tw that outdoor temperature sensor detects in real time is less than again default outdoor temperature threshold value Ty all the time, at this moment, air-conditioner is automatic adjust operation parameter again, is that indoor real time temperature Tn runs with the mode of temperature difference △ Ts (△ Ts the is negative) sum preset according to target temperature T1.
As shown in Figure 3, in the running of air-conditioner, indoor temperature transmitter, outdoor temperature sensor can sensing chamber's internal and external temperatures in real time, and pass to controller, through contrast and judgement, the operational factor of air-conditioner is adjusted in real time, like this, both ensure that the demand of user's comfortableness, reach again the requirement of environmental protection and energy saving.
Embodiment three:
Fig. 4 is the realization flow figure of the air-conditioner control method that third embodiment of the invention provides; For convenience of explanation, again illustrate only part related to the present embodiment, as shown in the figure:
In step S31, control air-conditioner and enter saving operation mode.
In step s 32, outdoor real time temperature Tw and indoor real time temperature Tn is obtained.
In step S33, judge the size of described outdoor real time temperature Tw and default outdoor temperature threshold value Ty.
In step S34, in cooling mode, when described outdoor real time temperature Tw is less than default outdoor temperature threshold value Ty, or in a heating mode, described outdoor real time temperature Tw is when being greater than default outdoor temperature threshold value Ty, and controlling air-conditioner according to target temperature T1 is that indoor real time temperature Tn runs with the mode of the temperature difference △ Ts sum preset.
From above-mentioned step S31 to step S34 only, the method step that the 3rd embodiment provides is also identical with the control method step that the first embodiment provides, and difference is just, the control method that the 3rd embodiment provides is further comprising the steps of:
In step s 35, the size of described target temperature T1 and former design temperature Tm is judged.
In step s 35, controller needs the size of judgement, comparison object temperature T1=Tn+ △ Ts and former design temperature Tm further.Next, according to both comparative results, be that work enters next rate-determining steps in cooling mode or under heating mode in conjunction with air-conditioner.
In step S36, in cooling mode, when described target temperature T1 is less than or equal to former design temperature Tm, or in a heating mode, described target temperature T1 is when being more than or equal to former design temperature Tm, controls air-conditioner and runs according to the mode that target temperature T1 is former design temperature Tm.
When specific implementation, likely there is the temperature difference preset | the situation etc. that the numerical value of △ TS| is bigger than normal, so just easily cause air-conditioner in cooling mode, through revised target temperature T1 also lower than former design temperature Tm, or in a heating mode, through revised target temperature T1 also higher than former design temperature Tm, at this moment, controller all can control air-conditioner and run according to user design temperature Tm in advance, and namely target temperature T1 equals former design temperature Tm.Like this, both ensure that the demand of user's comfortableness, reach again the requirement of environmental protection and energy saving.
Embodiment four:
Fig. 5 is the realization flow figure of the air-conditioner control method that fourth embodiment of the invention provides; For convenience of explanation, again illustrate only part related to the present embodiment, as shown in the figure:
In step S41, control air-conditioner and enter saving operation mode.
In step S42, control air-conditioner high frequency in Preset Time and run.
In step S43, obtain outdoor real time temperature Tw and indoor real time temperature Tn.
In step S44, judge the size of described outdoor real time temperature Tw and default outdoor temperature threshold value Ty.
In step S45, in cooling mode, when described outdoor real time temperature Tw is less than default outdoor temperature threshold value Ty, or in a heating mode, described outdoor real time temperature Tw is when being greater than default outdoor temperature threshold value Ty, and controlling air-conditioner according to target temperature T1 is that indoor real time temperature Tn runs with the mode of the temperature difference △ Ts sum preset.
In the present embodiment, after air-conditioner enters saving operation mode, in order to make air-conditioner reach target set temperature fast, first controlling compressor high frequency in preset time t and running.This time t preset can be set when air-conditioner dispatches from the factory by producer, also by the needs of user according to self, independently can set.Generally, as preferred embodiment, the span of preset time t was good between 0.5 minute to 30 minutes.
After high frequency runs Preset Time, then enter next step S43: obtain outdoor real time temperature Tw and indoor real time temperature Tn by controller respectively by outdoor temperature sensor and indoor temperature transmitter.Ensuing method step again, then with the first embodiment is identical, just no longer repeats at this.
Be described below by two the concrete control methods of operational instances to air-conditioner provided by the invention.
First, for air-conditioner refrigerating operaton in summer.Assuming that the outdoor temperature threshold value Ty=33 DEG C preset, setting target temperature difference △ TS=-1 DEG C.After air-conditioner is opened, the design temperature that user is arranged is Tm=20 DEG C, when user needs air-conditioner power saving to run, selects to enter saving operation mode.Now indoor temperature transmitter detects that indoor real time temperature is Tn=29 DEG C, outdoor temperature sensor detects that outdoor real time temperature Tw is 32 DEG C (being less than outdoor temperature threshold value Ty=33 DEG C), controller controls air-conditioning according to T1=Tn+ △ Ts, i.e. T1=28 DEG C of operation.For making indoor fast cooling, the first high frequency running refrigerating of air-conditioner 5 minutes, then according to T1=28 DEG C of operation.
Especially, when outdoor real time temperature Tw >=33 DEG C obtained daytime, because outdoor temperature is higher, room refrigeration capacity requirement increases, and now air-conditioner is just according to former design temperature Tm=20 DEG C of operation.And if to night, when outdoor real time temperature is reduced to Tw≤30 DEG C, room refrigeration capacity requirement reduces, to be then indoor real time temperature Tn according to target temperature T1 run with the temperature difference △ Ts sum preset air-conditioner.That is, if now indoor temperature transmitter detects that indoor real time temperature is Tn=29 DEG C, the target temperature difference △ TS=-1 DEG C of former setting, controller then controls air-conditioner according to T1=Tn+ △ Ts, i.e. T1=28 DEG C of operation.
On the other hand, if the target temperature difference △ TS of user's setting is excessive, such as in these cases, user sets target temperature difference △ TS as-5 DEG C, then when indoor temperature Tn is lower than 25 DEG C, under saving operation mode, target temperature T1 will be also lower than former design temperature Tm=20 DEG C.In order to take into full account the effect that energy-conservation and comfortableness is laid equal stress on, air-conditioner is according to former design temperature Tm=20 DEG C of operation.When indoor real time temperature Tn is greater than or equal to 25 DEG C, being then indoor real time temperature Tn according to target temperature T1 again runs with the temperature difference △ Ts sum preset.
Second operational instances, operates to example with air conditioner heat-production in winter.Assuming that the outdoor temperature threshold value Ty=10 DEG C preset, setting target temperature difference △ TS=2 DEG C.After air-conditioner is opened, the design temperature that user is arranged is Tm=25 DEG C, when user needs air-conditioner power saving to run, selects to enter saving operation mode.Now indoor temperature transmitter detects that indoor real time temperature is Tn=15 DEG C, outdoor temperature sensor detects that outdoor real time temperature is 12 DEG C (being greater than outdoor temperature threshold value Ty=10 DEG C), then controller controls air-conditioning according to T1=Tn+ △ Ts, i.e. T1=17 DEG C of operation.For making indoor be rapidly heated, air-conditioner first high frequency operation can heat 5 minutes, then according to T1=17 DEG C of operation.
Especially, when outdoor real time temperature Tw is less than 10 DEG C, because outdoor temperature is lower, room heating capacity demand increases, and now air-conditioner is according to former design temperature Tm=25 DEG C of operation.And if outdoor real time temperature is increased to Tw when being more than or equal to 10 DEG C, room heating capacity demand reduces, be then that indoor real time temperature Tn runs with the temperature difference △ Ts sum preset according to target temperature T1 again.
Same, if the target temperature difference △ TS of user's setting is excessive, such as in these cases, it is 5 DEG C that user sets target temperature difference △ TS, then when indoor temperature Tn is higher than 20 DEG C, under saving operation mode, target temperature T1 will be also higher than former design temperature Tm=25 DEG C.In order to take into full account the effect that energy-conservation and comfortableness is laid equal stress on, air-conditioner is still according to former design temperature Tm=25 DEG C of operation.When indoor real time temperature Tn is less than 20 DEG C, being then indoor real time temperature Tn according to target temperature T1 again runs with the temperature difference △ Ts sum preset.
According to the control method of air-conditioner provided by the invention, can according to the comfortableness demand of user, by detecting outdoor environment temperature and indoor temperature in real time, automatically the operational factor of air-conditioner is adjusted at any time, avoid user's operating air conditioner device continually, temperature is controlled under optimal comfort state, the demand that can meet user's refrigeration and heat, simultaneously again can using electricity wisely, realize environmental protection.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, although with reference to previous embodiment to invention has been comparatively detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments or carry out equivalent replacement to wherein portion of techniques feature.All any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a control method for air-conditioner, described air-conditioner comprises the compressor of variable frequency, indoor and outdoor heat exchanger, indoor temperature transmitter, outdoor temperature sensor and controller, it is characterized in that, described method comprises the following steps that order performs:
Control air-conditioner and enter saving operation mode;
Obtain outdoor real time temperature Tw and indoor real time temperature Tn;
Judge the size of described outdoor real time temperature Tw and default outdoor temperature threshold value Ty;
In cooling mode, when described outdoor real time temperature Tw is less than default outdoor temperature threshold value Ty, or in a heating mode, described outdoor real time temperature Tw is when being greater than default outdoor temperature threshold value Ty, and controlling air-conditioner according to target temperature T1 is that indoor real time temperature Tn runs with the mode of the temperature difference △ Ts sum preset;
In cooling mode, when described outdoor real time temperature Tw is more than or equal to default outdoor temperature threshold value Ty, or in a heating mode, described outdoor real time temperature Tw is when being less than or equal to default outdoor temperature threshold value Ty, controls air-conditioner and runs according to the mode that target temperature T1 is former design temperature Tm.
2. the control method of air-conditioner as claimed in claim 1, is characterized in that, when described default temperature difference △ Ts is dispatched from the factory by producer, setting or user independently set, and its order of magnitude is between 0.5 DEG C to 3 DEG C.
3. the control method of air-conditioner as claimed in claim 2, it is characterized in that, in cooling mode, described default temperature difference △ Ts is negative; In a heating mode, described default temperature difference △ Ts is positive number.
4. the control method of air-conditioner as claimed in claim 1, is characterized in that, also comprises after the described control air-conditioner step that to be indoor real time temperature Tn according to target temperature T1 run with the mode of the temperature difference △ Ts sum preset:
Judge the size of described target temperature T1 and former design temperature Tm;
In cooling mode, when described target temperature T1 is less than or equal to former design temperature Tm, or in a heating mode, described target temperature T1 is when being more than or equal to former design temperature Tm, controls air-conditioner and runs according to the mode that target temperature T1 is former design temperature Tm.
5. the control method of air-conditioner as claimed in claim 1, is characterized in that, also comprised before described control air-conditioner enters the step of saving operation mode:
Start air-conditioner, design temperature Tm is set.
6. the control method of air-conditioner as claimed in claim 5, it is characterized in that, the step that described control air-conditioner enters saving operation mode is specially:
Control air-conditioner by after described design temperature Tm operation Preset Time, automatically enter saving operation mode.
7. the control method of air-conditioner as claimed in claim 5, it is characterized in that, the step that described control air-conditioner enters saving operation mode is specially:
Receive the control information operation of user, control air-conditioner and enter saving operation mode.
8. the control method of air-conditioner as claimed in claim 1, is characterized in that, also comprise after described control air-conditioner enters the step of saving operation mode:
Control air-conditioner high frequency in Preset Time to run.
9. the control method of the air-conditioner as described in claim 6 or 8, is characterized in that, when described Preset Time is dispatched from the factory by producer, setting or user independently set, and its span is between 0.5 minute to 30 minutes.
10. the control method of air-conditioner as claimed in claim 1, is characterized in that, when described outdoor temperature threshold value Ty is dispatched from the factory by producer, setting or user independently set.
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| CN108644970B (en) * | 2018-03-28 | 2021-01-26 | 奥克斯空调股份有限公司 | Method for automatically controlling air outlet of air conditioner |
| CN109855263B (en) * | 2018-12-28 | 2021-08-24 | 奥克斯空调股份有限公司 | Air conditioner energy-saving temperature confirmation method and device and intelligent air conditioner control system |
| CN110160246A (en) * | 2019-05-30 | 2019-08-23 | 广东美的暖通设备有限公司 | Operation method, fresh air conditioner and the computer readable storage medium of compressor |
| CN111781844A (en) * | 2020-06-24 | 2020-10-16 | 珠海格力电器股份有限公司 | Intelligent household appliance control method, device, server and storage medium |
| CN114043839B (en) * | 2021-11-03 | 2024-03-15 | 金龙联合汽车工业（苏州）有限公司 | New energy electric air conditioner, automatic control method and vehicle |
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| JP4032634B2 (en) * | 2000-11-13 | 2008-01-16 | ダイキン工業株式会社 | Air conditioner |
| JP2007040554A (en) * | 2005-08-01 | 2007-02-15 | Matsushita Electric Ind Co Ltd | Air conditioner |
| JP2010249452A (en) * | 2009-04-17 | 2010-11-04 | Mitsubishi Electric Corp | Air conditioner |
| CN102338440B (en) * | 2010-07-22 | 2013-08-07 | 海尔集团公司 | Variable frequency air conditioner and control method thereof |
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