CN1963324A - Air conditioner - Google Patents
Air conditioner Download PDFInfo
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- CN1963324A CN1963324A CN 200610146461 CN200610146461A CN1963324A CN 1963324 A CN1963324 A CN 1963324A CN 200610146461 CN200610146461 CN 200610146461 CN 200610146461 A CN200610146461 A CN 200610146461A CN 1963324 A CN1963324 A CN 1963324A
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- temperature
- running
- zone
- indoor
- dehumidifying
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Abstract
The present invention provides an air conditioner which can operate continuously at night when the outside air temperature is lower without opening and closing the compressor frequently and restrain the indoor humidity generating abrupt change to realize the comfortable sleeping environment. The air conditioner has the reheating dehumidify function of motion for heating the room air using the first indoor heat exchanger and for cooling using the second indoor heat exchanger, also includes the sleep pattern running control device for processing control, when in operation with a desuperheating zone dropping from the target temperature and a heating zone wherein the indoor temperature rises. The sleep pattern running control device has the operation switch control mode for processing refrigeration operation in the desuperheating zone, and being switched from the refrigeration operation to the reheating dehumidify operation starting at the control in the heating zone.
Description
Technical field
The present invention relates to a kind of air conditioner, relate in particular to the air conditioner that has sleep pattern running (asleep comfortmode operation) control device, turns round in from cooling zone that target temperature descends and indoor temperature from the intensification zone of this cooling zone rising in indoor temperature.
Background technology
Generally speaking, air conditioner requires to carry out different air-conditioning control when user's (user) sleep neutralization is not slept.Therefore, the cooling operation pattern (cooling operation mode) when being suitable for sleeping is set with " sleep pattern (mode) ", carries out the cooling operation based on this " sleep pattern ".
The cooling operation that carries out based on the sleep operation mode of setting in the air conditioner in the past, behind the certain hour that turned round under the initial target temperature of setting of user, room temperature is slowly risen, reduce thereby can comply with the metabolism amount of human body in sleep, compare with the situation of carrying out common cooling operation and can obtain more comfortable sleep.
" sleep pattern " in the past is not prerequisite to continue carrying out cooling operation the whole night basically, and after entering the time period that outside air temperature begins to reduce, cooling operation can stop.
Yet, under in the past " sleep pattern ",, indoor humidity can automatically not switch to the dehumidifying running from cooling operation even raising yet, and the user must carry out manual switchover.
Therefore, drive a kind of air conditioner of proposition in the 2004-93066 communique (to call patent documentation 1 in the following text) the Japan Patent spy, in the sleep pattern running, can automatically switch to the running that makes dehumidification function preferential from common running, and, make the preferential running of dehumidification function also can not diminish the stability of control even carry out this type of.
Yet, cooling operation under " sleep pattern " of patent documentation 1 described air conditioner is to carry out lower night in outdoor temperature, and room temperature is risen, therefore can become inefficient cooling operation, cause high frequent ground to carry out switch (ON/OFF), the room temperature variation is fluctuateed easily, and (hunting: oscillatory occurences), room temperature control may become unstable.In addition, need to heat the dehumidifying running of tendency sometimes, however the running that when cooling operation or mistake throttling cooling operation, can not heat tendency.
Summary of the invention
For addressing the above problem, even thereby the object of the present invention is to provide and a kind ofly when night, outside air temperature was lower than indoor temperature, also need not continually the switch compressor and can suppress indoor humidity the air conditioner of realizing the comfortable sleep environment takes place sharply to change.
In order to reach above-mentioned purpose, air conditioner of the present invention comprises: compressor, four-way switching valve, outdoor heat converter, the major loop throttle mechanism, when running dehumidifying is as the 1st indoor heat converter of condenser, when running dehumidifying is as the 2nd indoor heat converter of evaporimeter, and be arranged on dehumidifying throttle mechanism between described the 1st indoor heat converter and described the 2nd indoor heat converter, have and utilize described the 1st indoor heat converter to heat room air, and the dehumidifying of the heat again function of motion of utilizing described the 2nd indoor heat converter to cool off, it is characterized in that, comprise and controlling so that have room temperature during cooling operation that this sleep pattern operation controller has in the cooling zone and carries out cooling operation from the cooling zone that target temperature descends and the sleep pattern operation controller in the indoor temperature intensification zone of rising afterwards, when beginning, the control in the zone of heating up switches to the running switching controls pattern (pattern) of heat dehumidifying running again from cooling operation.
Adopt the present invention, also turn round sustainably when outside air temperature is low and need not continually the switch compressor and can suppress indoor humidity the air conditioner of realizing the comfortable sleep environment takes place sharply to change at night thereby can provide a kind of.
Description of drawings
Fig. 1 is the block diagram of the air conditioner of one embodiment of the present of invention.
Fig. 2 is the chart that the room temperature of air conditioner in " sleep pattern " running of explanation one embodiment of the present of invention changes.
Fig. 3 is that the air conditioner of explanation one embodiment of the present of invention carries out the chart that the hot room temperature that dehumidifies when turning round changes again in " sleep pattern " running.
Fig. 4 is that the air conditioner of explanation comparative example carries out the chart that the hot room temperature that dehumidifies when turning round changes again in " sleep pattern " running.
Fig. 5 is that the air conditioner of explanation other embodiment of the present invention carries out the chart that the hot room temperature that dehumidifies when turning round changes again in " sleep pattern " running.
(symbol description)
1 air conditioner, 2 kind of refrigeration cycle
3 compressors, 5 outdoor heat converters
6 electric expansion valves 7 the 1st indoor heat converter
8 electric expansion valves 9 the 2nd indoor heat converter
10 converter plants, 11 outdoor fans
12 indoor fans, 13 running control loops
14 sleep pattern control device, 15 remote controllers
The specific embodiment
Air conditioner to one embodiment of the invention describes with reference to the accompanying drawings.
Fig. 1 is the pie graph of the air conditioner of one embodiment of the invention.In addition, the cooling operation with what is called " hot again dehumidification type " air conditioner with two indoor heat converters is that example describes in the present embodiment.
As shown in Figure 1, air conditioner 1 of the present invention has the kind of refrigeration cycle (refrigeration cycle) 2 that circulation has cold-producing medium, the compressor 3 that utilizes this kind of refrigeration cycle 2 compresses and the cold-producing medium that becomes HTHP is sent to outdoor heat converter 5 as condenser by cross valve 4, and condensation liquefaction becomes the liquid refrigerant of HTHP by carrying out heat exchange with outdoor air at this.
The liquid refrigerant utilization of this HTHP is carried out throttling as the electric expansion valve 6 of main throttle mechanism, become the liquid refrigerant of low-temp low-pressure and be sent to the 1st indoor heat converter 7, then by being sent to the 2nd indoor heat converter 9 as the electric expansion valve 8 that dehumidifies with throttle mechanism.
The liquid refrigerant that is sent to as the low-temp low-pressure of the 1st indoor heat converter 7 of evaporimeter operation and the 2nd indoor heat converter 9 carries out heat exchange and generating gasification with room air in the 1st and the 2nd indoor heat converter 7,9, become the gaseous refrigerant of low-temp low-pressure.Room air carries out the heat exchange release heat because of the liquid refrigerant with this moment, thereby is cooled.
Gaseous refrigerant from the 2nd indoor heat converter 9 is sent to the suction side of compressor 2 by cross valve 4 again and utilizes this compressor 2 to compress, and is repeating process same as described above.
On the other hand, when the dehumidifying of heat again under carrying out " sleep pattern " of the present invention is turned round, electric expansion valve 6 is unlocked, dehumidifying uses electric expansion valve 8 by throttling, the 1st indoor heat converter 7 moves as condenser, and the 2nd indoor heat converter 9 moves as evaporimeter, utilize the 1st indoor heat converter 7 to heat the room air that utilizes the 2nd indoor heat converter 9 to carry out supercooling and dehumidifying, maybe will utilize room air that the 2nd indoor heat converter 9 carries out supercooling and dehumidifying and utilize the 1st indoor heat converter 7 to carry out indoor air heated to mix and blow out, indoor temperature is slowly risen.
In addition, compressor 3 is driven in rotation by the power supply that comes self frequency-changing (inverter) device 10, the outdoor fan (fan) 11 of screw (propeller) type that is provided with respect to outdoor heat converter 5 is driven in rotation, and the cross-flow indoor fan 12 with respect to 7, the 9 both sides' common land settings of the 1st and the 2nd indoor heat converter is driven in rotation, thereby promotes heat exchange.These converter plants 10, outdoor fan 11 and indoor fan 12 are controlled by the control signal sent of sleep pattern control device 14 of running control loop 13.
In addition, export target temperature and the target humidity that the user sets to sleep pattern control device 14 by remote controller (remote controller) 15.In addition, near the air blow-off outlet of indoor set, be indoor fan 12 be attached with room temperature detector 16 and moisture detector 17, room temperature detection signal and Humidity Detection signal that these detectors send also are output to sleep pattern control device 14.In addition, in the refrigerant inlet portion and the refrigerant outlet portion of the 2nd indoor heat converter 9 heat exchange temperature detector 18,19 is installed respectively, the detected heat exchange temperature detection signal of these detectors also is output respectively to sleep pattern control device 14.
This sleep pattern control device 14 is according to above each detection signal, control by 10 pairs of compressors 3 of converter plant, and outdoor fan 11 and indoor fan 12 are controlled, electric expansion valve 6 is carried out aperture control, and when the heat dehumidifying is turned round again, carry out open and close controlling by 13 pairs of electric expansion valves of running control loop 8.That is to say that air conditioner of the present invention is controlled to: receive above-mentioned each detection signal and be judged as when satisfying certain condition at sleep pattern control device 14, carry out heat dehumidifying running again.
Below, the switching condition that the dehumidifying of being carried out in the present embodiment of heat is again turned round describes.
Fig. 2 is the chart that illustrates that the room temperature when " sleep pattern " of utilizing present embodiment carries out cooling operation changes.
In the example of this " sleep pattern " running, known user is the duration of runs with moment t0～t3, and in addition, target temperature is set at temperature " Ts ".And, this room temperature variation characteristic curve have t0 constantly later on soon indoor temperature from cooling zone that target temperature " Ts " descends (constantly t1～t2) and should back, cooling zone to the intensification zone of t3 indoor temperature rising constantly (moment t2～t3).
The reason that this cooling zone is set be since human after sleeping soon sleep state will become NREM sleep (non-REM sleep), be accompanied by body temperature and descend and the perspiration phenomenon, therefore cooperate this body temperature to descend and room temperature descended.In addition, the reason that the zone of heating up is set is if make room temperature maintain the state that is significantly less than body temperature always, though then human can when initial falling asleep, feeling comfortably cool, yet just may therefore make room temperature approach body temperature gradually and can obtain comfortable sleep afterwards because of waking up the midnight that feels cold gradually.
In the chart of Fig. 2, constantly must reduce temperature significantly with the short period among t0～t2, in addition, be the time band of preparing the physiological status that sleeping user is in fragility (delicate).
Therefore, with the cooling zone that moment t1～t2 descends as indoor temperature, with the intensification zone that moment t2～t3 rises as indoor temperature, the control in this intensification zone switches to immediately when beginning and can suppress the dehumidifying of the heat again running that sharply change takes place indoor humidity.
At this, in the present embodiment, the difference of the target temperature that outdoor temperature and user set when the temperature conditions the when dehumidifying of the heat again running that switches to again heat dehumidifying running from cooling operation is switched began for the running of " sleep pattern " is during smaller or equal to setting or the temperature difference of the regional control that heats up outdoor temperature and target temperature when beginning during smaller or equal to setting.
Compressor operation frequency condition when in addition, heat dehumidifying running is switched again is the output frequency of the output of compressor 3 converter plant 10 when being lower than regulation output level.
Optimal switching condition is when satisfying said temperature condition and frequency condition.
In the present embodiment, concrete regulation this switching condition of heat dehumidifying running again, by under " sleep pattern ", carrying out heat dehumidifying running again, even make that outside air temperature is lower than indoor temperature when night, outside air temperature was low, also can improve the running of indoor temperature constantly and need not switch compressor continually, can suppress indoor humidity in addition and take place sharply to change.
Like this heat dehumidifying running switching condition is again stipulated particularly, by under " sleep pattern ", carrying out heat dehumidifying running again, even make that outside air temperature is lower than indoor temperature when night, outside air temperature was low, also can improve the running of indoor temperature constantly and need not switch compressor continually, can suppress indoor humidity in addition and take place sharply to change.
Below, the action of the air conditioner of present embodiment is described.
The user is with the object time that moment t0～t3 is set at " sleep pattern " by remote controller 15 when sleep, and target temperature Ts at this moment is set at 26 ℃, and target humidity is set at 50%.In addition, usually the target humidity that can set of user is limited to according to the specification of air conditioner manufacturer (manufacturer) in 45～60% the scope.
When moment t0, sleep pattern control device 14 begins to carry out the running of " sleep pattern ", to converter plant 10 output starting orders.Therefore, converter plant 10 is powered to compressor 3, and compressor 3 is driven in rotation, and the gaseous state low-temperature low-pressure refrigerant is compressed and becomes the gaseous state high-temperature high-pressure refrigerant, be sent to kind of refrigeration cycle 2 then, in outdoor heat converter 5 and indoor heat converter 7,9, carry out heat exchange.Then, make the room air cooling, make indoor temperature reduce to 26 ℃ as target temperature by the evaporation of the cold-producing mediums in the indoor heat converter 7,9.In addition, this moment, electric expansion valve 6 was closed to the aperture that common cooling operation is used, and in addition, dehumidifying is all opened with electric expansion valve 8.
When moment t1, the running of " sleep pattern " enters the cooling zone, and indoor temperature reduces gradually.Then, when the moment t2 that conduct is lowered the temperature the regional finish time, for example indoor temperature is reduced to 24.5 ℃.Must reduce temperature significantly with the short period among t0～t2 constantly, in this time band, carry out common cooling operation.
In addition, in the present embodiment, because the temperature conditions when heat dehumidifying running is switched again is defined as " when the difference of outdoor temperature and target temperature was smaller or equal to setting when the control in the zone of heating up began " or " when the operating frequency of compressor was smaller or equal to assigned frequency when the control in the zone of heating up began ", therefore, higher at outside air temperature, when needing sufficient refrigeration duty, also carry out cooling operation in the intensification zone, the uncontrollable situation of room temperature can not take place.
After through moment t2, enter the zone of heating up, room temperature slowly rises.
When the difference of outdoor temperature and target temperature was smaller or equal to setting when the control in the zone of heating up began or the regional control that heats up when the compressor operation frequency is smaller or equal to assigned frequency when beginning, for example, the control model of the dehumidifying of the heat again running when utilizing " sleep pattern " running shown in Figure 3 switches to heat dehumidifying running more immediately after entering the intensification zone.
Heat dehumidifying running is controlled with electric expansion valve 8 electric expansion valve 6 and dehumidifying by the control signal that sleep pattern control device 14 is sent again, makes electric expansion valve 6 open electric expansion valve 8 throttlings.
Thus, in outdoor heat converter 5 and the 1st indoor heat converter 7, be cooled and liquefy through compressor 3 refrigerant compressed, carry out throttling and reduce pressure at electric expansion valve 8, evaporation is cooled off, is dehumidified the room air that carries out heat exchange in the 2nd indoor heat converter 9.In addition, utilize the 1st indoor heat converter 7 to heat the room air that utilizes the 2nd indoor heat converter 9 to carry out supercooling and dehumidifying, maybe will utilize room air that the 2nd indoor heat converter 9 carries out supercooling and dehumidifying and utilize the 1st indoor heat converter 7 to carry out indoor air heated to mix and blow out, indoor temperature is slowly risen.
Like this, the control model of the dehumidifying of the heat again running when " sleep pattern " turned round improves, after entering the intensification zone, switch to heat dehumidifying running more immediately, even make that outside air temperature is lower than indoor temperature when night, outside air temperature was low, also can turn round constantly and need not switch compressor continually, take place sharply to change and realize the comfortable sleep environment thereby can suppress indoor humidity in addition.
In addition, Fig. 4 is that explanation inventors of the present invention are for comparing the chart of the non-known operation mode that carries out.Compare with entering behind the intensification zone through " sleep pattern " running that switches to heat dehumidifying running again from cooling operation again after the stipulated time shown in the comparative example of Fig. 4, present embodiment can suppress indoor humidity to be taken place sharply to change.
Below, the control model of the dehumidifying of the heat again running during to other embodiment of the present invention " sleep pattern " running describes.
In the foregoing description, after the running in cooling zone, switch to the running in the zone of heating up immediately, yet in the present embodiment, be provided with the constant zone of room temperature that in the certain hour of back, cooling zone, indoor temperature is remained unchanged as illustrated in fig. 5, enter the zone of heating up then, when entering the intensification zone, switch to heat dehumidifying running again.
In the present embodiment, when for example under " sleep pattern ", carrying out cooling operation, do not switch to heat dehumidifying running more immediately from the zone that lowers the temperature, but after indoor temperature is remained unchanged, when entering the intensification zone, switch to heat dehumidifying running again.
In the present embodiment,, therefore can realize more comfortable sleep environment owing in entering last the fixing time in zone of heating up, indoor temperature is remained unchanged.
Adopt the air conditioner of various embodiments of the present invention mentioned above,, realize the comfortable sleep environment thereby can suppress rapid variation of indoor humidity generation in addition even also need not switch compressor continually when outside air temperature is low at night.
Claims (3)
1, a kind of air conditioner, comprise: compressor, four-way switching valve, outdoor heat converter, the major loop throttle mechanism, when running dehumidifying is as the 1st indoor heat converter of condenser, when running dehumidifying is as the 2nd indoor heat converter of evaporimeter, and be arranged on dehumidifying throttle mechanism between described the 1st indoor heat converter and described the 2nd indoor heat converter, have and utilize described the 1st indoor heat converter to heat room air, and the dehumidifying of the heat again function of motion of utilizing described the 2nd indoor heat converter to cool off, it is characterized in that
Comprise and controlling so that have room temperature during cooling operation from the cooling zone that target temperature descends and the sleep pattern operation controller in the indoor temperature intensification zone of rising afterwards,
This sleep pattern operation controller has the running switching controls pattern of carrying out cooling operation in the cooling zone, switching to hot dehumidifying running when the control in the zone of heating up begins from cooling operation again.
2, air conditioner as claimed in claim 1, it is characterized in that, described sleep pattern operation controller is in the temperature difference of sleep pattern when beginning running control outdoor temperature and target temperature during smaller or equal to the set point of temperature difference or the temperature difference of the control in the zone of heating up outdoor temperature and target temperature when beginning during smaller or equal to the set point of temperature difference, switches to heat from cooling operation again and dehumidifies and turn round.
3, air conditioner as claimed in claim 1 or 2 is characterized in that, when the operating frequency of compressor was smaller or equal to assigned frequency when the control of described sleep pattern operation controller in the zone of heating up began, switches to heat dehumidifying running again from cooling operation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005324433 | 2005-11-09 | ||
| JP2005324433A JP4668769B2 (en) | 2005-11-09 | 2005-11-09 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1963324A true CN1963324A (en) | 2007-05-16 |
| CN100485281C CN100485281C (en) | 2009-05-06 |
Family
ID=38082473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101464615A Expired - Fee Related CN100485281C (en) | 2005-11-09 | 2006-11-09 | Air conditioner |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4668769B2 (en) |
| CN (1) | CN100485281C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813356A (en) * | 2010-03-09 | 2010-08-25 | 海信科龙电器股份有限公司 | Sleep running control method for air conditioner |
| CN102506488A (en) * | 2011-10-20 | 2012-06-20 | 广东美的电器股份有限公司 | Control method of air conditioner dehumidification mode control device |
| CN101464026B (en) * | 2007-12-21 | 2012-10-10 | Lg电子株式会社 | Air conditioning system |
| CN105190195A (en) * | 2013-04-25 | 2015-12-23 | 株式会社东芝 | Air conditioner |
| CN107883524A (en) * | 2017-10-19 | 2018-04-06 | 广东美的制冷设备有限公司 | Air conditioner energy-saving temperature control method, air conditioner and storage medium |
| CN113587382A (en) * | 2021-07-07 | 2021-11-02 | 青岛海信日立空调系统有限公司 | Control method and device of air conditioner |
| CN114151943A (en) * | 2021-12-06 | 2022-03-08 | 珠海格力电器股份有限公司 | Dehumidification control method and device for air conditioner, storage medium and air conditioner |
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| JP5463637B2 (en) * | 2008-09-05 | 2014-04-09 | ダイキン工業株式会社 | Air conditioning control system |
| CN102287892A (en) * | 2011-07-11 | 2011-12-21 | 熊伟鸿 | Air conditioner conforming to human engineering and temperature-regulating method |
| WO2017173596A1 (en) * | 2016-04-06 | 2017-10-12 | 吴鹏 | Air conditioning temperature control method and system |
| EP3505838A4 (en) * | 2016-08-25 | 2019-10-23 | Mitsubishi Electric Corporation | Air conditioning device, air conditioning method, and program |
| JP7390594B2 (en) | 2018-12-19 | 2023-12-04 | パナソニックＩｐマネジメント株式会社 | Information processing method and information processing device |
| EP4269897A4 (en) | 2020-12-28 | 2024-03-06 | Mitsubishi Electric Corp | Air conditioner and indoor unit |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3185791B2 (en) * | 1999-07-09 | 2001-07-11 | 松下電器産業株式会社 | Control device for air conditioner |
| JP2001091011A (en) * | 1999-09-24 | 2001-04-06 | Hitachi Ltd | Air conditioner |
| JP3997127B2 (en) * | 2002-08-29 | 2007-10-24 | 東芝キヤリア株式会社 | Air conditioner |
| JP3999608B2 (en) * | 2002-09-03 | 2007-10-31 | 東芝キヤリア株式会社 | Air conditioner |
| JP2004101154A (en) * | 2002-09-13 | 2004-04-02 | Mitsubishi Electric Corp | Air-conditioner operating method, and air-conditioner |
| JP4228974B2 (en) * | 2004-04-08 | 2009-02-25 | ダイキン工業株式会社 | Environmental temperature controller |
-
2005
- 2005-11-09 JP JP2005324433A patent/JP4668769B2/en not_active Expired - Fee Related
-
2006
- 2006-11-09 CN CNB2006101464615A patent/CN100485281C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101464026B (en) * | 2007-12-21 | 2012-10-10 | Lg电子株式会社 | Air conditioning system |
| CN101813356A (en) * | 2010-03-09 | 2010-08-25 | 海信科龙电器股份有限公司 | Sleep running control method for air conditioner |
| CN102506488A (en) * | 2011-10-20 | 2012-06-20 | 广东美的电器股份有限公司 | Control method of air conditioner dehumidification mode control device |
| CN102506488B (en) * | 2011-10-20 | 2014-01-22 | 美的集团股份有限公司 | Control method of air conditioner dehumidification mode control device |
| CN105190195A (en) * | 2013-04-25 | 2015-12-23 | 株式会社东芝 | Air conditioner |
| CN105190195B (en) * | 2013-04-25 | 2017-09-08 | 东芝生活电器株式会社 | Air conditioner |
| CN107883524A (en) * | 2017-10-19 | 2018-04-06 | 广东美的制冷设备有限公司 | Air conditioner energy-saving temperature control method, air conditioner and storage medium |
| CN107883524B (en) * | 2017-10-19 | 2020-05-22 | 广东美的制冷设备有限公司 | Energy-saving temperature control method for air conditioner, air conditioner and storage medium |
| CN113587382A (en) * | 2021-07-07 | 2021-11-02 | 青岛海信日立空调系统有限公司 | Control method and device of air conditioner |
| WO2023279667A1 (en) * | 2021-07-07 | 2023-01-12 | 青岛海信日立空调系统有限公司 | Air conditioner control method and apparatus |
| CN114151943A (en) * | 2021-12-06 | 2022-03-08 | 珠海格力电器股份有限公司 | Dehumidification control method and device for air conditioner, storage medium and air conditioner |
| CN114151943B (en) * | 2021-12-06 | 2022-10-28 | 珠海格力电器股份有限公司 | Dehumidification control method and device of air conditioner, storage medium and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100485281C (en) | 2009-05-06 |
| JP2007132560A (en) | 2007-05-31 |
| JP4668769B2 (en) | 2011-04-13 |
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