CN105318420B - The control method of air-conditioning system and air-conditioning system - Google Patents
The control method of air-conditioning system and air-conditioning system Download PDFInfo
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Abstract
The invention discloses a kind of air-conditioning system and the control method of air-conditioning system, air-conditioning system includes：Outdoor unit, outdoor unit are equipped with the outdoor mainboard of control outdoor unit output；And multiple indoor units, multiple indoor units are connected respectively with outdoor unit, each indoor unit is respectively equipped with indoor mainboard and the detector unit being connected with indoor mainboard, detector unit is located at the inlet of indoor unit to detect the inlet temperature of indoor unit, and indoor mainboard is connected with outdoor mainboard and inlet temperature is transmitted to outdoor mainboard.Air-conditioning system according to embodiments of the present invention, by the inlet that detector unit is located to indoor unit, and it is connected with outdoor mainboard, detector unit can detect the inlet temperature of indoor unit, since inlet temperature is close or equal to evaporating temperature, outdoor mainboard can control outdoor unit to export by detecting inlet temperature, and then control evaporating temperature exactly, control cost is relatively low, and the operation of outdoor unit can need to can obtain preferable control.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, more particularly, to the control of a kind of air-conditioning system and air-conditioning system
Method.
Background technology
Multi-connected machine product is typically that one or more outdoor units correspond to multiple indoor units, is just had in actual moving process
Outdoor unit export with open indoor unit operation quantity correspondence need to handle, then outdoor unit operation can need to control just into
For key technology.
Solve can the method that need to control it is general there are two types of.The first：Outdoor unit installs low-pressure sensor, and outdoor unit leads to
Low pressure value is crossed to draw the evaporating temperature of system, so as to by adjusting the output of outdoor unit come control system evaporating temperature；
Second：The temperature sensing package of machine indoor heat exchanger outlet port installation indoors, by adjusting the output of outdoor unit come control system
Indoor heat exchanger outlet temperature.
There are shortcoming, the structures and control method of air-conditioning system to be further improved for both of which.
The content of the invention
It is contemplated that it solves at least some of the technical problems in related technologies.For this purpose, the present invention
One purpose is to propose a kind of air-conditioning system, and the air-conditioning system can accurately control evaporating temperature, control process it is simple and can
It leans on.
It is another object of the present invention to propose a kind of control method of air-conditioning system.
Air-conditioning system according to embodiments of the present invention, including：Outdoor unit, the outdoor unit, which is equipped with, controls the outdoor unit defeated
The outdoor mainboard gone out；And multiple indoor units, multiple indoor units are connected respectively with the outdoor unit, each interior
Machine is respectively equipped with indoor mainboard and the detector unit being connected with the indoor mainboard, the detector unit are set
In the inlet of the indoor unit to detect the inlet temperature of the indoor unit, the interior mainboard and the outdoor mainboard
It is connected and the inlet temperature is transmitted to the outdoor mainboard.
Air-conditioning system according to embodiments of the present invention, by the way that detector unit to be located to the inlet of indoor unit, and will
Detector unit is connected with indoor mainboard, and indoor mainboard is connected with outdoor mainboard, and detector unit can detect room
The inlet temperature of interior machine, and inlet temperature can be transmitted to outdoor mainboard by indoor mainboard, outdoor mainboard can basis
Inlet temperature controls the output of outdoor unit accordingly, and then the inlet temperature of indoor unit is enable to adjust；Due to entering for indoor unit
Mouth temperature is close or equal to the evaporating temperature of indoor unit, and therefore, outdoor mainboard can be by controlling the output of outdoor unit exactly
The evaporating temperature of indoor unit is controlled, control action is preferable, and control cost is relatively low, and the operation of outdoor unit can need to can obtain preferably
Control.
In addition, air-conditioning system according to the above embodiment of the present invention can also have following additional technical characteristic：
According to one embodiment of present invention, the detector unit is temperature sensor.
According to one embodiment of present invention, each indoor unit includes respectively：Indoor heat exchanger；And distributor,
The distributor is connected with the indoor heat exchanger, and the detector unit is located at the distributor with the indoor mainboard
Between the indoor heat exchanger.
According to one embodiment of present invention, the distributor passes through a plurality of shunting capillary and the indoor heat exchanger phase
Even.
According to one embodiment of present invention, the detector unit is located on a shunting capillary, described
Indoor mainboard is connected by communication line with the detector unit.
According to one embodiment of present invention, connect between multiple indoor mainboards of multiple indoor units phase
Even, communication line phase is passed through between multiple indoor mainboards and between the indoor mainboard and the outdoor mainboard
Even.
According to one embodiment of present invention, the outdoor unit includes：Outdoor heat exchanger, the outdoor heat exchanger with it is multiple
The entrance of the indoor unit is connected；Outdoor fan, the outdoor fan are connected with the outdoor heat exchanger；And compressor and low
Tank is pressed, the compressor is connected in parallel with the low-pressure tank, and is located at going out for the outdoor heat exchanger and multiple indoor units
Between mouthful.
The control method of air-conditioning system according to embodiments of the present invention, comprises the following steps：
S1：Multiple indoor units are opened after receiving starting-up signal；
S2：Detector unit on multiple indoor units detects the inlet temperature T of multiple indoor units, multiple entrance temperature respectively
Degree T is transmitted to outdoor mainboard by multiple indoor mainboards；
S3：Outdoor mainboard calculates average value to multiple inlet temperature T, obtains evaporating temperature Te；
S4：Outdoor mainboard compares evaporating temperature Te and optimal evaporation temperature upper limit a and optimal evaporation lowest temperature b
Relatively and judge size, as b≤Te≤a, outdoor unit normal operation；
As Te ＞ a, the outer machine output upshift operation of outdoor mainboard control room, and repeat step S2-S4 to b≤Te≤a；
As Te ＜ b, the outer machine output downshift operation of outdoor mainboard control room, and repeat step S2-S4 to b≤Te≤a.
According to one embodiment of present invention, a=b.
Description of the drawings
Fig. 1 is the part-structure schematic diagram of air-conditioning system according to embodiments of the present invention；
Fig. 2 is the part-structure schematic diagram of the indoor unit of air-conditioning system according to embodiments of the present invention；
Fig. 3 is the flow chart of the control method of air-conditioning system according to embodiments of the present invention.
Reference numeral：
Air-conditioning system 100；
Outdoor unit 10；Outdoor heat exchanger 11；Outdoor mainboard 12；Compressor 13；Low-pressure tank 14；Outdoor fan 15；
Indoor unit 20；Indoor heat exchanger 21；Indoor mainboard 22；Detector unit 23；Distributor 24；Indoor fan
25；Shunt capillary 26.
Communication line 30.
Specific embodiment
The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or has the function of same or like element.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that term " " center ", " on ", " under ", "front", "rear", " left side ",
The orientation or position relationship of the instructions such as " right side ", " interior ", " outer " are based on orientation shown in the drawings or position relationship, merely to just
In the description present invention and simplify description rather than instruction or imply signified device or element must have specific orientation, with
Specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the present invention, " multiple " are meant that two or more,
Unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be that machinery connects
It connects or is electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Air-conditioning system 100 according to embodiments of the present invention is described in detail below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, air-conditioning system 100 according to embodiments of the present invention includes outdoor unit 10 and multiple interiors
Machine 20.Outdoor unit 10 is equipped with outdoor mainboard 12, and outdoor mainboard 12 can control outdoor unit 10 to export.Multiple indoor units 20 are distinguished
It is connected with outdoor unit 10, each indoor unit 20 is respectively equipped with indoor mainboard 22 and detector unit 23, detector unit
23 are connected with indoor mainboard 22.Detector unit 23 is located at the inlet of indoor unit 20 to detect the entrance temperature of indoor unit 20
Degree, indoor mainboard 22 is connected with outdoor mainboard 12, and inlet temperature is transmitted to outdoor mainboard 12.
Air-conditioning system 100 according to embodiments of the present invention, by the entrance that detector unit 23 is located to indoor unit 20
Place, and detector unit 23 is connected with indoor mainboard 22, indoor mainboard 22 is connected with outdoor mainboard 12, temperature inspection
It surveys element 23 and can detect the inlet temperature of indoor unit 20, and inlet temperature can be transmitted to outdoor owner by indoor mainboard 22
Plate 12, outdoor mainboard 12 can control the output of outdoor unit 10 accordingly according to inlet temperature, and then make the entrance of indoor unit 20
Temperature is adjusted.
Since the inlet temperature of indoor unit 20 is close or equal to the evaporating temperature of indoor unit 20, outdoor mainboard 12
Can be by the way that the output of outdoor unit 10 be controlled to control the evaporating temperature of indoor unit 20 exactly, control action is preferable, and control cost
Relatively low, the operation of outdoor unit 10 can need preferably to be controlled.
The adjusting of the evaporating temperature of indoor unit 20 is usually controlled by the output of outdoor unit 10, and outdoor unit 10 is controlled to transport
There are two types of the control method that can be needed of going is general.The first is：Outdoor unit installs low-pressure sensor, and outdoor unit passes through low pressure pressure
Low pressure value that force snesor detects draws the evaporating temperature of system, so as to be controlled by adjusting the output of outdoor unit
The evaporating temperature of system；It is for second：Temperature sensing package is installed on the outlet port of the indoor heat exchanger of machine indoors, passes through regulation room
The output of outer machine comes the indoor heat exchanger outlet temperature of control system, and then the evaporating temperature of control system.
In first method, the use of low-pressure sensor makes the control accuracy of outdoor unit high, can make system
Reach optimal operational effect, but cost is excessively high.In second method, using temperature sensing package detection temperature, cost is relatively low, but due to
The outlet temperature of indoor heat exchanger is in overheated zone, and direct logical relation can not be established between the evaporating temperature of system, because
This, can be there are certain deviation between outlet temperature and evaporating temperature, and the control accuracy of outdoor unit is poor, can not make system operation
To optimum state point.
And air-conditioning system 100 according to embodiments of the present invention, by the way that detector unit 23 is located at entering for indoor unit 20
At mouthful, detector unit 23 can detect the inlet temperature of evaporator.Since the inlet temperature of evaporator is close or equal to evaporation
Temperature, therefore, detector unit 23 can be reached by detecting inlet temperature detects the evaporating temperature of indoor unit 20 exactly
Effect, make outdoor unit 10 preferable to evaporating temperature control action, outdoor unit 10 can be exported accurately, can need to control.Meanwhile temperature
Spend the advantage of lower cost of detecting element 23, be greatly improved while cost is reduced the energy of outdoor unit 10 need to control it is accurate
Property, air-conditioning system 100 is made to can reach optimal operating status.
The structure of detector unit 23 can there are many, for example, detector unit 23 can be temperature sensor.Temperature passes
Sensor can accurately detect the inlet temperature of indoor unit 20, and then obtain accurate evaporating temperature, improve outdoor unit 10 and control
Accuracy.
As shown in Figure 1, each indoor unit 20 may include indoor heat exchanger 21 and distributor 24 respectively.Distributor 24 and room
Interior heat exchanger 21 is connected, and detector unit 23 is connected with indoor mainboard 22, detector unit 23 be located at distributor 24 and
Between indoor heat exchanger 21.Each indoor unit 20 may also include indoor fan 25, and indoor fan 25 is connected with indoor heat exchanger 21.
Wherein, the connection mode of distributor 24 and indoor heat exchanger 21 can there are many, optionally, distributor 24 can be by more
Item shunting capillary 26 is connected with indoor heat exchanger 21.For example, distributor 24 passes through four shunting capillaries 26 and indoor heat exchange
Device 21 is connected.Detector unit 23 may be provided on a shunting capillary 26 of inlet.Detector unit 23 can as a result,
The inlet temperature of indoor unit 20 is detected exactly, and then accurately obtains the evaporating temperature of indoor unit 20, is the standard of outdoor unit 10
Really output lays the foundation.
Indoor mainboard 22 can be connected by communication line 30 with detector unit 23.Detector unit 23 as a result,
The inlet temperature of detection can be convenient by communication line 30 and be reliably transmitted to indoor mainboard 22.It can on each indoor unit 20
If there are one indoor mainboard 22, can be connected in series between multiple indoor mainboards 22 on multiple indoor units 20, and simultaneously with
Outdoor mainboard 12 is connected.It can be connected between multiple interior mainboards 22 by communication line 30, indoor mainboard 22 and outdoor
It can be connected between mainboard 12 by communication line 30.The inlet temperature that indoor mainboard 22 obtains can pass through 30 side of communication line
Just and reliably it is transmitted to outdoor mainboard 12.
Outdoor unit 10 may include outdoor heat exchanger 11, outdoor fan 15 and compressor 13 and low-pressure tank 14.Outdoor heat exchange
Device 11 is connected with the entrance of multiple indoor units 20, and outdoor fan 15 is connected with outdoor heat exchanger 11.Compressor 13 and low-pressure tank 14
It is located at being connected in parallel between the entrance of outdoor heat exchanger 11 and outdoor unit 10, the entrance of outdoor unit 10 and multiple indoor units 20
Outlet is connected, and compressor 13 and low-pressure tank are equipped between the outlet of multiple indoor units 20 and 10 heat exchanger of outdoor unit of outdoor unit 10
14。
The control method of air-conditioning system 100 according to embodiments of the present invention is described in detail below in conjunction with the accompanying drawings.
As shown in figure 3, the control method of the air-conditioning system 100 mainly includes the following steps that：
S1：Multiple indoor units 20 are opened after receiving starting-up signal.It is understood that when indoor unit 20 has multiple, it can
The indoor unit 20 of different number is according to circumstances opened, starting-up signal can be sent to the indoor unit 20 that needs are opened.
S2：Detector unit 23 on multiple indoor units 20 detects the inlet temperature T of multiple indoor units 20 respectively, multiple
Inlet temperature T is transmitted to multiple corresponding indoor mainboards 22 by communication line 30, then is transmitted to room by communication line 30
Outer mainboard 12.
S3：After outdoor mainboard 12 receives the inlet temperature T of the indoor unit 20 of all starts, to multiple inlet temperature T
Arithmetic average calculating is carried out, obtains the average value of inlet temperature T, and can be as the evaporation of the indoor unit 20 measured using the average value
Temperature Te.
S4：Outdoor mainboard 12 carries out evaporating temperature Te and optimal evaporation temperature upper limit a and optimal evaporation lowest temperature b
Compare and judge size.As b≤Te≤a, 10 normal operation of outdoor unit, the output of outdoor unit 10 is optimum state point, without
It is adjusted；As Te ＞ a, outdoor unit 10 exports less than normal, and outdoor mainboard 12 controls the output upshift operation of outdoor unit 10, lays equal stress on
Multiple step S2-S4, until b≤Te≤a；As Te ＜ b, outdoor unit 10 exports less than normal, the outdoor control of mainboard 12 outdoor unit 10
Output downshift operation, and step S2-S4 is repeated, until b≤Te≤a.
That is, outdoor mainboard 12 is by judging evaporating temperature Te and optimal evaporation temperature upper limit a and optimal evaporation
Magnitude relationship between lowest temperature b obtains the output size situation of outdoor unit 10, outdoor when the output of outdoor unit 10 is less than normal
Mainboard 12 makes the output of outdoor unit 10 rise one grade, then judges whether the output of outdoor unit 10 at this time is located at optimal shape again
State when the output of outdoor unit 10 is still less than normal, then rises one grade to the output of outdoor unit 10 again, and judges again, until
Reach optimum state.
When the output of outdoor unit 10 is bigger than normal, outdoor mainboard 12 makes the output of outdoor unit 10 decline one grade, then again
Judge whether the output of outdoor unit 10 at this time is located at optimum state, when the output of outdoor unit 10 is still bigger than normal, then again to room
The output of outer machine 10 declines one grade, and judges again, until reaching optimum state；When outdoor unit 10 is exported in optimum state,
The output of outdoor unit 10 is not adjusted.
When a and b are unequal, what air-conditioning system 100 can be stablized exports in the range of an optimum state, reduces room
The adjusting number of outer machine 10, air-conditioning system 100 are run more steady.Certainly, when without considering the stability of system, a and b can be same
One value, the output of air-conditioning system 100 can constantly be fluctuated up and down in the value.
Assuming that indoor unit 20 there are four the connections of air-conditioning system 100, wherein, there are four the indoor units 20 of unlatching.Below using a as
8 degree, the operational process of air-conditioning system 100 is described in detail in b exemplified by being 7 degree.
First, four indoor units 20 receive starting-up signal and start shooting.Detector unit 23 on four indoor units 20
The inlet temperature T of respective chambers machine 20 is detected respectively, obtains four inlet temperature T, is respectively 8,7,8 and 10 degree, four entrances
Temperature is transmitted to corresponding indoor mainboard 22 by communication line 30 respectively, and four indoor mainboards 22 pass through communication line 30
Respective inlet temperature T is transmitted to outdoor mainboard 12.
After outdoor mainboard 12 receives four inlet temperature T, logical calculated is carried out, obtains the flat of four inlet temperature T
Average TIt is averageFor=(8+7+8+10)/4=8.25, and by the bright evaporating temperature Te for replacing with indoor unit 20 of the average value lamp, i.e. Te
=8.25.Then by Te compared with a and b, due to 8.25 ＞ 8, i.e. Te ＞ a, the output of outdoor unit 10 needs to rise one grade, room
After the outer upshift of machine 10 is completed, detector unit 23 detects inlet temperature T again, and outdoor mainboard 12 receives inlet temperature T
Afterwards, logical calculated is carried out again, and compared with upper limit value a and lower limiting value b.When Te is more than a, then need to make outdoor again
The output of machine 10 rises one grade；When Te is less than b, then need that the output of outdoor unit 10 is made to reduce by one grade；It so adjusts repeatedly, until b
≤ Te≤a, i.e. outdoor unit 10 output reach optimum state.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms is not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It is combined in an appropriate manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the different embodiments described in this specification or example and different embodiments or exemplary feature
It closes and combines.
Although the embodiment of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (9)
1. a kind of air-conditioning system, which is characterized in that including：
Outdoor unit, the outdoor unit are equipped with the outdoor mainboard for controlling the outdoor unit output；And
Multiple indoor units, multiple indoor units are connected respectively with the outdoor unit, and each indoor unit is respectively equipped with interior
Mainboard and the detector unit being connected with the indoor mainboard, the detector unit are located at the indoor unit
Inlet to detect the inlet temperature of the indoor unit, the interior mainboard be connected with the outdoor mainboard and by it is described enter
Mouth temperature is transmitted to the outdoor mainboard, and the control method of the air-conditioning system comprises the following steps：
S1：Multiple indoor units are opened after receiving starting-up signal；
S2：Detector unit on multiple indoor units detects the inlet temperature T, multiple inlet temperature T of multiple indoor units respectively
Outdoor mainboard is transmitted to by multiple indoor mainboards；
S3：Outdoor mainboard calculates average value to multiple inlet temperature T, obtains evaporating temperature Te；
S4：Outdoor mainboard by evaporating temperature Te compared with optimal evaporation temperature upper limit a and optimal evaporation lowest temperature b simultaneously
Judge size, as b≤Te≤a, outdoor unit normal operation；
As Te ＞ a, the outer machine output upshift operation of outdoor mainboard control room, and repeat step S2-S4 to b≤Te≤a；
As Te ＜ b, the outer machine output downshift operation of outdoor mainboard control room, and repeat step S2-S4 to b≤Te≤a.
2. air-conditioning system according to claim 1, which is characterized in that the detector unit is temperature sensor.
3. air-conditioning system according to claim 1, which is characterized in that each indoor unit includes respectively：
Indoor heat exchanger；And
Distributor, the distributor are connected with the indoor heat exchanger, and the detector unit is set with the indoor mainboard
Between the distributor and the indoor heat exchanger.
4. air-conditioning system according to claim 3, which is characterized in that the distributor passes through multiple shunting capillaries and institute
Indoor heat exchanger is stated to be connected.
5. air-conditioning system according to claim 4, which is characterized in that the detector unit is located at a shunting
On capillary, the interior mainboard is connected by communication line with the detector unit.
6. air-conditioning system according to claim 1, which is characterized in that multiple indoor owners of multiple indoor units
It is connected in series between plate, leads between multiple indoor mainboards and between the indoor mainboard and the outdoor mainboard
Communication line is crossed to be connected.
7. air-conditioning system according to claim 1, which is characterized in that the outdoor unit includes：
Outdoor heat exchanger, the outdoor heat exchanger are connected with the entrance of multiple indoor units；
Outdoor fan, the outdoor fan are connected with the outdoor heat exchanger；And
Compressor and low-pressure tank, the compressor are connected in parallel with the low-pressure tank, and be located at the outdoor heat exchanger with it is multiple
Between the outlet of the indoor unit.
8. a kind of control method of air-conditioning system, which is characterized in that comprise the following steps：
S1：Multiple indoor units are opened after receiving starting-up signal；
S2：Detector unit on multiple indoor units detects the inlet temperature T, multiple inlet temperature T of multiple indoor units respectively
Outdoor mainboard is transmitted to by multiple indoor mainboards；
S3：Outdoor mainboard calculates average value to multiple inlet temperature T, obtains evaporating temperature Te；
S4：Outdoor mainboard by evaporating temperature Te compared with optimal evaporation temperature upper limit a and optimal evaporation lowest temperature b simultaneously
Judge size, as b≤Te≤a, outdoor unit normal operation；
As Te ＞ a, the outer machine output upshift operation of outdoor mainboard control room, and repeat step S2-S4 to b≤Te≤a；
As Te ＜ b, the outer machine output downshift operation of outdoor mainboard control room, and repeat step S2-S4 to b≤Te≤a.
9. the control method of air-conditioning system according to claim 8, which is characterized in that a=b.
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| CN106440198B (en) * | 2016-09-26 | 2019-07-26 | 广东美的暖通设备有限公司 | The detection method of the throttle valve body of the indoor unit of air-conditioning system |
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| CN101093096A (en) * | 2006-06-23 | 2007-12-26 | 乐金电子(天津)电器有限公司 | An air conditioner, and control method |
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| CN103528163A (en) * | 2012-07-03 | 2014-01-22 | 三星电子株式会社 | Diagnosis control method for an air conditioner |
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| KR19990042964A (en) * | 1997-11-28 | 1999-06-15 | 윤종용 | Heating controller and method of air conditioner |
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| CN1690552A (en) * | 2004-04-28 | 2005-11-02 | 乐金电子(天津)电器有限公司 | Cooling agent temperature control system for air-conditioners and control method thereof |
| CN101093096A (en) * | 2006-06-23 | 2007-12-26 | 乐金电子(天津)电器有限公司 | An air conditioner, and control method |
| EP2428752A2 (en) * | 2010-09-09 | 2012-03-14 | Panasonic Corporation | Air conditioner |
| CN102032648A (en) * | 2010-12-07 | 2011-04-27 | 海信（山东）空调有限公司 | Refrigerant flow control method for multi-connected air-conditioning system during heating |
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