CN106765885B - Duplex cylinder compressor air conditioner and its refrigerating method - Google Patents
Duplex cylinder compressor air conditioner and its refrigerating method Download PDFInfo
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- CN106765885B CN106765885B CN201611073526.8A CN201611073526A CN106765885B CN 106765885 B CN106765885 B CN 106765885B CN 201611073526 A CN201611073526 A CN 201611073526A CN 106765885 B CN106765885 B CN 106765885B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
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Abstract
The present invention relates to duplex cylinder compressor air conditioner refrigeration technology field, a kind of duplex cylinder compressor air conditioner and its refrigerating method are provided.The air conditioner includes duplex cylinder compressor, switch unit, the temperature detecting unit for detecting outdoor environment temperature and the current detecting unit for detecting principal current; in refrigeration; according to the state of outdoor environment temperature; enable compressor with single cylinder mode or twin-tub mode elder generation trial operation; further pass through the principal current including compressor current that can embody air conditioner complete machine current status again; further to adjust the operational mode of compressor; there is the probability that protection is shut down so as to which air conditioner is greatly reduced; and system pressure can also be reduced in operation, reduce system loading.
Description
Technical field
The present invention relates to duplex cylinder compressor air conditioner refrigeration technology fields, specifically provide a kind of duplex cylinder compressor air conditioner
And its refrigerating method.
Background technique
Current twin-tub variable capacity air conditioner generally uses single cylinder mode operation when environment temperature is lower, and in temperature
When slightly higher, use twin-tub mode operation to increase system loading；But when outside temperature is extra high, under twin-tub mode
Air conditioner will appear the excessively high protection of complete machine electric current, need traditional twin-tub mode being converted to single cylinder mode at this moment, to subtract
Mini system pressure reduces system loading.
Summary of the invention
(1) technical problems to be solved
The object of the present invention is to provide a kind of air conditioners that can reduce the probability that protection is shut down occurs, and can also run
Middle reduction system pressure reduces the duplex cylinder compressor air conditioner and its refrigerating method of system loading.
(2) technical solution
To achieve the above object, the present invention provides a kind of duplex cylinder compressor air conditioner, which includes twin-tub compression
Machine, switch unit, the temperature detecting unit for detecting outdoor environment temperature and the current detecting unit for detecting principal current,
The principal current includes duplex cylinder compressor electric current；The switch unit is used for the room according to detected by the temperature detecting unit
Principal current detected by external environment temperature and the current detecting unit runs mould to control the duplex cylinder compressor in twin-tub
Switch between formula and single cylinder operational mode.
Preferably, the principal current is the complete machine electric current of air conditioner.
The present invention also provides a kind of refrigerating methods of duplex cylinder compressor air conditioner, method includes the following steps:
S0, refrigeration mode booting operation, execute step S1；
S1, judge whether outdoor environment temperature T is greater than the first temperature threshold TS1, if so, S2 is thened follow the steps, if it is not, then
Execute step S3；
S2, compressor are with the second preset duration of single cylinder mode operation t2Step S4 is executed afterwards；
S3, compressor are with twin-tub mode operation third preset duration t3Step S5 is executed afterwards；
S4, judge whether current principal current I is greater than the first current threshold IS1, if so, S8 is thened follow the steps, if it is not, then holding
Row step S6；
S5, judge whether current principal current I is greater than the first current threshold IS1, if so, S2 is thened follow the steps, if it is not, then holding
Row step S7；
S6, compressor execute step S4 with single cylinder mode operation；
S7, compressor execute step S5 with twin-tub mode operation；
S8, the first preset duration of compressor shutdown t1Step S0 is executed afterwards；
Wherein, the principal current I includes duplex cylinder compressor electric current.
Preferably, the second preset duration t2It is 0~5 minute.
Preferably, the second preset duration t2It is 1 minute.
Preferably, the third preset duration t2It is 0~5 minute.
Preferably, the third preset duration t3It is 1 minute.
Preferably, the first temperature threshold TS1It is 30~70 DEG C.
Preferably, the first temperature threshold TS1It is 50 DEG C.
Preferably, in step S1 to further comprising the steps of between step S2:
S10, judge whether outdoor environment temperature value T is greater than second temperature threshold value TS2, if so, S2 is thened follow the steps, if it is not,
Then follow the steps S11；
S11, compressor execute step S1 with single cylinder mode operation；
Wherein, TS2Less than TS1。
Preferably, in step S4 to further comprising the steps of between step S6:
S9, judge whether current principal current is greater than the second current threshold IS2, if so, S6 is thened follow the steps, if it is not, then executing
Step S3；
Wherein, IS2Less than IS1。
(3) beneficial effect
A kind of duplex cylinder compressor air conditioner and its refrigerating method provided by the invention, by the state of outdoor environment temperature,
Enable compressor with single cylinder mode or twin-tub mode elder generation trial operation, further again by the way that air conditioner complete machine current status can be embodied
Principal current including compressor current occurs further to adjust the operational mode of compressor so as to which air conditioner is greatly reduced
The probability shut down is protected, and system pressure can also be reduced in operation, reduces system loading.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of duplex cylinder compressor air conditioner of the embodiment of the present invention；
Fig. 2 is a kind of schematic diagram of the refrigerating method of duplex cylinder compressor air conditioner of the embodiment of the present invention one；
Fig. 3 is a kind of schematic diagram of the refrigerating method of duplex cylinder compressor air conditioner of the embodiment of the present invention two；
Fig. 4 is a kind of schematic diagram of the refrigerating method of duplex cylinder compressor air conditioner of the embodiment of the present invention three.
Appended drawing reference:
1, duplex cylinder compressor；2, four-way valve；3, condenser；4, throttle part；5, evaporator；6, switch；7, controller；
8, temperature detecting unit；9, current detecting unit.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
Embodiment one
As shown in Figure 1,1 air conditioner of a kind of duplex cylinder compressor provided by the invention, including by compressor, four-way valve 2, condensation
The changes in temperature double mode air-conditioning system of the compositions such as device 3, throttle part 4 and evaporator 5.Specifically, condenser 3,4 and of throttle part
Evaporator 5 is sequentially connected in series in coolant path, and the arrival end of compressor and outlet end connect with two interfaces of four-way valve 2 respectively
It is logical, and the both ends of the coolant path respectively with other two orifice of four-way valve 2, wherein four-way valve 2 is for making refrigerant
Access and compressor switch between positive on-state and reversed on-state, to realize the system of air-conditioning system respectively
Cold mode and heating mode.
Wherein, the compressor of the embodiment of the present invention is duplex cylinder compressor 1, and there are two compressions in parallel for the tool of duplex cylinder compressor 1
Cylinder, two compression cylinders respectively have individual gas returning port and share a gas outlet；1 property of can choose of duplex cylinder compressor with list
Refrigerating efficiency can be improved in cylinder mode and twin-tub mode operation, under suitable condition, starting twin-tub mode operation.
In addition, the embodiment of the invention also includes switch units, 8 and of temperature detecting unit for detecting outdoor environment temperature
For detecting the current detecting unit 9 of principal current, switch unit specifically may include switch 6 and controller 7, duplex cylinder compressor 1
Two gas returning ports be connected to the corresponding interface of four-way valve 2 by switch 6；Controller 7 respectively with duplex cylinder compressor 1 and switching
6 signal of device connection, for controlling duplex cylinder compressor 1 with single cylinder mode operation or twin-tub mode operation and control accordingly is double
The on-off of two gas returning ports of cylinder compressor 1.
Temperature detecting unit 8 and current detecting unit 9 are connect with controller 7 respectively, and switch unit according to temperature for examining
Principal current detected by outdoor environment temperature detected by unit 8 and current detecting unit 9 is surveyed to control duplex cylinder compressor 1
Switch between twin-tub operational mode and single cylinder operational mode.
In refrigeration, outdoor environment temperature is to determine duplex cylinder compressor 1 with single cylinder mode operation or with twin-tub mode fortune
A capable essential condition, because outdoor condenser 3 needs to radiate, and the outdoor environment of lower temperature is lucky in refrigeration
Be conducive to the heat dissipation of condenser 3, so, the considerations of comprehensive refrigerating efficiency and energy consumption, only duplex cylinder compressor 1 need to be made with single cylinder at this time
Mode operation, it can good refrigerating efficiency is obtained with lower energy consumption；And when outdoor environment temperature is higher, condenser 3
Radiating efficiency reduce, be at this time to guarantee refrigerating efficiency, it is necessary to compressor start twin-tub mode operation, at this point, compressor is double
Cylinder mode operation will increase energy consumption, i.e. the electric current of system can increase, but still within the range of permission；But work as outdoor environment temperature
When excessively high, if duplex cylinder compressor 1 can make system power excessively high, air conditioner will appear complete machine still with twin-tub mode operation
Twin-tub mode is converted to single cylinder mode so can only sacrifice refrigerating efficiency at this time by the excessively high protection of electric current, to reduce system pressure
Power reduces system loading.
From the foregoing, it will be observed that be not only based on outdoor environment temperature when determining the operational mode of duplex cylinder compressor 1, also to examine
The complete machine current conditions of air conditioner are considered, further to control the operating status of compressor.And detected by current detecting unit 9
So-called principal current is a current value for including 1 electric current of duplex cylinder compressor, because compressor is the main power consumption portion of air-conditioning system
Part, such as the complete machine electric current of general air conditioner is 10A, wherein the power consumption of compressor accounts for 9A or more, and the power consumption of remaining part is comprehensive
Conjunction is added up less than 1A；Moreover, compressor is also the maximum component of curent change, remaining part electric current is low and variation is small.
Therefore, the complete machine power consumption condition of air-conditioning system, certainly, the main electricity can be embodied by including at least the principal current of compressor current
Stream is preferably the complete machine electric current of air conditioner, because the monitoring of complete machine electric current is the function that existing air conditioner generally all has, this sky
It adjusts device to utilize existing current monitoring unit, no longer needs to that current detection module is separately provided, simplify structure.
As shown in Fig. 2, the embodiment of the invention also provides a kind of refrigerating methods of duplex cylinder compressor air conditioner, wherein main
Electric current I includes duplex cylinder compressor electric current, can be used for embodying the operating status of complete machine electric current；This method specifically includes the following steps:
S0, refrigeration mode booting operation, execute step S1；
S1, judge whether outdoor environment temperature T is greater than the first temperature threshold TS1, if so, S2 is thened follow the steps, if it is not, then
Execute step S3；
Wherein, outdoor environment temperature can be obtained by above-mentioned temperature detecting unit, and the first temperature threshold TS1It can be 30~
70 DEG C, preferably 50 DEG C, can be used as judge outdoor temperature whether be high state a threshold value；It is greater than in outdoor environment temperature
First set temperature threshold value TS1Under conditions of, i.e., when outdoor temperature is in excessively high state, if compressor is at this time with twin-tub mould
Formula operation, then can directly cause complete machine electric current excessively high, cause air conditioner the excessively high protection of electric current occur and shut down, therefore compressor should
Step S2 is executed, with single cylinder mode operation；And it is not more than the first set temperature threshold value T in outdoor environment temperatureS1Under conditions of, i.e.,
When outdoor temperature is not at excessively high state, therefore compressor can't directly result in complete machine electric current mistake with twin-tub mode operation
Height, therefore step S3 can be executed, enable compressor with single cylinder mode operation.
S2, compressor are with the second preset duration of single cylinder mode operation t2Step S4 is executed afterwards；
Specifically, abovementioned steps are greater than the first temperature threshold T in outdoor environment temperature TS1Under conditions of, to avoid complete machine electric
It flows through greatly, compressor is not meant to that compressor just can absolutely guarantee complete machine electricity with single cylinder mode with single cylinder mode operation
Stream is not in excessively high state, therefore also needs whether the electric current for further verifying compressor is excessively high, i.e. execution step S4；The
Two preset duration t2It can be 0~5 minute, preferably 1 minute, because current value is simultaneously at the beginning of the operation of compressor start single cylinder
It is unstable, to avoid the step S4 for making subsequent progress from forming erroneous judgement, preferably after compressor start twin-tub runs a period of time, then
The judgement of electric current in step S4 is carried out, to obtain more accurate judging result.
S3, compressor are with twin-tub mode operation third preset duration t3Step S5 is executed afterwards；
Although specifically, outdoor environment temperature be not it is excessively high make, compressor can't be in short-term with twin-tub mode operation
In directly result in that complete machine electric current is excessive, but compressor with the time of twin-tub mode operation it is longer after, then it is possible that complete machine
The excessively high situation of electric current, therefore after compressor current is stablized, it is also necessary to compressor is verified further with twin-tub by step S5
It is excessively high whether complete machine electric current will lead to after when mode operation；Third preset duration t therein3It can be 0~5 minute, preferably 1
Minute, because current value is simultaneously unstable, excellent to avoid causing in step s 5 judging by accident at the beginning of the operation of compressor start twin-tub
After being selected in compressor start twin-tub operation a period of time, then the judgement of electric current in step S5 is carried out, to obtain more accurately judgement
As a result.
S4, judge whether current principal current I is greater than the first current threshold IS1, if so, S8 is thened follow the steps, if it is not, then holding
Row step S6；
Specifically, the first current threshold IS1It is for determining whether the running current of air conditioner is an excessively high threshold value；
Preceding step is greater than the first set temperature threshold value T in outdoor environment temperatureS1Under conditions of, to avoid complete machine electric current excessive, compressor
With single cylinder operational mode start run, and if compressor single cylinder operation under conditions of, still make complete machine electric current be greater than first electricity
Flow threshold value IS1, then illustrate that the state of air conditioner at this time is not suitable for running under this high ambient conditions, step S8 should be executed, adopted
Take temporary stoppage protection measure；And if compressor can't make complete machine electric current be more than the first current threshold with single cylinder mode operation
IS1, then illustrate that the state of air conditioner at this time can be run under this high ambient conditions, can continue that single cylinder is kept to run, and due to
It is not related to the pattern switching of compressor, therefore does not will form the jump of electric current, Ying Zhihang step S6.
S5, judge whether current principal current I is greater than the first current threshold IS1, if so, S2 is thened follow the steps, if it is not, then holding
Row step S7；
Specifically, being not larger than the first set temperature threshold value T in outdoor environment temperatureS1Under conditions of, it is also necessary to pass through this
Step further verifies whether complete machine current value of the compressor with twin-tub mode operation when exceeds the first current threshold IS1If
Electric current be will lead to beyond the first current threshold IS1, then it needs the twin-tub pattern switching of compressor to be single cylinder mode, and compressor
It will lead to current-jump at the beginning of being twin-tub mode by twin-tub pattern switching, therefore step S2 should be executed；And if compressor is with twin-tub
Mode operation can't make complete machine electric current beyond the first current threshold IS1, then illustrate that compressor still can be with twin-tub mode after reforwarding
Row, and due to not being related to the switching of compressor mode, therefore be not in the hopping phenomenon of electric current, Ying Zhihang step S7；
S6, compressor execute step S4 with single cylinder mode operation；
Specifically, passing through the circulation of step S6 to step S4, the real-time prison to the compressor of single cylinder mode operation is realized
It surveys and electric current judges, once complete machine electric current exceeds the first current threshold IS1, then step S8 can be executed in time, into protection
Shutdown status.
S7, compressor execute step S5 with twin-tub mode operation；
Specifically, passing through the circulation of step S5 to step S4, the real-time prison to the compressor of twin-tub mode operation is realized
It surveys and electric current judges, once complete machine electric current exceeds the first current threshold IS1, then step S2 can be executed in time, by compressor
It is switched to single cylinder mode.
S8, the first preset duration of compressor shutdown t1Step S0 is executed afterwards；
Specifically, compressor shutdown, after cooling after a period of time, then booting operation in a chiller mode.
From the foregoing, it will be observed that the refrigerating method of this duplex cylinder compressor air conditioner enables compressor by the state of outdoor environment temperature
With single cylinder mode or twin-tub mode elder generation trial operation, further again by can embody air conditioner complete machine current status include compression
There is protection shutdown further to adjust the operational mode of compressor so as to which air conditioner is greatly reduced in the principal current of electromechanics stream
Probability, and system pressure can also be reduced in operation, reduce system loading.
Embodiment two
A kind of refrigerating method of duplex cylinder compressor air conditioner provided by Embodiment 2 of the present invention, the difference with embodiment one exist
In:
As shown in figure 3, in step S4 to further comprising the steps of between step S6:
S9, judge whether current principal current is greater than the second current threshold IS2, if so, S6 is thened follow the steps, if it is not, then executing
Step S3, wherein IS2Less than IS1；
Specifically, during system recycles between step S4 and S6, since compressor is single cylinder mode operation always,
I.e. system loading is smaller, therefore complete machine electric current can gradually decrease, and when complete machine electric current is down to the second current threshold IS2When following, pressure
Compressor, can be switched to twin-tub mode operation, in this way by the contracting machine actually condition of load twin-tub mode operation at this time
Not only refrigerating efficiency can be improved, but also complete machine electric current will not be made excessively high, and since compressor is by single cylinder pattern switching to twin-tub mode
It is related to the jump of electric current, therefore step S3 should be executed, and due to IS2Less than IS1, i.e. IS2With IS1Between have certain difference, institute
With the setting I appropriate according to the type of air conditionerS2And IS1Value, can to avoid high frequent carry out mono-/bis-cylinder mode
Switching；And the second current threshold I is down in principal currentS2Before below, compressor is also to maintain single cylinder mode operation, that is, executes
Step S6.
Embodiment three
A kind of refrigerating method for duplex cylinder compressor air conditioner that the embodiment of the present invention three provides, the area with embodiment one or two
It is not:
As shown in figure 4, in step S1 to further comprising the steps of between step S2:
S10, judge whether outdoor environment temperature value T is greater than second temperature threshold value TS2, if so, S2 is thened follow the steps, if it is not,
Then follow the steps S11, wherein TS2Less than TS1；
Specifically, when the outdoor ambient temperature is low due to compressor, compressor can be met generally using single cylinder mode
Refrigeration requirement therefore judge outdoor environment temperature T for less than greater than the first temperature threshold T in step slS1And then it will
Outdoor environment temperature value T and second temperature threshold value TS2It is compared, if outdoor environment temperature value T is greater than the second temperature threshold value
TS2, then illustrate that outdoor environment temperature is not at lower state, and then just execute step S2；And if outdoor environment temperature value
T is less than second temperature threshold value TS2, then specification outdoor environment temperature is in lower state, and compressor only need to be with single cylinder at this time
Mode operation can meet refrigeration and require, thus can reduce energy consumption.
S11, compressor execute step S1 with single cylinder mode operation；
Specifically, compressor when with single cylinder mode operation, also wants the variation of real-time monitoring outdoor environment temperature, as long as room
External environment temperature is in second temperature threshold value TS2Hereinafter, then compressor is always with single cylinder mode operation.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and replacement can also be made, these are improved and replacement
Also it should be regarded as protection scope of the present invention.
Claims (11)
1. a kind of duplex cylinder compressor air conditioner, which is characterized in that including duplex cylinder compressor, switch unit, be used for sensing chamber's outer ring
The temperature detecting unit of border temperature and current detecting unit for detecting principal current, the principal current include duplex cylinder compressor electricity
Stream；The switch unit is used for the outdoor environment temperature according to detected by the temperature detecting unit and the current detecting list
Principal current detected by member switches to control the duplex cylinder compressor between twin-tub operational mode and single cylinder operational mode；
The switching method of the switch unit includes:
S1, judge whether outdoor environment temperature T is greater than the first temperature threshold TS1, if so, S2 is thened follow the steps, if it is not, then executing
Step S3；
S2, compressor are with the second preset duration of single cylinder mode operation t2Step S4 is executed afterwards；
S3, compressor are with twin-tub mode operation third preset duration t3Step S5 is executed afterwards；
S4, judge whether current principal current I is greater than the first current threshold IS1, if so, S8 is thened follow the steps, if it is not, then executing step
Rapid S6；
S5, judge whether current principal current I is greater than the first current threshold IS1, if so, S2 is thened follow the steps, if it is not, then executing step
Rapid S7；
S6, compressor execute step S4 with single cylinder mode operation；
S7, compressor execute step S5 with twin-tub mode operation；
S8, the first preset duration of compressor shutdown t1Step S0 is executed afterwards；
S0, refrigeration mode booting operation, execute step S1.
2. duplex cylinder compressor air conditioner according to claim 1, which is characterized in that the principal current is the complete machine of air conditioner
Electric current.
3. a kind of refrigerating method of duplex cylinder compressor air conditioner, which comprises the following steps:
S0, refrigeration mode booting operation, execute step S1；
S1, judge whether outdoor environment temperature T is greater than the first temperature threshold TS1, if so, S2 is thened follow the steps, if it is not, then executing
Step S3；
S2, compressor are with the second preset duration of single cylinder mode operation t2Step S4 is executed afterwards；
S3, compressor are with twin-tub mode operation third preset duration t3Step S5 is executed afterwards；
S4, judge whether current principal current I is greater than the first current threshold IS1, if so, S8 is thened follow the steps, if it is not, then executing step
Rapid S6；
S5, judge whether current principal current I is greater than the first current threshold IS1, if so, S2 is thened follow the steps, if it is not, then executing step
Rapid S7；
S6, compressor execute step S4 with single cylinder mode operation；
S7, compressor execute step S5 with twin-tub mode operation；
S8, the first preset duration of compressor shutdown t1Step S0 is executed afterwards；
Wherein, the principal current I includes duplex cylinder compressor electric current.
4. the refrigerating method of duplex cylinder compressor air conditioner according to claim 3, which is characterized in that it is described second it is default when
Long t2It is 0~5 minute.
5. the refrigerating method of duplex cylinder compressor air conditioner according to claim 4, which is characterized in that it is described second it is default when
Long t2It is 1 minute.
6. the refrigerating method of duplex cylinder compressor air conditioner according to claim 3, which is characterized in that when the third is preset
Long t3It is 0~5 minute.
7. the refrigerating method of duplex cylinder compressor air conditioner according to claim 6, which is characterized in that when the third is preset
Long t3It is 1 minute.
8. the refrigerating method of duplex cylinder compressor air conditioner according to claim 3, which is characterized in that first temperature threshold
Value TS1It is 30~70 DEG C.
9. the refrigerating method of duplex cylinder compressor air conditioner according to claim 8, which is characterized in that first temperature threshold
Value TS1It is 50 DEG C.
10. the refrigerating method of duplex cylinder compressor air conditioner according to claim 3, which is characterized in that in step S1 to step
It is further comprising the steps of between rapid S2:
S10, judge whether outdoor environment temperature value T is greater than second temperature threshold value TS2, if so, S2 is thened follow the steps, if it is not, then holding
Row step S11；
S11, compressor execute step S1 with single cylinder mode operation；
Wherein, TS2Less than TS1。
11. according to the refrigerating method of the described in any item duplex cylinder compressor air conditioners of claim 3 to 10, which is characterized in that In
Step S4 is to further comprising the steps of between step S6:
S9, judge whether current principal current is greater than the second current threshold IS2, if so, S6 is thened follow the steps, if it is not, thening follow the steps
S3；
Wherein, IS2Less than IS1。
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| CN109356854B (en) * | 2018-10-19 | 2019-12-27 | 珠海格力电器股份有限公司 | Variable volume compressor operation mode judgment method and equipment, variable volume compressor and air conditioner |
| CN109357452B (en) * | 2018-10-19 | 2019-12-27 | 珠海格力电器股份有限公司 | Compressor cylinder body switching detection method and device and air conditioner |
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| CN104251515A (en) * | 2013-06-25 | 2014-12-31 | 上海日立电器有限公司 | Household air conditioner refrigerating system capable of separately controlling latent heat and sensible heat |
| EP3093584A1 (en) * | 2015-03-23 | 2016-11-16 | LG Electronics Inc. | Outdoor fan motor driving device and air conditioner including the same |
| CN105758041A (en) * | 2016-04-29 | 2016-07-13 | 广东美的制冷设备有限公司 | Control method of single cold-type air conditioner |
| CN105928239A (en) * | 2016-04-29 | 2016-09-07 | 广东美的制冷设备有限公司 | Cooling and heating type air conditioner and control method thereof |
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