CN106765885A - 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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- CN106765885A CN106765885A CN201611073526.8A CN201611073526A CN106765885A CN 106765885 A CN106765885 A CN 106765885A CN 201611073526 A CN201611073526 A CN 201611073526A CN 106765885 A CN106765885 A CN 106765885A
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Classifications
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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
-
- 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)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The present invention relates to duplex cylinder compressor air-conditioner refrigeration technology field, there is provided a kind of duplex cylinder compressor air-conditioner and its refrigerating method.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; compressor is made with single cylinder pattern or twin-tub pattern elder generation trial operation; further pass through that the principal current including compressor current of the whole electromechanical stream mode of air-conditioner can be embodied again; further to adjust the operational mode of compressor; there is the probability that protection is shut down so as to air-conditioner can be greatly reduced; and can also in operation reduce system pressure, reduce system loading.
Description
Technical field
The present invention relates to duplex cylinder compressor air-conditioner refrigeration technology field, a kind of duplex cylinder compressor air-conditioner is specifically provided
And its refrigerating method.
Background technology
Current twin-tub variable capacity air-conditioner is generally when environment temperature is relatively low using single cylinder mode operation, and in temperature
When slightly higher, twin-tub mode operation is used to increase system loading；When but in outside, temperature is extra high, under twin-tub pattern
Air-conditioner occur that whole electromechanics flows through protection high, need at this moment by traditional twin-tub patten transformation be single cylinder pattern, to subtract
Mini system pressure, reduces system loading.
The content of the invention
(1) technical problem to be solved
There is the probability that protection is shut down it is an object of the invention to provide a kind of air-conditioner that can reduce, and can also be in operation
Middle reduction system pressure, reduces the duplex cylinder compressor air-conditioner and its refrigerating method of system loading.
(2) technical scheme
To achieve the above object, the invention provides a kind of duplex cylinder compressor air-conditioner, the air-conditioner compresses including twin-tub
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 controlling the duplex cylinder compressor in twin-tub
Switch between formula and single cylinder operational mode.
Preferably, the principal current is the whole electromechanical stream of air-conditioner.
Present invention also offers a kind of refrigerating method of duplex cylinder compressor air-conditioner, the method is comprised the following steps：
S0, refrigeration mode start operation, perform step S1；
S1, judge outdoor environment temperature T whether more than the first temperature threshold TS1, if so, step S2 is then performed, if it is not, then
Perform step S3；
S2, compressor are with the second preset duration of single cylinder mode operation t2Step S4 is performed afterwards；
S3, compressor are with the preset duration t of twin-tub mode operation the 3rd3Step S5 is performed afterwards；
S4, judge current principal current I whether more than the first current threshold IS1, if so, step S8 is then performed, if it is not, then holding
Row step S6；
S5, judge current principal current I whether more than the first current threshold IS1, if so, step S2 is then performed, if it is not, then holding
Row step S7；
S6, compressor perform step S4 with single cylinder mode operation；
S7, compressor perform step S5 with twin-tub mode operation；
S8, the first preset duration of compressor shutdown t1Step S0 is performed 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 3rd preset duration t2It is 0~5 minute.
Preferably, the 3rd 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 outdoor environment temperature value T whether more than second temperature threshold value TS2, if so, step S2 is then performed, if it is not,
Then perform step S11；
S11, compressor perform 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 current principal current whether more than the second current threshold IS2, if so, step S6 is then performed, if it is not, then performing
Step S3；
Wherein, IS2Less than IS1。
(3) beneficial effect
A kind of duplex cylinder compressor air-conditioner and its refrigerating method that the present invention is provided, by the state of outdoor environment temperature,
Compressor is made with single cylinder pattern or twin-tub pattern elder generation trial operation, further again by the way that the whole electromechanical stream mode of air-conditioner can be embodied
Principal current including compressor current, further to adjust the operational mode of compressor, so as to air-conditioner appearance can be greatly reduced
The probability shut down is protected, and can also in operation reduce system pressure, reduce system loading.
Brief description of the drawings
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.
Reference：
1st, duplex cylinder compressor；2nd, four-way valve；3rd, condenser；4th, throttle part；5th, evaporator；6th, switch；7th, controller；
8th, temperature detecting unit；9th, current detecting unit.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the invention is described in further detail.Hereinafter implement
Example is not limited to the scope of the present invention for illustrating the present invention.
Embodiment one
As shown in figure 1, the air-conditioner of a kind of duplex cylinder compressor 1 that the present invention is provided, including by compressor, four-way valve 2, condensation
The double mode air-conditioning system of changes in temperature of the compositions such as device 3, throttle part 4 and evaporator 5.Specifically, condenser 3, the and of throttle part 4
Evaporator 5 is sequentially connected in series in coolant path, and the arrival end and the port of export of compressor connect with two interfaces of four-way valve 2 respectively
It is logical, and the two ends of the coolant path respectively with two other orifice of four-way valve 2, wherein, four-way valve 2 is used to make refrigerant
Path and compressor are switched between positive on-state and reverse on-state, so as to realize the system of air-conditioning system respectively
Chill formula and heating mode.
Wherein, the compressor of the embodiment of the present invention is duplex cylinder compressor 1, and duplex cylinder compressor 1 has two compressions of parallel connection
Cylinder, two compression cylinders respectively have single gas returning port and share a gas outlet；Duplex cylinder compressor 1 can selectivity with list
Cylinder pattern and twin-tub mode operation, under suitable condition, starting twin-tub mode operation can improve refrigerating efficiency.
In addition, the embodiment of the present invention also includes switch unit, the and of temperature detecting unit 8 for detecting outdoor environment temperature
Current detecting unit 9 for detecting principal current, switch unit specifically may include switch 6 and controller 7, duplex cylinder compressor 1
Two gas returning ports connected with the corresponding interface of four-way valve 2 by switch 6；Controller 7 respectively with duplex cylinder compressor 1 and switching
The signal of device 6 is connected, for controlling duplex cylinder compressor 1 with single cylinder mode operation or twin-tub mode operation and controlling accordingly double
Two break-makes of gas returning port of cylinder compressor 1.
Temperature detecting unit 8 and current detecting unit 9 are connected with controller 7 respectively, and switch unit is used to be examined according to temperature
The outdoor environment temperature detected by unit 8 and the principal current detected by 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 that duplex cylinder compressor 1 is transported with single cylinder mode operation or with twin-tub pattern
A capable essential condition, because in refrigeration, outdoor condenser 3 needs radiating, and the outdoor environment of lower temperature is lucky
Be conducive to the radiating of condenser 3, so, the consideration of comprehensive refrigerating efficiency and energy consumption now need to only make duplex cylinder compressor 1 with single cylinder
Mode operation, you can obtain good refrigerating efficiency with relatively low energy consumption；And when outdoor environment temperature is higher, condenser 3
Radiating efficiency reduction, be now to ensure refrigerating efficiency, it is necessary to which compressor start twin-tub mode operation, now, compressor is double
The electric current that cylinder mode operation can increase energy consumption, i.e. system can be raised, but still within the range of permission；But work as outdoor environment temperature
When too high, if duplex cylinder compressor 1 is still with twin-tub mode operation, system power can be made too high, air-conditioner occurs whole machine
The too high protection of electric current, is single cylinder pattern by twin-tub patten transformation, to reduce system pressure so can only now sacrifice refrigerating efficiency
Power, reduces system loading.
From the foregoing, it will be observed that when the operational mode of duplex cylinder compressor 1 is determined, to be not only based on outdoor environment temperature, also to examine
The whole machine current conditions of air-conditioner are considered, further to control the running status of compressor.And pass through what current detecting unit 9 was detected
So-called principal current, is to include a current value of the electric current of duplex cylinder compressor 1, because compressor is the main power consumption portion of air-conditioning system
Part, such as the whole electromechanical stream of general air-conditioner is 10A, and the power consumption of wherein compressor account for more than 9A, and the power consumption of remaining part is comprehensive
Conjunction is added up less than 1A；And, compressor is also a maximum part of curent change, and remaining part electric current is low and changes small.
Therefore, the whole machine power consumption condition of air-conditioning system, certainly, the main electricity can be embodied by least including the principal current of compressor current
Stream is preferably the whole electromechanical stream of air-conditioner, because the monitoring of whole electromechanical stream is the function that existing air-conditioner typically all possesses, this sky
Adjust device to utilize existing current monitoring unit, without being separately provided current detection module again, simplify structure.
As shown in Fig. 2 the embodiment of the present invention additionally provides a kind of refrigerating method of duplex cylinder compressor air-conditioner, wherein, it is main
Electric current I includes duplex cylinder compressor electric current, can be used to embody the running status of whole electromechanical stream；The method specifically includes following steps：
S0, refrigeration mode start operation, perform step S1；
S1, judge outdoor environment temperature T whether more than the first temperature threshold TS1, if so, step S2 is then performed, if it is not, then
Perform step S3；
Wherein, outdoor environment temperature can be obtained by said temperature detection unit, and the first temperature threshold TS1Can be 30~
70 DEG C, preferably 50 DEG C, can as judge outdoor temperature whether be high state a threshold value；It is more than in outdoor environment temperature
First design temperature threshold value TS1Under conditions of, i.e., when outdoor temperature is in too high state, if now compressor is with twin-tub mould
Formula is run, then can directly cause whole electromechanics to flow through height, causes air-conditioner the too high protection of electric current occur and shuts down, therefore compressor should
Step S2 is performed, with single cylinder mode operation；And it is not more than the first design temperature threshold value T in outdoor environment temperatureS1Under conditions of, i.e.,
When outdoor temperature is not at too high state, therefore compressor can't directly result in whole electromechanics and flow through with twin-tub mode operation
Height, therefore step S3 can be performed, compressor is made with single cylinder mode operation.
S2, compressor are with the second preset duration of single cylinder mode operation t2Step S4 is performed afterwards；
Specifically, abovementioned steps are more than the first temperature threshold T in outdoor environment temperature TS1Under conditions of, to avoid whole electromechanics
Flow through greatly, compressor is not meant to that compressor just definitely ensure that whole electromechanics with single cylinder pattern with single cylinder mode operation
Stream is not in too high state, therefore whether the electric current for also needing to further verify compressor is too high, that is, perform step S4；The
Two preset duration t2Can be 0~5 minute, preferably 1 minute, because at the beginning of compressor start single cylinder runs, current value is simultaneously
It is unstable, to avoid making the step of subsequently carrying out S4 from forming erroneous judgement, preferably after compressor start twin-tub operation a period of time, then
The judgement of electric current in step S4 is carried out, to obtain more accurately judged result.
S3, compressor are with the preset duration t of twin-tub mode operation the 3rd3Step S5 is performed afterwards；
Although specifically, making outdoor environment temperature is not too high, compressor can't be in short-term with twin-tub mode operation
It is interior to directly result in whole electromechanics and flow through greatly, but compressor with the time of twin-tub mode operation it is more long after, then it is possible that whole machine
The too high situation of electric current, therefore after compressor current stabilization, in addition it is also necessary to further verify compressor with twin-tub by step S5
Whether whole electromechanics can be caused height is flowed through after during mode operation；3rd preset duration t therein3It can be 0~5 minute, preferably 1
Minute, it is excellent to avoid causing erroneous judgement in step s 5 because at the beginning of compressor start twin-tub runs, current value is simultaneously unstable
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, more accurately to be judged
As a result.
S4, judge current principal current I whether more than the first current threshold IS1, if so, step S8 is then performed, if it is not, then holding
Row step S6；
Specifically, the first current threshold IS1It is for judging whether the running current of air-conditioner is a too high threshold value；
Preceding step is more than the first design temperature threshold value T in outdoor environment temperatureS1Under conditions of, to avoid whole electromechanics from flowing through greatly, compressor
With single cylinder operational mode startup optimization, and if under conditions of the operation of compressor single cylinder, still make whole electromechanical stream more than the first electricity
Stream threshold value IS1, then illustrate that the state of now air-conditioner is not suitable for being run under this high ambient conditions, step S8 should be performed, adopt
Take temporary transient stoppage protection measure；And if compressor can't make whole electromechanical stream more than the first current threshold with single cylinder mode operation
IS1, then illustrating the state of now air-conditioner can run under this high ambient conditions, can continue to keep single cylinder to run, and due to
It is not related to the pattern switching of compressor, therefore the saltus step of electric current will not be formed, step S6 should be performed.
S5, judge current principal current I whether more than the first current threshold IS1, if so, step S2 is then performed, if it is not, then holding
Row step S7；
Specifically, being not larger than the first design temperature threshold value T in outdoor environment temperatureS1Under conditions of, in addition it is also necessary to by this
Whether whole electromechanical flow valuve when step is further to verify compressor with twin-tub mode operation exceeds the first current threshold IS1If,
Electric current can be caused to exceed the first current threshold IS1, then it is single cylinder pattern to need the twin-tub pattern switching of compressor, and compressor
By twin-tub pattern switching for the first meeting of twin-tub pattern causes current-jump, therefore step S2 should be performed；And if compressor is with twin-tub
Mode operation can't make whole electromechanical stream beyond the first current threshold IS1, then illustrate that compressor can still continue to transport with twin-tub pattern
OK, and due to not being related to the switching of compressor mode, thus be not in electric current hopping phenomenon, step S7 should be performed；
S6, compressor perform step S4 with single cylinder mode operation；
Specifically, by the circulation of step S6 to step S4, realizing the real-time prison to the compressor of single cylinder mode operation
Survey and electric current judges, once whole electromechanical stream exceeds the first current threshold IS1, then can be to perform step S8 in time, into protection
Stopped status.
S7, compressor perform step S5 with twin-tub mode operation；
Specifically, by the circulation of step S5 to step S4, realizing the real-time prison to the compressor of twin-tub mode operation
Survey and electric current judges, once whole electromechanical stream exceeds the first current threshold IS1, then can be to perform step S2 in time, by compressor
Switch to single cylinder pattern.
S8, the first preset duration of compressor shutdown t1Step S0 is performed afterwards；
Specifically, compressor shutdown, through cooling after a while after, then start operation in a chiller mode.
From the foregoing, it will be observed that the refrigerating method of this duplex cylinder compressor air-conditioner, by the state of outdoor environment temperature, makes compressor
With single cylinder pattern or twin-tub pattern elder generation trial operation, further again by can embody the whole electromechanical stream mode of air-conditioner including compression
The principal current of electromechanics stream, further to adjust the operational mode of compressor, shuts down so as to air-conditioner being greatly reduced and protection occurs
Probability, and can also in operation reduce system pressure, reduce system loading.
Embodiment two
A kind of refrigerating method of duplex cylinder compressor air-conditioner that the embodiment of the present invention two is provided, the difference with embodiment one exists
In：
As shown in figure 3, in step S4 to further comprising the steps of between step S6：
S9, judge current principal current whether more than the second current threshold IS2, if so, step S6 is then performed, if it is not, then performing
Step S3, wherein, IS2Less than IS1；
Specifically, be all the time single cylinder mode operation due to compressor during system is circulated between step S4 and S6,
I.e. system loading is smaller, therefore whole electromechanical stream can be reduced gradually, and works as whole electromechanical stream and be down to the second current threshold IS2When following, pressure
The contracting machine actually condition of load twin-tub mode operation, now can switch to twin-tub mode operation, so by compressor
Both refrigerating efficiency can be improved, whole electromechanics will not be made to flow through height again, and because compressor is by single cylinder pattern switching to twin-tub pattern
It is related to the saltus step of electric current, therefore step S3 should be performed, 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, high frequent can be avoided to carry out mono-/bis-cylinder pattern
Switching；And it is down to the second current threshold I in principal currentS2Before below, compressor is also to maintain single cylinder mode operation, that is, perform
Step S6.
Embodiment three
A kind of refrigerating method of duplex cylinder compressor air-conditioner that the embodiment of the present invention three is provided, 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 outdoor environment temperature value T whether more than second temperature threshold value TS2, if so, step S2 is then performed, if it is not,
Step S11 is then performed, wherein, TS2Less than TS1；
Specifically, because compressor is when outdoor environment temperature is relatively low, compressor can meet general using single cylinder pattern
Refrigeration requirement, therefore, judge that outdoor environment temperature T is less than more than the first temperature threshold T in step slS1Afterwards, then will
Outdoor environment temperature value T and second temperature threshold value TS2It is compared, if outdoor environment temperature value T is more than the second temperature threshold value
TS2, then illustrate that outdoor environment temperature is not at relatively low state, and then just perform step S2；And if outdoor environment temperature value
T is less than second temperature threshold value TS2, then, in relatively low state, now compressor only need to be with single cylinder for specification outdoor environment temperature
Mode operation, you can meet refrigeration and require, it is thus capable of reducing energy consumption.
S11, compressor perform step S1 with single cylinder mode operation；
Specifically, compressor also wants the change of real-time monitoring outdoor environment temperature when with single cylinder mode operation, as long as room
External environment temperature is in second temperature threshold value TS2Hereinafter, then compressor all the time with single cylinder mode operation.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, on the premise of the technology of the present invention principle is not departed from, some improvement and replacement can also be made, these improve and replace
Also should be regarded as protection scope of the present invention.
Claims (11)
1. a kind of duplex cylinder compressor air-conditioner, it is characterised in that including duplex cylinder compressor, switch unit, for sensing chamber's outer shroud
The temperature detecting unit of border temperature and the current detecting unit for detecting principal current, the principal current include duplex cylinder compressor electricity
Stream；The switch unit is used for outdoor environment temperature and the current detecting list according to detected by the temperature detecting unit
Principal current detected by unit controls the duplex cylinder compressor to switch between twin-tub operational mode and single cylinder operational mode.
2. duplex cylinder compressor air-conditioner according to claim 1, it is characterised in that the principal current is the whole machine of air-conditioner
Electric current.
3. a kind of refrigerating method of duplex cylinder compressor air-conditioner, it is characterised in that comprise the following steps：
S0, refrigeration mode start operation, perform step S1；
S1, judge outdoor environment temperature T whether more than the first temperature threshold TS1, if so, step S2 is then performed, if it is not, then performing
Step S3；
S2, compressor are with the second preset duration of single cylinder mode operation t2Step S4 is performed afterwards；
S3, compressor are with the preset duration t of twin-tub mode operation the 3rd3Step S5 is performed afterwards；
S4, judge current principal current I whether more than the first current threshold IS1, if so, step S8 is then performed, if it is not, then performing step
Rapid S6；
S5, judge current principal current I whether more than the first current threshold IS1, if so, step S2 is then performed, if it is not, then performing step
Rapid S7；
S6, compressor perform step S4 with single cylinder mode operation；
S7, compressor perform step S5 with twin-tub mode operation；
S8, the first preset duration of compressor shutdown t1Step S0 is performed 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, it is characterised in that described second it is default when
T long2It is 0~5 minute.
5. the refrigerating method of duplex cylinder compressor air-conditioner according to claim 4, it is characterised in that described second it is default when
T long2It is 1 minute.
6. the refrigerating method of duplex cylinder compressor air-conditioner according to claim 3, it is characterised in that the described 3rd it is default when
T long3It is 0~5 minute.
7. the refrigerating method of duplex cylinder compressor air-conditioner according to claim 6, it is characterised in that the described 3rd it is default when
T long3It is 1 minute.
8. the refrigerating method of duplex cylinder compressor air-conditioner according to claim 3, it is characterised 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, it is characterised 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, it is characterised in that in step S1 to walking
It is further comprising the steps of between rapid S2：
S10, judge outdoor environment temperature value T whether more than second temperature threshold value TS2, if so, step S2 is then performed, if it is not, then holding
Row step S11；
S11, compressor perform step S1 with single cylinder mode operation；
Wherein, TS2Less than TS1。
The refrigerating method of the 11. duplex cylinder compressor air-conditioner according to any one of claim 3 to 10, it is characterised in that
Step S4 is to further comprising the steps of between step S6：
S9, judge current principal current whether more than the second current threshold IS2, if so, step S6 is then performed, if it is not, then performing step
S3；
Wherein, IS2Less than IS1。
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| CN108210254A (en) * | 2017-12-13 | 2018-06-29 | 深圳市罗伯医疗科技有限公司 | It is a kind of without the double push rod fluid power assistant robots of pump and its control method |
| CN109356854A (en) * | 2018-10-19 | 2019-02-19 | 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 |
| CN109357452A (en) * | 2018-10-19 | 2019-02-19 | 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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| CN109357452A (en) * | 2018-10-19 | 2019-02-19 | 珠海格力电器股份有限公司 | Compressor cylinder body switching detection method and device and air conditioner |
| 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 |
| US11808261B2 (en) | 2018-10-19 | 2023-11-07 | Gree Electric Appliances, Inc. Of Zhuhai | Variable capacity compressor operation mode determination method and device, variable capacity compressor, and air conditioner |
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