CN102914027A - Control method for preventing refrigerant of outdoor unit from bias flowing during refrigeration of multi-split air-conditioning unit - Google Patents
Control method for preventing refrigerant of outdoor unit from bias flowing during refrigeration of multi-split air-conditioning unit Download PDFInfo
- Publication number
- CN102914027A CN102914027A CN2012103499135A CN201210349913A CN102914027A CN 102914027 A CN102914027 A CN 102914027A CN 2012103499135 A CN2012103499135 A CN 2012103499135A CN 201210349913 A CN201210349913 A CN 201210349913A CN 102914027 A CN102914027 A CN 102914027A
- Authority
- CN
- China
- Prior art keywords
- premises station
- control method
- compressor
- temperature
- outdoor unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a control method for preventing a refrigerant of an outdoor unit from bias flowing during the refrigeration of a multi-split air-conditioning unit. The control method comprises the following steps: a. starting and operating a compressor (2) of a part of an outdoor unit (1); b. measuring the temperature Tcm of the middle part of a coil of the outdoor unit (1), measuring the temperature Tdef of the outlet of the coil of the outdoor unit (1), and further calculating the temperature difference delta T of the outlet and the middle part of the coil; c. judging whether delta T is larger than or equal to 4 and whether the temperature Tcm of the middle part of the coil of the outdoor unit (1) is larger than 55 DEG C, if both so, entering step e; if one condition is not met, entering next step; d. measuring the pressure value P of the outlet of the compressor (2) of the outdoor unit (1), and judging whether the pressure value P of the outlet of the compressor (2) is larger than 4Mpa; e. opening an electromagnetic valve (6) on a refrigerant pipe (7) of the outdoor unit (1) which is not operated; and f. operating normally. The control method can adjust automatically while the air-conditioner refrigerates so as to prevent the refrigerant of the outdoor unit from bias flowing.
Description
Technical field
The present invention relates to VRF Air Conditioning System, prevent the control method of off-premises station refrigerant bias current when specifically being a kind of VRF Air Conditioning System refrigeration.
Background technology
The VRF Air Conditioning System of prior art comprises a plurality of off-premises stations parallel with one another, a plurality of indoor set parallel with one another and two refrigerant circulation house stewards that connect each indoor set and each off-premises station.A plurality of off-premises stations after the parallel connection are communicated with a plurality of indoor sets after the parallel connection by two refrigerants circulation house stewards.
Each off-premises station comprises compressor, oil eliminator, four-way change-over valve, outdoor heat exchanger (being condenser during refrigeration mode), reservoir and gas-liquid separator.Compressor outlet is communicated with an end of oil eliminator, the other end of oil eliminator is communicated with the first valve port of four-way change-over valve, four-way change-over valve the second valve port is communicated with outdoor heat exchanger one end, the outdoor heat exchanger other end is communicated with an end of reservoir, among the other end of reservoir and the two refrigerants circulation house stewards one is communicated with by a cooling medium liquid pipe, this cooling medium liquid pipe is provided with magnetic valve, and another root refrigerant circulation house steward among two refrigerants circulation house steward is communicated with four-way change-over valve the 3rd valve port of each off-premises station, four-way change-over valve the 4th valve port is connected with an end of gas-liquid separator, and the other end of gas-liquid separator is communicated with the suction port of compressor.
Each indoor set comprises interior organic electronic expansion valve and indoor heat exchanger (being evaporimeter during refrigeration mode), one end of indoor heat exchanger is communicated with an end of interior organic electronic expansion valve, one among the other end of interior organic electronic expansion valve and the two refrigerants circulation house stewards is communicated with, and the house steward that circulates is communicated with for the other end of indoor heat exchanger and another root refrigerant among two refrigerants circulation house stewards.
During refrigeration mode, the first valve port of four-way change-over valve is communicated with the second valve port, and the 3rd valve port is communicated with the 4th valve port, and namely refrigerant is along compressor, outdoor heat exchanger, indoor heat exchanger, this route circulation of compressor.
The middle part of the heat exchange coil of outdoor heat exchanger is provided with the first temperature inductor, and the outlet of the heat exchange coil of outdoor heat exchanger is provided with the second temperature inductor, and the outlet of compressor is provided with a pressure sensor.Magnetic valve on the cooling medium liquid pipe between two above-mentioned temperature inductors, pressure sensor and reservoir and the refrigerant circulation house steward all is electrically connected with the air-conditioning master controller.
VRF Air Conditioning System can be regulated according to interior machine workload demand the number of the off-premises station of work, and when interior function power demand was high, all off-premises station operations when interior function power demand is low, only had the operation of part off-premises station.Such as the long-time running of fruit part off-premises station and other off-premises station does not move for a long time, just easily cause the cold-producing medium bias current, namely the refrigerant of the off-premises station of operation is too much, the off-premises station refrigerant that does not move is very few, in case the refrigerant of off-premises station is too much, high voltage fault then easily appears, shorten the service life of unit.
Summary of the invention
The technical problem to be solved in the present invention is to prevent the control method of off-premises station refrigerant bias current when a kind of VRF Air Conditioning System refrigeration that can automatically regulate is provided.
Technical solution of the present invention is, prevents the control method of off-premises station refrigerant bias current when a kind of VRF Air Conditioning System refrigeration is provided, and its concrete steps are as follows:
A, VRF Air Conditioning System is adjusted to refrigeration mode, and with compressor start operation a period of time of part off-premises station, and other off-premises station is not started shooting;
First temperature inductor at the coil pipe middle part of b, the outdoor heat exchanger by the off-premises station that moving is measured the coil pipe middle part temperature T of this off-premises station
CmAnd temperature-measuring results sent to the air-conditioning master controller; The second temperature inductor of the coil pipe outlet of the outdoor heat exchanger by this off-premises station is measured the coil pipe outlet temperature T of this off-premises station
DefAnd temperature-measuring results sent to the air-conditioning master controller, calculate again T
CmDeduct T
DefDifference △ T;
C, judge that △ T is whether more than or equal to 4 and the coil pipe middle part temperature T of this off-premises station
CmWhether greater than 55 ℃, if two conditions all satisfy, then enter step e; If two conditions do not satisfy, then enter step f; If have a condition not satisfy, enter next step;
The pressure sensor of d, the compressor outlet by the off-premises station that moving is measured the compressor delivery pressure value P of this off-premises station, and the result sent to the air-conditioning master controller, judge that whether compressor delivery pressure value P is greater than 4Mpa, if yes then enter step e, if not, then directly enter step f;
E, open the magnetic valve on the cooling medium liquid pipe of the off-premises station that does not move, until the coil pipe of the off-premises station of operation middle part temperature T
CmLess than 3.1Mpa, close again the magnetic valve on the cooling medium liquid pipe of the off-premises station that does not move less than the compressor delivery pressure value P of off-premises station of 52 ℃ or operation;
F, every certain interval of time, repeating step b ~ e is until shut down.
This controlling party ratio juris is: during the VRF Air Conditioning System refrigerating operaton, the middle part of the coil pipe of discovery outdoor heat exchanger and the temperature difference in exit are greater than 4 ℃, just illustrate that this off-premises station is in normal refrigeration, in case the compressor delivery pressure of this off-premises station is excessive or outdoor heat exchanger coil pipe middle part excess Temperature, the refrigerant that just can judge this off-premises station is too much, bias current appears, at this moment, open the magnetic valve of the cooling medium liquid pipe of off-duty off-premises station, just can so that the refrigerant of the too much off-premises station of refrigerant enter the reservoir and outdoor heat exchanger of off-duty off-premises station from this magnetic valve, so that the refrigerant in the too much off-premises station of the refrigerant that is moving reduces, pressure decreased is alleviated and is improved the refrigerant bias current.
Adopt above method, prevent the control method of off-premises station refrigerant bias current during VRF Air Conditioning System refrigeration of the present invention compared with prior art, have the following advantages:
By this control method, can effectively alleviate the situation of improving the bias current of the different off-premises station refrigerant of VRF Air Conditioning System, avoid the many off-premises stations of refrigerant high voltage fault to occur, prolong the service life of unit, prevent that simultaneously the very few off-premises station refrigeration of refrigerant is bad, and the several judgement data in this control method, such as coil pipe middle part temperature T
CmWhether greater than 55 ℃, compressor delivery pressure value P whether greater than 4Mpa, △ T whether more than or equal to 4 and judge that judgement data compression machine outlet pressure value P that adjustment process finishes is less than the coil pipe middle part temperature T of 3.1Mpa, off-premises station
CmAll be optimum data through repetition test screening and checking less than 52 ℃ of grades, above-mentioned a series of data, namely not too sensitivity caused crossing too early repeatedly to regulate wasting the unit energy, can not cause regulating the untimely high voltage fault that occurs owing to too blunt yet.
As improvement, described a period of time of step a refers to 5 ~ 10 minutes, be that compressor operating begins to regulate Biased flow phenomenon after 5 ~ 10 minutes, because this VRF Air Conditioning System after operation a period of time, just begins to occur Biased flow phenomenon, by evidence, move after 5 ~ 10 minutes and to regulate more accurately, too early regulate, bias current can not occur, need not regulate, the high voltage fault that the words bias current of regulating too late causes has caused harmful effect.
As improving again, described a period of time of step a refers to 10 minutes, be that 10 minutes these time points of compressor operating begin to regulate Biased flow phenomenon, prove by repetition test, this time point was the most accurate in 10 minutes, too early regulated, and bias current can not occur, need not regulate, the high voltage fault that the words bias current of regulating too late causes has caused harmful effect.
As further improving, described a period of time of step f refers to 10 ~ 30 seconds again, and that namely regulates is spaced apart 10 ~ 30 seconds at every turn, and better to the regulating effect of bias current, this draws through overtesting, if adjusting is too frequent, there is no need; If regulate number of times very little, the dynamics that bias current is regulated is inadequate.
As also further improving, described a period of time of step e refers to 15 seconds, and namely every interval was regulated once in 15 seconds, and best to the regulating effect of bias current, this draws through repetition test, if adjusting is too frequent, there is no need; If regulate number of times very little, the dynamics that bias current is regulated is inadequate.
Description of drawings
Fig. 1 prevents the systematic schematic diagram of the control method of off-premises station refrigerant bias current when being VRF Air Conditioning System refrigeration of the present invention.
Shown in the figure 1, off-premises station, 2, compressor, 3, outdoor heat exchanger, the 4, first temperature inductor, 5, pressure sensor, 6, magnetic valve, 7, the cooling medium liquid pipe, 8, reservoir, 9, refrigerant circulation house steward, the 10, second temperature inductor.
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, prevent the control method of off-premises station refrigerant bias current during VRF Air Conditioning System refrigeration of the present invention, its concrete steps are as follows.
A, VRF Air Conditioning System is adjusted to refrigeration mode, and with 2 start operation a period of times of compressor of part off-premises station 1, and other off-premises station 1 is not started shooting; A period of time in this step refers to 5 ~ 10 minutes, preferred 10 minutes.
First temperature inductor 4 at the coil pipe middle part of b, the outdoor heat exchanger 3 by the off-premises station 1 that moving is measured the coil pipe middle part temperature T of these off-premises stations 1
CmAnd temperature-measuring results sent to the air-conditioning master controller; The second temperature inductor 10 of the coil pipe outlet of the outdoor heat exchanger 3 by this off-premises station 1 is measured the coil pipe outlet temperature T of these off-premises stations 1
DefAnd temperature-measuring results sent to the air-conditioning master controller, calculate again T
CmDeduct T
DefDifference △ T; Wherein, two data of each off-premises station that is moving 1 are one group, and the master controller of air-conditioning is with the i.e. T of this off-premises station 1 of one group of data of same off-premises station 1
CmDeduct T
DefObtain difference △ T.
C, judge that △ T is whether more than or equal to 4 and the coil pipe middle part temperature T of this off-premises station 1
CmWhether greater than 55 ℃, if two conditions all satisfy, then enter step e; If two conditions do not satisfy, then enter step f; If have a condition not satisfy, enter next step; In particular, for each off-premises station 1 that is moving, the △ T that must judge this off-premises station 1 is more than or equal to 4 and the T of this off-premises station 1
CmGreater than 55 ℃, just can enter step e and regulate, if in two conditions does not satisfy, then enter next step and continue to judge and do not regulate; If the △ T of this off-premises station 1 is less than 4 and the T of this off-premises station 1
CmLess than 55 ℃, just enter step f and normally move.
The pressure sensor 5 of d, compressor 2 outlets by the off-premises station 1 that moving is measured the compressor 2 outlet pressure value P of these off-premises stations 1, and the result sent to the air-conditioning master controller, judge that whether compressor 2 outlet pressure value P are greater than 4Mpa, if yes then enter step e, if not, then directly enter step f.
E, open the magnetic valve 6 on the cooling medium liquid pipe 7 of the off-premises station 1 that does not move, until the coil pipe of the off-premises station 1 of operation middle part temperature T
CmLess than 3.1Mpa, close again the magnetic valve 6 on the cooling medium liquid pipe 7 of the off-premises station 1 that does not move less than the compressor 2 outlet pressure value P of off-premises station 1 of 52 ℃ or operation.This magnetic valve 6 is the magnetic valves 6 on the cooling medium liquid pipe 7 between the refrigerant circulation house steward 9 of the reservoir 8 of off-premises station 1 and VRF Air Conditioning System, in case open the magnetic valve 6 of the off-premises station 1 that does not move, refrigerant just can enter through this magnetic valve 6 reservoir 8 and the outdoor heat exchanger 3 of the off-premises station 1 that does not move.When the coil pipe middle part of the off-premises station 1 that moves temperature T
CmSatisfy less than these two conditions of 3.1Mpa less than the compressor 2 outlet pressure value P of the off-premises station 1 of 52 ℃ or operation under one the prerequisite, the magnetic valve 6 of just cutting out the off-premises station 1 that does not move finishes to regulate.
F, every certain interval of time, repeating step b ~ e is until shut down; A period of time in this step refers to 10 ~ 30 seconds, preferred 15 seconds.
Claims (5)
1. prevent the control method of off-premises station refrigerant bias current when a VRF Air Conditioning System is freezed, it is characterized in that: its concrete steps are as follows:
A, VRF Air Conditioning System is adjusted to refrigeration mode, and with compressor (2) start operation a period of time of part off-premises station (1), and other off-premises station (1) is not started shooting;
First temperature inductor (4) at the coil pipe middle part of b, the outdoor heat exchanger (3) by the off-premises station (1) that moving is measured the coil pipe middle part temperature T of this off-premises station (1)
CmAnd temperature-measuring results sent to the air-conditioning master controller; Second temperature inductor (10) of the coil pipe outlet of the outdoor heat exchanger (3) by this off-premises station (1) is measured the coil pipe outlet temperature T of this off-premises station (1)
DefAnd temperature-measuring results sent to the air-conditioning master controller, calculate again T
CmDeduct T
DefDifference △ T;
C, judge that △ T is whether more than or equal to 4 and the coil pipe middle part temperature T of this off-premises station (1)
CmWhether greater than 55 ℃, if two conditions all satisfy, then enter step e; If two conditions do not satisfy, then enter step f; If have a condition not satisfy, enter next step;
The pressure sensor (5) of d, compressor (2) outlet by the off-premises station (1) that moving is measured compressor (2) the outlet pressure value P of this off-premises station (1), and the result sent to the air-conditioning master controller, judge that whether compressor (2) outlet pressure value P is greater than 4Mpa, if yes then enter step e, if not, then directly enter step f;
E, open the magnetic valve (6) on the cooling medium liquid pipe (7) of the off-premises station (1) that does not move, until the coil pipe of the off-premises station (1) of operation middle part temperature T
CmLess than 3.1Mpa, close again the magnetic valve (6) on the cooling medium liquid pipe (7) of the off-premises station (1) that does not move less than compressor (2) the outlet pressure value P of off-premises station (1) of 52 ℃ or operation;
F, every certain interval of time, repeating step b ~ e is until shut down.
2. prevent the control method of off-premises station refrigerant bias current when VRF Air Conditioning System according to claim 1 is freezed, it is characterized in that: described a period of time of step a refers to 5 ~ 10 minutes.
3. prevent the control method of off-premises station refrigerant bias current when VRF Air Conditioning System according to claim 2 is freezed, it is characterized in that: described a period of time of step a refers to 10 minutes.
4. prevent the control method of off-premises station refrigerant bias current when VRF Air Conditioning System according to claim 1 is freezed, it is characterized in that: described a period of time of step f refers to 10 ~ 30 seconds.
5. prevent the control method of off-premises station refrigerant bias current when VRF Air Conditioning System according to claim 4 is freezed, it is characterized in that: described a period of time of step f refers to 15 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210349913.5A CN102914027B (en) | 2012-09-20 | 2012-09-20 | Control method for preventing refrigerant of outdoor unit from bias flowing during refrigeration of multi-split air-conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210349913.5A CN102914027B (en) | 2012-09-20 | 2012-09-20 | Control method for preventing refrigerant of outdoor unit from bias flowing during refrigeration of multi-split air-conditioning unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102914027A true CN102914027A (en) | 2013-02-06 |
| CN102914027B CN102914027B (en) | 2015-01-21 |
Family
ID=47612510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210349913.5A Active CN102914027B (en) | 2012-09-20 | 2012-09-20 | Control method for preventing refrigerant of outdoor unit from bias flowing during refrigeration of multi-split air-conditioning unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102914027B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344456A (en) * | 2013-07-29 | 2015-02-11 | 广东美的暖通设备有限公司 | Multi-split air conditioning system and outdoor unit refrigerant distribution unevenness adjusting method thereof |
| CN104456731A (en) * | 2014-11-21 | 2015-03-25 | 特灵空调系统(中国)有限公司 | Multi-split air conditioner |
| CN104729025A (en) * | 2015-04-09 | 2015-06-24 | 宁波奥克斯电气有限公司 | Dynamic refrigerant balance control method in refrigerating process of multi-connected air-conditioner unit |
| CN104776659A (en) * | 2015-04-14 | 2015-07-15 | 四川长虹空调有限公司 | Multi-split air conditioner refrigerant balancing control method and air conditioning system for achieving same |
| CN105423495A (en) * | 2015-12-16 | 2016-03-23 | 美的集团武汉制冷设备有限公司 | Air conditioner as well as freeze control method and device thereof |
| CN105526676A (en) * | 2015-12-23 | 2016-04-27 | 宁波奥克斯电气股份有限公司 | Method for judging whether liquid is accumulated in indoor heat exchangers of multi-connected units in heating process |
| CN105546736A (en) * | 2015-12-23 | 2016-05-04 | 宁波奥克斯电气股份有限公司 | Method for solving accumulated liquid of indoor heat exchanger of multi-split air conditioner during heating |
| CN113847684A (en) * | 2021-09-10 | 2021-12-28 | 珠海格力电器股份有限公司 | Compressor bias current processing method and device, storage medium and electronic equipment |
| CN114484720A (en) * | 2022-01-17 | 2022-05-13 | 青岛海尔空调电子有限公司 | Method and device for controlling air conditioner, air conditioner and storage medium |
| CN114674063A (en) * | 2022-04-22 | 2022-06-28 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device and air conditioner system |
| CN115614910A (en) * | 2022-10-11 | 2023-01-17 | 珠海格力电器股份有限公司 | Refrigerant bias flow processing method and device and modular air conditioning unit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1335167A1 (en) * | 2000-11-13 | 2003-08-13 | Daikin Industries, Ltd. | Air conditioner |
| CN1920423A (en) * | 2005-08-22 | 2007-02-28 | 乐金电子(天津)电器有限公司 | Air conditioner temperature control apparatus and method therefor |
| EP2071251A1 (en) * | 2006-09-19 | 2009-06-17 | Daikin Industries, Ltd. | Air-conditioning control intermediate device, air-conditioning control system, air-conditioning control method, and air-conditioning control program |
-
2012
- 2012-09-20 CN CN201210349913.5A patent/CN102914027B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1335167A1 (en) * | 2000-11-13 | 2003-08-13 | Daikin Industries, Ltd. | Air conditioner |
| CN1920423A (en) * | 2005-08-22 | 2007-02-28 | 乐金电子(天津)电器有限公司 | Air conditioner temperature control apparatus and method therefor |
| EP2071251A1 (en) * | 2006-09-19 | 2009-06-17 | Daikin Industries, Ltd. | Air-conditioning control intermediate device, air-conditioning control system, air-conditioning control method, and air-conditioning control program |
| CN101517326A (en) * | 2006-09-19 | 2009-08-26 | 大金工业株式会社 | Air-conditioning control intermediate device, air-conditioning control system, air-conditioning control method, and air-conditioning control program |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344456B (en) * | 2013-07-29 | 2017-03-29 | 广东美的暖通设备有限公司 | The uneven control method of multi-online air-conditioning system and its off-premises station coolant distribution |
| CN104344456A (en) * | 2013-07-29 | 2015-02-11 | 广东美的暖通设备有限公司 | Multi-split air conditioning system and outdoor unit refrigerant distribution unevenness adjusting method thereof |
| CN104456731A (en) * | 2014-11-21 | 2015-03-25 | 特灵空调系统(中国)有限公司 | Multi-split air conditioner |
| CN104729025A (en) * | 2015-04-09 | 2015-06-24 | 宁波奥克斯电气有限公司 | Dynamic refrigerant balance control method in refrigerating process of multi-connected air-conditioner unit |
| CN104729025B (en) * | 2015-04-09 | 2017-09-29 | 宁波奥克斯电气股份有限公司 | The dynamic equilibrium control method of refrigerant when VRF Air Conditioning System is freezed |
| CN104776659A (en) * | 2015-04-14 | 2015-07-15 | 四川长虹空调有限公司 | Multi-split air conditioner refrigerant balancing control method and air conditioning system for achieving same |
| CN105423495A (en) * | 2015-12-16 | 2016-03-23 | 美的集团武汉制冷设备有限公司 | Air conditioner as well as freeze control method and device thereof |
| CN105423495B (en) * | 2015-12-16 | 2018-03-27 | 美的集团武汉制冷设备有限公司 | Air conditioner and its anti-freeze control method and device |
| CN105546736A (en) * | 2015-12-23 | 2016-05-04 | 宁波奥克斯电气股份有限公司 | Method for solving accumulated liquid of indoor heat exchanger of multi-split air conditioner during heating |
| CN105526676A (en) * | 2015-12-23 | 2016-04-27 | 宁波奥克斯电气股份有限公司 | Method for judging whether liquid is accumulated in indoor heat exchangers of multi-connected units in heating process |
| CN105546736B (en) * | 2015-12-23 | 2018-07-06 | 宁波奥克斯电气股份有限公司 | The method for solving the indoor heat exchanger hydrops of multi-connected machine during heating |
| CN105526676B (en) * | 2015-12-23 | 2018-07-27 | 宁波奥克斯电气股份有限公司 | Judge heating when multi-connected machine indoor heat exchanger whether the method for hydrops |
| CN113847684A (en) * | 2021-09-10 | 2021-12-28 | 珠海格力电器股份有限公司 | Compressor bias current processing method and device, storage medium and electronic equipment |
| CN114484720A (en) * | 2022-01-17 | 2022-05-13 | 青岛海尔空调电子有限公司 | Method and device for controlling air conditioner, air conditioner and storage medium |
| CN114484720B (en) * | 2022-01-17 | 2024-06-07 | 青岛海尔空调电子有限公司 | Method and device for controlling air conditioner, air conditioner and storage medium |
| CN114674063A (en) * | 2022-04-22 | 2022-06-28 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device and air conditioner system |
| CN114674063B (en) * | 2022-04-22 | 2023-10-20 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device and air conditioner system |
| CN115614910A (en) * | 2022-10-11 | 2023-01-17 | 珠海格力电器股份有限公司 | Refrigerant bias flow processing method and device and modular air conditioning unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102914027B (en) | 2015-01-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102914027B (en) | Control method for preventing refrigerant of outdoor unit from bias flowing during refrigeration of multi-split air-conditioning unit | |
| CN103216908B (en) | Control method for outdoor fan in refrigeration of variable frequency multi-split air-conditioning unit | |
| CN102914026B (en) | Control method for preventing refrigerant of outdoor unit of multi-linkage air conditioning unit from deflecting during heating | |
| CN102278804B (en) | Control method for preventing bias flow of refrigerants during heating of multi-connected air conditioning unit | |
| CN103216909B (en) | Control method of outdoor fan during heating of variable-frequency multi-connection type air conditioning unit | |
| US9488396B2 (en) | Air-conditioning apparatus | |
| CN104729033B (en) | The antifreeze method and apparatus of the handpiece Water Chilling Units of air-conditioner set | |
| CN102767886B (en) | Method for judging proper amount of refrigerants for multi-united air conditioning unit | |
| US20190323720A1 (en) | Method for improving operational efficiency of a cooling system through retrofitting a building with a master controller | |
| CN204786771U (en) | Air conditioner | |
| CN102353120B (en) | Control method for preventing refrigerant partial flowing in refrigeration of multi-connection-type air-conditioning unit | |
| US20180259218A1 (en) | Air conditioning system | |
| CN102345949A (en) | Refrigerant flow regulating system of multi-connected air-conditioning heat exchanger and regulating method thereof | |
| CN104344456A (en) | Multi-split air conditioning system and outdoor unit refrigerant distribution unevenness adjusting method thereof | |
| CN105318491B (en) | The control method and device of air conditioner | |
| CN105042924A (en) | Air conditioner and control method thereof | |
| CN110822545A (en) | Variable frequency air conditioning system and control method for low frequency operation thereof | |
| CN102207323A (en) | Automatic regulating apparatus and method of refrigerant amount of air conditioner | |
| CN111928419A (en) | Control method and system for multi-split air conditioning unit | |
| CN203657079U (en) | Multiple-split air conditioning system | |
| CN105509261A (en) | Air conditioner and control method for air conditioner | |
| CN211204223U (en) | Variable frequency air conditioning system | |
| CN114165845A (en) | Multi-split air conditioner | |
| CN102967450B (en) | Method for detecting whether outdoor unit check valve of split type air conditioning unit is installed reversely | |
| CN107621058A (en) | Indoor unit refrigerant control device and control method thereof, indoor unit and air conditioning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee after: NINGBO AUX ELECTRIC CO., LTD. Address before: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee before: Ningbo AUX Electric Co., Ltd. |