CN103791590A - Method for VRV air conditioner outdoor heat exchange and dispersion in refrigeration mode - Google Patents
Method for VRV air conditioner outdoor heat exchange and dispersion in refrigeration mode Download PDFInfo
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- CN103791590A CN103791590A CN201410035121.XA CN201410035121A CN103791590A CN 103791590 A CN103791590 A CN 103791590A CN 201410035121 A CN201410035121 A CN 201410035121A CN 103791590 A CN103791590 A CN 103791590A
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Abstract
The invention discloses a method for VRV air conditioner outdoor heat exchange and dispersion in a refrigeration mode. The method mainly comprises the steps that inlets of outdoor heat exchangers (3) of outdoor units are connected with one another through connecting pipelines (2) provided with ball valves (1); in a refrigeration mode, part of outdoor units are started and operated, once the pressure value of a pressure sensor (7) of an outlet of a compressor (4) of a certain outdoor unit is larger than 3.5 MPa, the ball valve (1) of the connecting pipeline (2) between the high-pressure outdoor unit and the outdoor unit which is closest to the high-pressure outdoor unit and not started is opened. According to the method for VRV air conditioner outdoor heat exchange and dispersion in the refrigeration mode, the condition that the unit heat exchange amount is insufficient due to the fact that the outdoor temperature is high or the surfaces of the outdoor heat exchangers are covered with dust is avoided.
Description
Technical field
The present invention relates to VRV air-conditioning, i.e. VRF Air Conditioning System, is called for short combined air conditioners, is specifically a kind of method that VRV air conditioner refrigerating pattern outdoor heat exchange disperses.
Background technology
The VRF Air Conditioning System of prior art comprises multiple off-premises stations parallel with one another, multiple indoor set parallel with one another and connects two refrigerant circulation house stewards of each indoor set and off-premises station.Multiple off-premises stations after parallel connection are communicated with the multiple indoor sets after parallel connection by two refrigerant circulation house stewards.
Each off-premises station comprises compressor, oil eliminator, four-way change-over valve, outdoor heat exchanger (being condenser when refrigeration mode) and gas-liquid separator.Compressor outlet is communicated with one 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 in two refrigerants circulation house stewards one, and another root refrigerant circulation house steward in two refrigerants circulation house stewards 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 one end of gas-liquid separator, and the other end of gas-liquid separator is communicated with suction port of compressor.The outlet of compressor is also provided with pressure sensor.
Each indoor set comprises interior organic electronic expansion valve and indoor heat exchanger (being evaporimeter when refrigeration mode), one end of indoor heat exchanger is communicated with one end of interior organic electronic expansion valve, the other end of interior organic electronic expansion valve is communicated with in two refrigerants circulation house stewards one, and the house steward that circulates is communicated with for the other end of indoor heat exchanger and another root refrigerant in two refrigerants circulation house stewards.
When 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 refrigerant is along compressor, outdoor heat exchanger, interior organic electronic expansion valve, indoor heat exchanger, this route circulation of compressor.
Air-conditioning unit is in actual motion, often occur that indoor set start number of units is few, change heat demand is not very large situation, under normal condition, without by whole off-premises stations start heat exchange, and only the start of part off-premises station just can need be met to the heat demand of changing of system.But when outdoor temperature is higher, the heat transfer effect of outdoor heat exchanger is poor, cause set heat exchange quantity not sufficient, can not normally freeze, the temperature applicable range of unit operation is narrow, operational reliability is poor.And be stained with after ash because of long-term use on outdoor heat exchanger surface, the heat exchange area of heat exchanger can reduce, and equally also can cause heat exchange quantity not sufficient, cannot normally freeze.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of and avoid because of outdoor temperature compared with the high or surperficial method of being stained with ash and cause the VRV air conditioner refrigerating pattern outdoor heat exchange of set heat exchange quantity not sufficient to disperse of outdoor heat exchanger.
Technical solution of the present invention is, a kind of method that provides VRV air conditioner refrigerating pattern outdoor heat exchange to disperse, and its concrete steps are as follows:
A, the connecting line of use with ball valve interconnect the entrance of the outdoor heat exchanger of each off-premises station;
B, under refrigeration mode, by part off-premises station start operation, force value once the pressure sensor of the compressor outlet of certain off-premises station is greater than 3.5Mpa, open this high pressure off-premises station and and the not ball valve of the connecting line between the off-premises station of start of this high pressure off-premises station distance the shortest;
C, refrigerant are discharged again after the oil eliminator of this off-premises station from the compressor outlet of high pressure off-premises station, be divided into two strands, one still flows into the outdoor heat exchanger of high pressure off-premises station, another stock-traders' know-how connecting line flows into the not outdoor heat exchanger of the off-premises station of start, two plumes collaborate same refrigerant circulation house steward through the refrigerant of Liang Ge different chamber external heat exchanger, then each indoor set of flowing through, and then flow into another root refrigerant circulation house steward, the compressor of last sucked back high pressure off-premises station, completes circulation.
Adopt above method, the method that VRV air conditioner refrigerating pattern outdoor heat exchange of the present invention disperses compared with prior art, has the following advantages:
If outdoor temperature is too high or because outdoor heat exchanger is stained with ash and is caused off-premises station heat transfer effect poor, heat exchange quantity not sufficient, a large amount of gaseous coolants in the outdoor heat exchanger of off-premises station liquefy not enough naturally so, cause pressure to raise, be that compressor outlet force value is while being greater than 3.5Mpa when pressure is raised to warning value, open connecting line, make in fact the outdoor heat exchanger of high pressure off-premises station and the not outdoor heat exchanger parallel connection of the off-premises station of start, the compressor of high pressure off-premises station of start can drive refrigerant this two outdoor heat exchangers of flowing through simultaneously, make that original the heat exchange area of idle outdoor heat exchanger was utilized owing to not starting shooting, under the prerequisite of off-premises station number of units that does not increase start, effectively increased the heat exchange area of unit, improve heat transfer effect, increase the heat exchange amount of unit, make unit and still can normally freeze in the time that outdoor temperature is higher or when ash is stained with by heat exchanger, expand the temperature applicable range of air-conditioning, strengthen system operation reliability, moreover, although the increase of output power of the high pressure off-premises station of start, due to the heat exchange area that doubled, significantly strengthening the heat exchange amount of unit, the ratio of heat exchange amount and compressor horsepower is that the Energy Efficiency Ratio of air-conditioning still enlarges markedly.
Accompanying drawing explanation
Fig. 1 is the systematic schematic diagram of the method for VRV air conditioner refrigerating pattern outdoor heat exchange dispersion of the present invention.
Shown in figure 1, ball valve, 2, connecting line, 3, outdoor heat exchanger, 4, compressor, 5, oil eliminator, 6, refrigerant circulation house steward, 7, pressure sensor.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 1, the method that VRV air conditioner refrigerating pattern outdoor heat exchange of the present invention disperses, its concrete steps are as follows.
A, the connecting line 2 of use with ball valve 1 interconnect the entrance of the outdoor heat exchanger of each off-premises station 3; Illustrate, if this unit has 5 off-premises stations, the entrance of the outdoor heat exchanger 3 of so each off-premises station is communicated with through connecting line 2 with the entrance of the outdoor heat exchanger 3 of other four off-premises stations.
B, under refrigeration mode, by part off-premises station start operation, the force value of the pressure sensor 7 exporting once the compressor 4 of certain off-premises station is greater than 3.5Mpa, this off-premises station is just called high pressure off-premises station, opens this high pressure off-premises station and and the not ball valve 1 of the connecting line 2 between the off-premises station of start of this high pressure off-premises station distance the shortest.
C, refrigerant are discharged again after the oil eliminator 5 of this off-premises station from compressor 4 outlets of high pressure off-premises station, be divided into two strands, one still flows into the outdoor heat exchanger 3 of high pressure off-premises station, another stock-traders' know-how connecting line 2 flows into the outdoor heat exchanger 3 of an off-premises station of not starting shooting the shortest with this high pressure off-premises station distance, two plumes collaborate same refrigerant circulation house steward 6 through the refrigerant of Liang Ge different chamber external heat exchanger 3, each indoor set of flowing through again, then flow into another root refrigerant circulation house steward 6, the compressor 4 of last sucked back high pressure off-premises station, completes circulation.
The method is in fact that the heat transfer process carrying out in single off-premises station is distributed in two off-premises stations and is carried out, and therefore named outdoor heat exchange disperses.
Claims (1)
1. the method that VRV air conditioner refrigerating pattern outdoor heat exchange disperses, is characterized in that: its concrete steps are as follows:
A, with band ball valve (1) connecting line (2) entrance of the outdoor heat exchanger of each off-premises station (3) is interconnected;
B, under refrigeration mode, by part off-premises station start operation, force value once the pressure sensor (7) of compressor (4) outlet of certain off-premises station is greater than 3.5Mpa, open this high pressure off-premises station and and the not ball valve (1) of the connecting line (2) between the off-premises station of start of this high pressure off-premises station distance the shortest;
C, refrigerant are discharged again after the oil eliminator (5) of this off-premises station from compressor (4) outlet of high pressure off-premises station, be divided into two strands, one still flows into the outdoor heat exchanger (3) of high pressure off-premises station, another stock-traders' know-how connecting line (2) flows into the not outdoor heat exchanger (3) of the off-premises station of start, two plumes collaborate same refrigerant circulation house steward (6) through the refrigerant of Liang Ge different chamber external heat exchanger (3), each indoor set of flowing through again, then flow into another root refrigerant circulation house steward (6), the compressor (4) of last sucked back high pressure off-premises station, completes circulation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410035121.XA CN103791590B (en) | 2014-01-25 | 2014-01-25 | The VRV air conditioner refrigerating scattered method of pattern outdoor heat exchange |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410035121.XA CN103791590B (en) | 2014-01-25 | 2014-01-25 | The VRV air conditioner refrigerating scattered method of pattern outdoor heat exchange |
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| CN103791590A true CN103791590A (en) | 2014-05-14 |
| CN103791590B CN103791590B (en) | 2016-09-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109899928A (en) * | 2019-03-20 | 2019-06-18 | 广东美的暖通设备有限公司 | The control method and device of the electric expansion valve of indoor machine evaporation entrance |
| WO2021142993A1 (en) * | 2020-01-19 | 2021-07-22 | 青岛海尔空调电子有限公司 | Control method for multi-connected air conditioner unit |
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| WO2004088212A1 (en) * | 2003-03-28 | 2004-10-14 | Toshiba Carrier Corporation | Air conditioner |
| CN1782576A (en) * | 2004-11-29 | 2006-06-07 | 乐金电子(天津)电器有限公司 | One dragging more air conditioner |
| CN1808020A (en) * | 2004-12-28 | 2006-07-26 | Lg电子株式会社 | Heat pump air conditioner |
| JP2007292407A (en) * | 2006-04-26 | 2007-11-08 | Aisin Seiki Co Ltd | Air conditioner |
| KR20090042521A (en) * | 2007-10-26 | 2009-04-30 | 엘지전자 주식회사 | Multi-type air conditioner and the controlling method |
| CN101545689A (en) * | 2008-03-27 | 2009-09-30 | 东芝开利株式会社 | Air conditioning apparatus |
| KR20140000936A (en) * | 2012-06-26 | 2014-01-06 | 엘지전자 주식회사 | Multi-air conditioner for heating and cooling operations at the same time |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004088212A1 (en) * | 2003-03-28 | 2004-10-14 | Toshiba Carrier Corporation | Air conditioner |
| CN1782576A (en) * | 2004-11-29 | 2006-06-07 | 乐金电子(天津)电器有限公司 | One dragging more air conditioner |
| CN1808020A (en) * | 2004-12-28 | 2006-07-26 | Lg电子株式会社 | Heat pump air conditioner |
| JP2007292407A (en) * | 2006-04-26 | 2007-11-08 | Aisin Seiki Co Ltd | Air conditioner |
| KR20090042521A (en) * | 2007-10-26 | 2009-04-30 | 엘지전자 주식회사 | Multi-type air conditioner and the controlling method |
| CN101545689A (en) * | 2008-03-27 | 2009-09-30 | 东芝开利株式会社 | Air conditioning apparatus |
| KR20140000936A (en) * | 2012-06-26 | 2014-01-06 | 엘지전자 주식회사 | Multi-air conditioner for heating and cooling operations at the same time |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109899928A (en) * | 2019-03-20 | 2019-06-18 | 广东美的暖通设备有限公司 | The control method and device of the electric expansion valve of indoor machine evaporation entrance |
| WO2021142993A1 (en) * | 2020-01-19 | 2021-07-22 | 青岛海尔空调电子有限公司 | Control method for multi-connected air conditioner unit |
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| Publication number | Publication date |
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| CN103791590B (en) | 2016-09-14 |
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