CN103115452A - Multi-compressor efficient type unit - Google Patents
Multi-compressor efficient type unit Download PDFInfo
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- CN103115452A CN103115452A CN2013100685790A CN201310068579A CN103115452A CN 103115452 A CN103115452 A CN 103115452A CN 2013100685790 A CN2013100685790 A CN 2013100685790A CN 201310068579 A CN201310068579 A CN 201310068579A CN 103115452 A CN103115452 A CN 103115452A
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Abstract
The invention provides a multi-compressor efficient type unit which can improve an oil separation rate, solve the problems that in the prior art, oil imbalance and shortage exist among parallel compressors, effectively improve an integrated part load value (IPLV) of a performance parameter value in partial loading of the unit, improve comprehensive energy efficiency of the unit and enable the unit to operate safely, efficiently and stably for a long time. The multi-compressor efficient type unit comprises a flooded evaporator, a condenser, an oil separator, a plurality of compressors and a control device. Each air exhaust opening of each compressor is connected with an air inlet of the oil separator. An oil outlet of the oil separator is connected with an oil inlet of each compressor through an oil returning device. An air outlet of the oil separator is connected with an inlet of the condenser. An outlet of the flooded evaporator is connected with each air absorption opening of each compressor and an inlet of the flooded evaporator is connected with an outlet of the condenser through a swelling throttling gear. An outlet of each compressor is respectively connected with an inlet of each compressor through an injection oil returning device. The injection oil returning device is connected with an oil returning pipe of the flooded evaporator.
Description
Technical field
The present invention relates to the air conditioner technical group field, especially relate to a kind of multi-compressor heavy duty detergent unit.
Background technology
" energy-conservation " and " environmental protection " become the development topic of current refrigerating and air conditioning industry, and energy-conserving product is the trend of social development.Therefore Domestic Air-condition enterprise all deals with the market demand at positive research and development heavy duty detergent unit, and wherein main is exactly to have released the high energy efficiency energy-conserving product such as full-liquid type unit.Compare with the dry type unit, full-liquid type unit heat transfer temperature difference is little, the outlet degree of superheat is little, evaporating temperature increases, and heat exchange area has obtained effective utilization, and heat exchange amount and efficient also are increased dramatically, and is more energy-efficient.
Yet multi-compressor full-liquid type unit is all to adopt a plurality of a plurality of oil eliminators of compressors use with oil content to carry out respectively oil to separate at present, can cause oily uneven, the low higher problem of cost that reaches of oil separation efficient between multiple compressors.Due to the lubricating oil boiling point far above cold-producing medium, it can not evaporate with cold-producing medium after entering evaporimeter together along with cold-producing medium, lubricating oil certainly will be cumulative in evaporimeter, thereby form one deck oil film on the wall of heat exchanger, so just greatly reduce heat-transfer effect and heat exchange efficiency, move for a long time compressor and be prone to oil starvation, this safe and highly efficient operation to unit is totally unfavorable, not only can not bring into play the heat transfer property of flooded evaporator, also can cause the security of unit.And the multi-compressor full-liquid type unit of at present a lot of manufacturer production, the water that flows except evaporimeter and condenser tube side is series connection, refrigerant loop is fully independently, make the multi-compressor unit virtually completely be equivalent to many fully independently units, so not only cause manufacturing cost high, also can't give full play to the advantage of part load performance.
Summary of the invention
The purpose of this invention is to provide a kind of multi-compressor heavy duty detergent unit, it can improve oil and separate efficient, and can solve in prior art between Multi-compressor parallel oily balance and the easy problem of oil starvation, also effectively raise performance parameter (IPLV) value of unit when sub-load, the unit comprehensive energy efficiency gets a promotion, and makes the operation that unit can the long-term safety efficient stable.
The control device that multi-compressor heavy duty detergent unit of the present invention comprises flooded evaporator, condenser, oil eliminator, a plurality of compressor and controls the work of described multi-compressor heavy duty detergent unit all parts, the exhaust outlet of described a plurality of compressors is connected with the corresponding air inlet of described oil eliminator, the oil-out of described oil eliminator is connected with the oil-in of described multiple compressors by oil return apparatus, and the gas outlet of described oil eliminator is connected with the entrance of described condenser; The outlet of described flooded evaporator is connected with the air entry of described a plurality of compressors, the entrance of described flooded evaporator is connected with the outlet of described condenser by expansion throttling device, the outlet of described a plurality of compressors all is connected by an injection oil return device with entrance, and described injection oil return device is connected with the oil return pipe of described flooded evaporator.
Liquid refrigerant in flooded evaporator absorbs heat, be evaporated to gaseous refrigerant, enter in compressor and become gases at high pressure by the air entry of each compressor, then be expelled to and carry out Oil-gas Separation in oil eliminator, enter condenser and be condensed into the liquid refrigerant of high pressure through the gases at high pressure after the oil eliminator Oil-gas Separation, then become low-pressure, liquid refrigerant and get back in flooded evaporator through expansion throttling device, thus circularly cooling again and again.A plurality of compressors in above-mentioned multi-compressor heavy duty detergent unit share flooded evaporator, condenser and an oil eliminator, can improve oil and separate efficient, and effectively improve the heat exchange area of unit when sub-load, and be provided with injection oil return device in this multi-compressor heavy duty detergent unit, solved system's trapped fuel problem, unit performance is promoted.
Further, described oil eliminator is the horizontal common oil eliminator that is provided with the oil-collecting bag, and the inner flow velocity of horizontal common oil eliminator is very low, and oil can be separated substantially fully with cold media gas.
Further, described oil return apparatus is oil strainer and the oil return solenoid valve of series connection, oil return solenoid valve and compressor are with opening with closing, unlatching that can be by controlling oil return solenoid valve or close to control oil return work, and oil strainer can filter the impurity in return line, prevent pipeline blockage, guarantee that oil enters compressor inside, thereby extend the service life of compressor.
Further, described injection oil return device is ejecting scavenge return magnetic valve and the injector of series connection, the injection port of export of described injector is connected with the entrance of compressor, the injection arrival end is connected with the outlet of compressor by the ejecting scavenge return magnetic valve, is connected with the oil return pipe of described flooded evaporator by the injection end.Unlatching that can be by controlling the ejecting scavenge return magnetic valve or close to control ejecting scavenge return work, and injector is to utilize the refrigerant gas of compressor air-discharging end elevated pressures that evaporimeter mesolow refrigeration oil is sucked in injector, get back to respectively the suction end of compressor after mixing, reach the purpose of oil return.
Further, described compressor is the inner screw compressor that does not contain oil eliminator, and this kind compressor arrangement is simple, few easy workout part, can the larger compression ratio of carrying, and dynamic Adaptive change operating mode, can also solve in prior art the problem of oily balance between multi-compressor.
Further, described flooded evaporator and condenser adopt and share refrigerant loop, can effectively improve the heat exchange area of unit when sub-load, and unit IPLV value is promoted, and operating cost descends, thereby reaches energy-conservation purpose.
Multi-compressor heavy duty detergent unit oil separation efficient of the present invention is high, reliability is high, heat exchange efficiency is high, cost low and it is simple to control, and can give full play to the heat transfer property of flooded evaporator, and improve the security of unit, has good market prospects.
Description of drawings
Fig. 1 is the workflow schematic diagram of embodiments of the invention.
In figure: 1,2-compressor; The 3-oil eliminator; The 4-condenser; The 5-flooded evaporator; 6,11-oil return solenoid valve; 7,12-oil strainer; The 8-expansion throttling device; 9,14-ejecting scavenge return magnetic valve; 10,13-injector, 15-control device.
The specific embodiment
The below contrasts accompanying drawing, by the description to embodiment, the effect of the mutual alignment between the shape of the specific embodiment of the present invention such as related each member, structure, each several part and annexation, each several part and operation principle etc. are described in further detail.
Embodiment 1:
as shown in Figure 1, the multi-compressor heavy duty detergent unit of the present embodiment comprises flooded evaporator 5, condenser 4, oil eliminator 3, two compressors 1, 2 and the control device 15 of controlling all parts work in the multi-compressor heavy duty detergent unit of the present embodiment, wherein compressor 1, 2 are the inner heavy duty detergent unit bolt special formula compressor that does not contain oil eliminator, oil eliminator 3 is for being provided with the horizontal common oil eliminator of oil-collecting bag, control device 15 comprises CPU and data acquisition module, and be furnished with pressure sensor and temperature sensor, can control accurately compressor 1, 2 by the load start and stop, and be provided with man-machine interface etc.Wherein flooded evaporator 5 and condenser 4 have adopted shared refrigerant loop.
Compressor 1,2 exhaust outlet are connected with the corresponding air inlet of oil eliminator 3, and the oil-out of oil eliminator 3 is connected by oil return apparatus and compressor 1,2 oil-in, and the gas outlet of described oil eliminator 3 is connected with the entrance of condenser 4; The outlet of flooded evaporator 5 and compressor 1,2 air entry are connected, the entrance of flooded evaporator 5 is connected with the outlet of condenser 4 by expansion throttling device 8, compressor 1,2 outlet all are connected by an injection oil return device with entrance, and described injection oil return device is connected with the oil return pipe of described flooded evaporator 5.
Above-mentioned oil return apparatus is the oil strainer 7,12 and oil return solenoid valve 6,11 of series connection, and oil return solenoid valve 6,11 with opening with closing, can or close to control oil return work with compressor by control oil return solenoid valve 6,11 unlatching; And oil strainer 7,12 impurity that can filter in return line prevent pipeline blockage, guarantee that oil enters compressor 1,2 inside, thereby extend compressor 1, service life of 2.
Above-mentioned injection oil return device is the ejecting scavenge return magnetic valve 9,14 and injector 10,13 of series connection, injector 10,13 the injection port of export and compressor 1,2 entrance are connected, the injection arrival end is connected with compressor 1,2 outlet by ejecting scavenge return magnetic valve 9,14, is connected by the oil return pipe of injection end with described flooded evaporator 5.Unlatching that can be by controlling ejecting scavenge return magnetic valve 9,14 or close to control ejecting scavenge return work, and injector 10, the 13rd utilizes the refrigerant gas of compressor 1,2 exhaust end elevated pressures that flooded evaporator 4 mesolow refrigeration oils are sucked in injector 10,13, get back to respectively compressor 1,2 suction end after mixing, reach the purpose of oil return.
Liquid refrigerant in flooded evaporator 5 absorbs heat, be evaporated to gaseous refrigerant, enter in compressor 1,2 and become gases at high pressure by compressor 1,2 air entry, then be expelled to and carry out Oil-gas Separation in oil eliminator 3, enter condenser 4 and be condensed into the liquid refrigerant of high pressure through the gases at high pressure after oil eliminator 3 Oil-gas Separation, then become low-pressure, liquid refrigerant and get back in flooded evaporator 5 through expansion throttling device 8, thus circularly cooling again and again.
Two heavy duty detergent unit bolt special formula compressors 1,2 in above-mentioned multi-compressor heavy duty detergent unit have shared a Horizontal oil separator 3, and because of the inner flow velocity of horizontal common oil eliminator 3 very low, oil can be separated substantially fully with cold media gas, in system and be provided with injection oil return device, therefore system without the trapped fuel problem, can make unit efficiency promote; Because using heavy duty detergent unit bolt special formula compressor 1,2, so just can there not be the phenomenon of oil imbalance, oil starvation between compressor 1,2, also need not loaded down with trivial details control, manufacturing cost is reduced, and can promote unit safety and stability behavior in service; Share flooded evaporator and condenser system because unit adopts, effectively raise the heat exchange area of unit when sub-load, greatly improved the IPLV value of unit, and the decline of unit operation cost, can reach energy-conservation purpose.
The above is only the preferred embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present invention.
Claims (6)
1. multi-compressor heavy duty detergent unit, it is characterized in that the control device that comprises flooded evaporator, condenser, oil eliminator, a plurality of compressor and control the work of described multi-compressor heavy duty detergent unit all parts, the exhaust outlet of described a plurality of compressors is connected with the corresponding air inlet of described oil eliminator, the oil-out of described oil eliminator is connected with the oil-in of described multiple compressors by oil return apparatus, and the gas outlet of described oil eliminator is connected with the entrance of described condenser; The outlet of described flooded evaporator is connected with the air entry of described a plurality of compressors, the entrance of described flooded evaporator is connected with the outlet of described condenser by expansion throttling device, the outlet of described a plurality of compressors all is connected by an injection oil return device with entrance, and described injection oil return device is connected with the oil return pipe of described flooded evaporator.
2. multi-compressor heavy duty detergent unit according to claim 1, is characterized in that described oil eliminator is the horizontal common oil eliminator that is provided with the oil-collecting bag.
3. multi-compressor heavy duty detergent unit according to claim 1 and 2, is characterized in that described oil return apparatus is oil strainer and the oil return solenoid valve of series connection.
4. multi-compressor heavy duty detergent unit according to claim 1 and 2, it is characterized in that described injection oil return device is ejecting scavenge return magnetic valve and the injector of series connection, the injection port of export of described injector is connected with the entrance of compressor, the injection arrival end is connected with the outlet of compressor by the ejecting scavenge return magnetic valve, is connected with the oil return pipe of described flooded evaporator by the injection end.
5. multi-compressor heavy duty detergent unit according to claim 1 and 2, is characterized in that described compressor is the inner screw compressor that does not contain oil eliminator.
6. multi-compressor heavy duty detergent unit according to claim 1 and 2, is characterized in that described flooded evaporator and condenser have adopted shared refrigerant loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310068579.0A CN103115452B (en) | 2013-03-05 | 2013-03-05 | A kind of multi-compressor heavy duty detergent unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310068579.0A CN103115452B (en) | 2013-03-05 | 2013-03-05 | A kind of multi-compressor heavy duty detergent unit |
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| CN103115452A true CN103115452A (en) | 2013-05-22 |
| CN103115452B CN103115452B (en) | 2015-12-09 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374024A (en) * | 2014-10-27 | 2015-02-25 | 昆山台佳机电有限公司 | Integrated flooded water source heat pump unit with refrigerant side switching function |
| CN104501437A (en) * | 2014-11-25 | 2015-04-08 | 珠海格力电器股份有限公司 | Heat pump system and operation method thereof |
| CN106225274A (en) * | 2016-08-25 | 2016-12-14 | 浙江青风环境股份有限公司 | A kind of vortex parallel full-liquid type handpiece Water Chilling Units |
| CN107339826A (en) * | 2017-07-04 | 2017-11-10 | 重庆美的通用制冷设备有限公司 | Compressor assembly and there is its refrigeration system |
| CN107642921A (en) * | 2016-07-22 | 2018-01-30 | 约克（无锡）空调冷冻设备有限公司 | Oil balancing system and there is its multiscrew compressor parallel refrigeration unit |
| CN109442775A (en) * | 2018-09-26 | 2019-03-08 | 广州市凌静制冷设备有限公司 | A kind of vortex water cooled chiller |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060010904A1 (en) * | 2004-07-13 | 2006-01-19 | Nieter Jeffrey J | Oil separator for vapor compression system compressor |
| CN2814269Y (en) * | 2005-07-01 | 2006-09-06 | 烟台冰轮股份有限公司 | Refrigerating system capable of ejecting scavenge return |
| CN201269660Y (en) * | 2008-10-07 | 2009-07-08 | 珠海格力电器股份有限公司 | Double-compressor parallel screw hydraulic filling type water chilling unit system |
| CN201583057U (en) * | 2009-11-19 | 2010-09-15 | 同方人工环境有限公司 | Oil return structure of flooded evaporator refrigerating unit |
| CN203083190U (en) * | 2013-03-05 | 2013-07-24 | 昆山台佳机电有限公司 | Multi-compressor efficient set |
-
2013
- 2013-03-05 CN CN201310068579.0A patent/CN103115452B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060010904A1 (en) * | 2004-07-13 | 2006-01-19 | Nieter Jeffrey J | Oil separator for vapor compression system compressor |
| CN2814269Y (en) * | 2005-07-01 | 2006-09-06 | 烟台冰轮股份有限公司 | Refrigerating system capable of ejecting scavenge return |
| CN201269660Y (en) * | 2008-10-07 | 2009-07-08 | 珠海格力电器股份有限公司 | Double-compressor parallel screw hydraulic filling type water chilling unit system |
| CN201583057U (en) * | 2009-11-19 | 2010-09-15 | 同方人工环境有限公司 | Oil return structure of flooded evaporator refrigerating unit |
| CN203083190U (en) * | 2013-03-05 | 2013-07-24 | 昆山台佳机电有限公司 | Multi-compressor efficient set |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374024A (en) * | 2014-10-27 | 2015-02-25 | 昆山台佳机电有限公司 | Integrated flooded water source heat pump unit with refrigerant side switching function |
| CN104501437A (en) * | 2014-11-25 | 2015-04-08 | 珠海格力电器股份有限公司 | Heat pump system and operation method thereof |
| CN107642921A (en) * | 2016-07-22 | 2018-01-30 | 约克（无锡）空调冷冻设备有限公司 | Oil balancing system and there is its multiscrew compressor parallel refrigeration unit |
| CN106225274A (en) * | 2016-08-25 | 2016-12-14 | 浙江青风环境股份有限公司 | A kind of vortex parallel full-liquid type handpiece Water Chilling Units |
| CN107339826A (en) * | 2017-07-04 | 2017-11-10 | 重庆美的通用制冷设备有限公司 | Compressor assembly and there is its refrigeration system |
| CN109442775A (en) * | 2018-09-26 | 2019-03-08 | 广州市凌静制冷设备有限公司 | A kind of vortex water cooled chiller |
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| Publication number | Publication date |
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| CN103115452B (en) | 2015-12-09 |
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