CN203083190U - Multi-compressor efficient set - Google Patents
Multi-compressor efficient set Download PDFInfo
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- CN203083190U CN203083190U CN 201320098474 CN201320098474U CN203083190U CN 203083190 U CN203083190 U CN 203083190U CN 201320098474 CN201320098474 CN 201320098474 CN 201320098474 U CN201320098474 U CN 201320098474U CN 203083190 U CN203083190 U CN 203083190U
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- oil
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- oil return
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Abstract
The utility model provides a multi-compressor efficient set which can improve the oil separation efficiency, solves the problems in the prior art of oil balance and easiness in lacking oil among a plurality of parallel compressors, and effectively improves a performance parameter (IPLV (Integrated Part-Load Value)) when one part of the set loads, so that the comprehensive efficiency of the set is improved and the set can safely, efficiently and stably operate for long time. The multi-compressor efficient set comprises a full-liquid type evaporator, a condenser, an oil separator, a plurality of the compressors and a control device, wherein air exhausting openings of the plurality of compressors are connected with an air inlet of the oil separator; an oil outlet of the oil separator is connected with oil inlets of the plurality of compressors through an oil returning device, and an air outlet of the oil separator is connected with an inlet of the condenser; an outlet of the full-liquid type evaporator is connected with air suction openings of the plurality of compressors and an inlet of the full-liquid type evaporator is connected with an outlet of the condenser through an expanded throttling device; and outlets and inlets of the plurality of compressors are connected through an injection oil returning device, and the injection oil returning device is connected with an oil returning pipe of the full-liquid type evaporator.
Description
Technical field
The utility model relates to the air conditioner technical group field, especially relates 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-conditioning Enterprise is all dealt with the market demand at positive research and development heavy duty detergent unit, and wherein main is exactly to have released 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 present multi-compressor full-liquid type unit all is to adopt the compressor of a plurality of band oil contents to use a plurality of oil eliminators to carry out the oil separation respectively, can cause oil imbalance between the multiple compressors, the oily efficient of separating to hang down and the cost problem of higher.Because the lubricating oil boiling point is far above cold-producing medium, it is along with cold-producing medium can not evaporate with cold-producing medium after entering evaporimeter together, lubricating oil certainly will be cumulative in evaporimeter, thereby on the wall of heat exchanger, form one deck oil film, so just greatly reduce heat-transfer effect and heat exchange efficiency, the long-time running compressor is prone to oil starvation, and 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 the 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 the manufacturing cost height, also can't give full play to the advantage of part load performance.
The utility model content
The purpose of this utility model provides a kind of multi-compressor heavy duty detergent unit, it can improve oil and separate efficient, and can solve in the prior art between the multi-compressor parallel connection the oily balance and the easy problem of oil starvation, also effectively raise performance parameter (IPLV) value of unit when sub-load, the comprehensive efficiency of unit gets a promotion, and makes the operation that unit can the long-term safety efficient stable.
Multi-compressor heavy duty detergent unit of the present utility model comprises flooded evaporator, condenser, oil eliminator, a plurality of compressor and the control device of controlling each parts work of described multi-compressor heavy duty detergent unit, the exhaust outlet of described a plurality of compressors links to each other 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 links to each other with the inlet of described condenser; The outlet of described flooded evaporator links to each other with the air entry of described a plurality of compressors, the inlet of described flooded evaporator links to each other with the outlet of described condenser by expansion throttling device, the outlet of described a plurality of compressors all links to each other by an injection oil return apparatus with inlet, and described injection oil return apparatus links to each other with the oil return pipe of described flooded evaporator.
Liquid refrigerant in the flooded evaporator absorbs heat, be evaporated to gaseous refrigerant, enter in the compressor by the air entry of each compressor and become gases at high pressure, be expelled to then and carry out Oil-gas Separation in the 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 the flooded evaporator through expansion throttling device, thus circularly cooling again and again.A plurality of compressors in the above-mentioned multi-compressor heavy duty detergent unit shared 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 the injection oil return apparatus 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 the oil strainer and the oil return solenoid valve of series connection, oil return solenoid valve and compressor are with opening with closing, can by control oil return solenoid valve unlatching or close the oil return work of controlling, and oil strainer can filter the impurity in the return line, prevent pipeline blockage, guarantee that oil enters compressor inside, thereby prolong the service life of compressor.
Further, described injection oil return apparatus is the injection oil return solenoid valve and the injector of series connection, the injection port of export of described injector links to each other with the inlet of compressor, the injection arrival end links to each other with the outlet of compressor by the injection oil return solenoid valve, is linked to each other with the oil return pipe of described flooded evaporator by the injection end.Unlatching that can be by control injection oil return solenoid valve or close the injection oil return work of controlling, and injector is to utilize the refrigerant gas of compressor air-discharging end elevated pressures that evaporimeter mesolow refrigeration oil is sucked in the injector, get back to the suction end of compressor after the mixing respectively, reach the purpose of oil return.
Further, described compressor is the inner not screw compressor of oil-containing separator, and this kind compressor arrangement is simple, few easy workout part, can the big compression ratio of carrying, and can dynamically adapt to the variation operating mode, can also solve in the prior art problem of oily balance between the multi-compressor.
Further, described flooded evaporator and condenser adopt shared 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 purpose of energy saving.
Multi-compressor heavy duty detergent unit oil of the present utility model separates efficient height, reliability height, heat exchange efficiency height, cost is low and control is simple, 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 embodiment of the present utility model.
Among the 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-injection oil return solenoid valve; 10,13-injector, 15-control device.
The specific embodiment
Contrast accompanying drawing below, by description, the effect of the mutual alignment between the shape of the specific embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part and operation principle etc. are described in further detail embodiment.
Embodiment 1:
As shown in Figure 1, the multi-compressor heavy duty detergent unit of present embodiment comprises flooded evaporator 5, condenser 4, oil eliminator 3, two compressors 1,2 and the multi-compressor heavy duty detergent unit of control present embodiment in the control device 15 of each parts work, wherein compressor 1,2 is the inner not heavy duty detergent unit bolt special formula compressor of oil-containing separator, 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 compressor 1 accurately, 2 by the load start and stop, and are provided with man-machine interface etc.Wherein flooded evaporator 5 and condenser 4 have adopted shared refrigerant loop.
The exhaust outlet of compressor 1,2 links to each other with the corresponding air inlet of oil eliminator 3, and the oil-out of oil eliminator 3 is connected by the oil-in of oil return apparatus with compressor 1,2, and the gas outlet of described oil eliminator 3 links to each other with the inlet of condenser 4; The outlet of flooded evaporator 5 links to each other with the air entry of compressor 1,2, the inlet of flooded evaporator 5 links to each other with the outlet of condenser 4 by expansion throttling device 8, the outlet of compressor 1,2 all links to each other by an injection oil return apparatus with inlet, and described injection oil return apparatus links to each other with the oil return pipe of described flooded evaporator 5.
Above-mentioned oil return apparatus is the oil strainer 7,12 and the oil return solenoid valve 6,11 of series connection, and oil return solenoid valve 6,11 and compressor be with opening with closing, unlatching that can be by controlling oil return solenoid valve 6,11 or close the oil return work of controlling; And the impurity that oil strainer 7,12 can filter in the return line prevents pipeline blockage, guarantees that oil enters compressor 1,2 inside, thereby prolongs the service life of compressor 1,2.
Above-mentioned injection oil return apparatus is the injection oil return solenoid valve 9,14 and the injector 10,13 of series connection, the injection port of export of injector 10,13 links to each other with the inlet of compressor 1,2, the injection arrival end links to each other with the outlet of compressor 1,2 by injection oil return solenoid valve 9,14, is linked to each other by the oil return pipe of injection end with described flooded evaporator 5.Unlatching that can be by control injection oil return solenoid valve 9,14 or close the injection oil return work of controlling, and injector the 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 the injector 10,13, get back to the suction end of compressor 1,2 after the mixing respectively, reach the purpose of oil return.
Liquid refrigerant in the flooded evaporator 5 absorbs heat, be evaporated to gaseous refrigerant, enter in the compressor 1,2 and become gases at high pressure by the air entry of compressor 1,2, be expelled to then and carry out Oil-gas Separation in the 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 the 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 the above-mentioned multi-compressor heavy duty detergent unit are shared horizontal oil eliminator 3, and because of horizontal common oil eliminator 3 inner flow velocitys very low, oil can be separated substantially fully with cold media gas, in the system and be provided with the injection oil return apparatus, therefore system does not have the trapped fuel problem, and unit efficiency is promoted; Because of 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 the 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; Because unit adopts shared flooded evaporator and condenser system, effectively raises the heat exchange area of unit when sub-load, has improved the IPLV value of unit greatly, and the decline of unit operation cost, can reach purpose of energy saving.
The above only is a preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (6)
1. multi-compressor heavy duty detergent unit, it is characterized in that comprising flooded evaporator, condenser, oil eliminator, a plurality of compressor and the control device of controlling each parts work of described multi-compressor heavy duty detergent unit, the exhaust outlet of described a plurality of compressors links to each other 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 links to each other with the inlet of described condenser; The outlet of described flooded evaporator links to each other with the air entry of described a plurality of compressors, the inlet of described flooded evaporator links to each other with the outlet of described condenser by expansion throttling device, the outlet of described a plurality of compressors all links to each other by an injection oil return apparatus with inlet, and described injection oil return apparatus links to each other 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 oil strainer and the oil return solenoid valve of described oil return apparatus for series connection.
4. multi-compressor heavy duty detergent unit according to claim 1 and 2, it is characterized in that injection oil return solenoid valve and the injector of described injection oil return apparatus for series connection, the injection port of export of described injector links to each other with the inlet of compressor, the injection arrival end links to each other with the outlet of compressor by the injection oil return solenoid valve, is linked to each other 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 not screw compressor of oil-containing separator.
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 |
|---|---|---|---|
| CN 201320098474 CN203083190U (en) | 2013-03-05 | 2013-03-05 | Multi-compressor efficient set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320098474 CN203083190U (en) | 2013-03-05 | 2013-03-05 | Multi-compressor efficient set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203083190U true CN203083190U (en) | 2013-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320098474 Withdrawn - After Issue CN203083190U (en) | 2013-03-05 | 2013-03-05 | Multi-compressor efficient set |
Country Status (1)
| Country | Link |
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| CN (1) | CN203083190U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115452A (en) * | 2013-03-05 | 2013-05-22 | 昆山台佳机电有限公司 | Multi-compressor efficient type unit |
| CN104654667A (en) * | 2013-11-25 | 2015-05-27 | 珠海格力电器股份有限公司 | Outdoor unit module of multiple on-line system and multiple on-line system provided with same |
-
2013
- 2013-03-05 CN CN 201320098474 patent/CN203083190U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115452A (en) * | 2013-03-05 | 2013-05-22 | 昆山台佳机电有限公司 | Multi-compressor efficient type unit |
| CN104654667A (en) * | 2013-11-25 | 2015-05-27 | 珠海格力电器股份有限公司 | Outdoor unit module of multiple on-line system and multiple on-line system provided with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130724 Effective date of abandoning: 20151209 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |