CN202757337U - Screw type refrigeration compressor unit for economizer - Google Patents
Screw type refrigeration compressor unit for economizer Download PDFInfo
- Publication number
- CN202757337U CN202757337U CN 201220334759 CN201220334759U CN202757337U CN 202757337 U CN202757337 U CN 202757337U CN 201220334759 CN201220334759 CN 201220334759 CN 201220334759 U CN201220334759 U CN 201220334759U CN 202757337 U CN202757337 U CN 202757337U
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- economizer
- screw type
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- type refrigerating
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 22
- 239000003507 refrigerant Substances 0.000 claims abstract description 17
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 42
- 230000001502 supplementing effect Effects 0.000 claims description 12
- PHYFQTYBJUILEZ-IUPFWZBJSA-N triolein Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCC(OC(=O)CCCCCCC\C=C/CCCCCCCC)COC(=O)CCCCCCC\C=C/CCCCCCCC PHYFQTYBJUILEZ-IUPFWZBJSA-N 0.000 claims description 9
- 239000010687 lubricating oil Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 abstract description 20
- 238000001704 evaporation Methods 0.000 abstract description 4
- 238000004781 supercooling Methods 0.000 abstract description 2
- 239000013589 supplement Substances 0.000 abstract 2
- 238000001816 cooling Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009183 running Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
A screw type refrigeration compressor unit for an economizer comprises a screw type refrigeration compressor, an oil separator, an oil cooler, an oil coarse filter, an oil pump and an oil fine filter which are all connected through oil circulation pipelines and valves and are matched with an evaporator and a condenser to form a single-stage screw type refrigeration compression system. The screw type refrigeration compressor unit for the economizer further comprises an economizer assembly and an economizer air supplement port arranged on the screw type refrigeration compressor, an output end of the condenser is connected with a high pressure liquid inlet of the economizer assembly, a refrigerant input end of the evaporator is connected with a throttling liquid supplying port of the economizer assembly through a throttling element, and an economizer air supplement port of the screw type refrigeration compressor is connected with a low pressure air returning port of the economizer assembly. The screw type refrigeration compressor unit for the economizer has the advantages of being capable of directly reducing temperature of refrigerant condensing liquid to enable the refrigerant condensing liquid to produce super-cooling degree so as to greatly improve refrigerating capacity and refrigerating coefficient. In addition, the lower the evaporating temperature is, the more obvious the refrigerating effect is. The screw type refrigeration compressor unit for the economizer is particularly suitable for economical operation under working conditions of medium and low temperature.
Description
Technical field
The utility model relates to refrigeration compressor set, refers to particularly a kind of economizer screw type refrigerating compressor group.
Background technology
The screw type refrigerating compressor group is comprised of parts such as screw type refrigerating compressor, main motor, shaft coupling, oil eliminator, oil cooler, oily coarse filter, olein filter, oil pump, oil circuit piping and valves, is widely used in the industries such as refrigeration, air-conditioning, chemical industry, food, medicine.At present, existing screw type refrigerating compressor group and evaporimeter, condenser and restricting element form the single-stage refrigeration cycle system, it is shown in Figure 1 that its structure and operation principle such as this Figure of description partly provide: main motor 4 is by 2 runnings of shaft coupling 3 drive screw formula refrigeration compressors, screw type refrigerating compressor 2 sucks cold-producing medium by air-breathing stop valve 1 from evaporimeter 13, mix with the lubricating oil in entering simultaneously screw type refrigerating compressor 2, after the compressed acting, be discharged into together in the oil eliminator 5, realization lubricating oil separates with refrigerant vapour.The refrigerant vapour of separating from oil eliminator 5, enter in the condenser 11 through exhaust stop valve 6, be condensed into middle temperature highly pressurised liquid, become low-temp low-pressure liquid through restricting element 12 again, low-temp low-pressure liquid absorbs heat in evaporimeter 13 and is boiling evaporated into steam, enter screw type refrigerating compressor 2 by air-breathing stop valve 1 again, finish single-stage refrigeration cycle.Lubricating oil from oil eliminator 5 is separated then passes through oil cooler 7, oily coarse filter 10, oil pump 9 and olein filter 8 successively, and circulation is to screw type refrigerating compressor 2 fuel feeding.
Above-mentioned screw type refrigerating compressor group is mainly used in height, middle temperature cooling condition.In this unit is applied to, during worst cold case, because the ratio of pressure at expulsion and pressure of inspiration(Pi) reaches about 15, volumetric efficiency is lower, refrigerating capacity descends, coefficient of performance of refrigerating is less than l.5, so economy is relatively poor, limited its in, the application of worst cold case refrigerating field.
Technical scheme
The purpose of this utility model be exactly to provide a kind of in, can significantly improve the economizer screw type refrigerating compressor group of refrigerating capacity and coefficient of refrigerating performance under the worst cold case.
For achieving the above object, the economizer screw type refrigerating compressor group that the utility model is designed, comprise the screw type refrigerating compressor, oil eliminator, oil cooler, oily coarse filter, oil pump and the olein filter that link to each other with valve by oil circuit piping, they match with evaporimeter and condenser and form single stage screw formula refrigeration compression system.The air entry of described screw type refrigerating compressor links to each other with the cold-producing medium output of evaporimeter by air-breathing stop valve, the exhaust outlet of described screw type refrigerating compressor links to each other with the input of oil eliminator, and the lubricating oil output of described oil eliminator links to each other with the oil-feed port of screw type refrigerating compressor with the olein filter by oil cooler, oily coarse filter, oil pump successively.The refrigerant vapour output of described oil eliminator links to each other with the input of condenser by the exhaust stop valve, its special character is: it also comprises economizer assembly and the economizer gas supplementing opening that is arranged on the described screw type refrigerating compressor, the output of described condenser links to each other with the high pressure inlet of economizer assembly, the cold-producing medium input of described evaporimeter links to each other with the throttling supply opening of economizer assembly by restricting element, and the economizer gas supplementing opening of described screw type refrigerating compressor links to each other with the low pressure gas returning port of economizer assembly.
Further, described economizer assembly is made of assistant throttle component and shell-and-tube economizer, the output of described condenser is divided into two-way, one the tunnel directly links to each other with the high pressure inlet of shell-and-tube economizer, another road links to each other with the low pressure supply opening of shell-and-tube economizer by assistant throttle component, the cold-producing medium input of described evaporimeter links to each other with the throttling supply opening of shell-and-tube economizer by restricting element, and the economizer gas supplementing opening of described screw type refrigerating compressor links to each other with the low pressure gas returning port of shell-and-tube economizer.
Again further, the economizer gas supplementing opening place of described screw type refrigerating compressor is provided with the return-air stop valve, in order to stop from economizer low pressure return-air adverse current out.
The utility model arranges the economizer assembly between condenser and evaporimeter, its operation principle is directly not pass through restricting element from condenser condensed fluid out, but at first enter further cooling in the economizer, refrigerant liquid temperature out tens of degree that can descend, thus significantly improve refrigerating capacity and the coefficient of refrigerating performance of refrigeration system.The economizer assembly adopts assistant throttle component and shell-and-tube economizer, the cooling of refrigerant liquid is the low pressure refrigerant liquid that enters after the throttling of dependence assistant throttle component in the economizer, it absorbs the heat of high pressure refrigerant liquid and evaporates, and the low pressure refrigerant gas that is evaporated is sent back in the screw type refrigerating compressor recycling.
The utility model has the advantage of: existing screw type refrigerating compressor group is improved, with the economizer component application in its structure, be used with the screw type refrigerating compressor with the economizer gas supplementing opening, can directly reduce the temperature of condensation of refrigerant liquid, make condensation of refrigerant liquid produce degree of supercooling, thereby increase substantially refrigerating capacity and coefficient of refrigerating performance.And evaporating temperature is lower, refrigeration more obviously, be particularly suitable in, economical operation under the worst cold case.
Description of drawings
Fig. 1 is the common structural representation that consists of single-stage refrigeration cycle such as existing screw type refrigerating compressor group and evaporimeter, condenser, restricting element.
Fig. 2 is the common structural representation that consists of efficient single-stage refrigeration cycle such as economizer screw type refrigerating compressor group of the present utility model and evaporimeter, condenser, restricting element.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Economizer screw type refrigerating compressor group shown in the figure, main by the screw type refrigerating compressor 2 that links to each other with valve by oil circuit piping, oil eliminator 5, oil cooler 7, oily coarse filter 10, oil pump 9, olein filter 8 and economizer module composition, the economizer assembly is made of assistant throttle component 14 and shell-and-tube economizer 15 again, and they match with evaporimeter 13 and condenser 11 and form novel efficient single stage screw formula refrigeration compression system.
Screw type refrigerating compressor 2 links to each other with main motor 4 by shaft coupling 3.Be provided with the economizer gas supplementing opening on the screw type refrigerating compressor 1.The exhaust outlet of screw type refrigerating compressor 2 links to each other with the input of oil eliminator 5, and the lubricating oil output of oil eliminator 5 links to each other with the oil-feed port of olein filter 8 with screw type refrigerating compressor 2 by oil cooler 7, oily coarse filter 10, oil pump 9 successively.The refrigerant vapour output of oil eliminator 5 links to each other by the input of exhaust stop valve 6 with condenser 11.
The output of condenser 11 is divided into two-way, and one the tunnel directly links to each other with the high pressure inlet of shell-and-tube economizer 15, and another road links to each other with the low pressure supply opening of shell-and-tube economizer 15 by assistant throttle component 14.The low pressure gas returning port of shell-and-tube economizer 15 links to each other with the economizer gas supplementing opening of screw type refrigerating compressor 2 by return-air stop valve 16, and the throttling supply opening of shell-and-tube economizer 15 links to each other with the cold-producing medium input of evaporimeter 13 by restricting element 12.The cold-producing medium output of evaporimeter 13 links to each other with the air entry of screw type refrigerating compressor 2 by air-breathing stop valve 1, thereby forms the closed circuit of cold-producing medium.
Operation principle of the present utility model is such: screw type refrigerating compressor 2 sucks cold-producing medium by air-breathing stop valve 1 from evaporimeter 13, after this cold-producing medium is compressed together with lubricating oil, entered in the condenser 11 by exhaust stop valve 6 through oil eliminator 5, be condensed into middle temperature highly pressurised liquid, middle temperature highly pressurised liquid divides two-way output, lead up to the tube side heat exchange evaporation that enters shell-and-tube economizer 15 after assistant throttle component 14 decrease temperature and pressure, cold-producing medium after the evaporation enters the economizer gas supplementing opening of screw type refrigerating compressor 2 through return-air stop valve 16, it is excessively cold that another road directly enters the shell side heat exchange of shell-and-tube economizer 15, the refrigerant liquid of crossing after cold becomes low-temp low-pressure liquid through behind the restricting element 12, low-temp low-pressure liquid absorbs heat in evaporimeter 13 and is boiling evaporated into steam, enter screw type refrigerating compressor 2 by air-breathing stop valve 1 again, finish single-stage refrigeration cycle.From the lubricating oil that oil eliminator 5 is separated, pass through successively oil cooler 7, oily coarse filter 10, oil pump 9 and olein filter 8, again to screw type refrigerating compressor 2 fuel feeding.
Since from condenser 11 out warm highly pressurised liquid directly do not pass through restricting element 12, but at first enter further cooling in the shell-and-tube economizer 15, refrigerant liquid temperature out tens of degree that can descend, thus can significantly improve refrigerating capacity of the present utility model and coefficient of refrigerating performance.
Claims (3)
1. economizer screw type refrigerating compressor group, comprise the screw type refrigerating compressor (2) that links to each other with valve by oil circuit piping, oil eliminator (5), oil cooler (7), oil coarse filter (10), oil pump (9) and olein filter (8), they match with evaporimeter (13) and condenser (11) and form single stage screw formula refrigeration compression system, the air entry of described screw type refrigerating compressor (2) links to each other with the cold-producing medium output of evaporimeter (13) by air-breathing stop valve (1), the exhaust outlet of described screw type refrigerating compressor (2) links to each other with the input of oil eliminator (5), the lubricating oil output of described oil eliminator (5) is successively by oil cooler (7), oil coarse filter (10), oil pump (9) links to each other with the oil-feed port of olein filter (8) with screw type refrigerating compressor (2), the refrigerant vapour output of described oil eliminator (5) links to each other by the input of exhaust stop valve (6) with condenser (11), it is characterized in that: it also comprises economizer assembly and the economizer gas supplementing opening that is arranged on the described screw type refrigerating compressor (1), the output of described condenser (11) links to each other with the high pressure inlet of economizer assembly, the cold-producing medium input of described evaporimeter (13) links to each other with the throttling supply opening of economizer assembly by restricting element (12), and the economizer gas supplementing opening of described screw type refrigerating compressor (2) links to each other with the low pressure gas returning port of economizer assembly.
2. economizer screw type refrigerating compressor group according to claim 1, it is characterized in that: described economizer assembly is made of assistant throttle component (14) and shell-and-tube economizer (15), the output of described condenser (11) is divided into two-way, one the tunnel directly links to each other with the high pressure inlet of shell-and-tube economizer (15), another road links to each other with the low pressure supply opening of shell-and-tube economizer (15) by assistant throttle component (14), the cold-producing medium input of described evaporimeter (13) links to each other with the throttling supply opening of shell-and-tube economizer (15) by restricting element (12), and the economizer gas supplementing opening of described screw type refrigerating compressor (2) links to each other with the low pressure gas returning port of shell-and-tube economizer (15).
3. economizer screw type refrigerating compressor group according to claim 1 and 2, it is characterized in that: the economizer gas supplementing opening place of described screw type refrigerating compressor (2) is provided with return-air stop valve (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220334759 CN202757337U (en) | 2012-07-11 | 2012-07-11 | Screw type refrigeration compressor unit for economizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220334759 CN202757337U (en) | 2012-07-11 | 2012-07-11 | Screw type refrigeration compressor unit for economizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202757337U true CN202757337U (en) | 2013-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220334759 Expired - Lifetime CN202757337U (en) | 2012-07-11 | 2012-07-11 | Screw type refrigeration compressor unit for economizer |
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| Country | Link |
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| CN (1) | CN202757337U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411338A (en) * | 2013-08-26 | 2013-11-27 | 天津商业大学 | Screw compressor refrigeration cycle system with two-stage economizers |
| CN105042943A (en) * | 2015-09-01 | 2015-11-11 | 中国科学院广州能源研究所 | Medium-low-temperature hot source heat pump steam system |
| CN105910316A (en) * | 2016-05-31 | 2016-08-31 | 浙江商业机械厂有限公司 | Compressor set |
| CN105910339A (en) * | 2016-06-08 | 2016-08-31 | 郑州轻工业学院 | Double-screw compressor aerating pressure control system and method |
| CN108224826A (en) * | 2018-03-20 | 2018-06-29 | 蓝焰高科（天津）燃气技术有限公司 | Screw type water source gas-burning machine heat pump water chiller-heater unit and operation method |
| CN108800636A (en) * | 2017-05-05 | 2018-11-13 | 捷胜海洋装备股份有限公司 | A kind of refrigeration compressor set |
| CN110645727A (en) * | 2019-11-04 | 2020-01-03 | 珠海格力电器股份有限公司 | Refrigeration system and screw heat pump unit |
| CN114279945A (en) * | 2021-12-27 | 2022-04-05 | 敦煌研究院 | Test cabin body for simulating winter climate erosion full-scale test sample |
| CN114704972A (en) * | 2022-04-27 | 2022-07-05 | 冰轮环境技术股份有限公司 | Carbon dioxide cold-carrying unit for artificial stratum freezing system |
-
2012
- 2012-07-11 CN CN 201220334759 patent/CN202757337U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411338A (en) * | 2013-08-26 | 2013-11-27 | 天津商业大学 | Screw compressor refrigeration cycle system with two-stage economizers |
| CN105042943A (en) * | 2015-09-01 | 2015-11-11 | 中国科学院广州能源研究所 | Medium-low-temperature hot source heat pump steam system |
| CN105910316A (en) * | 2016-05-31 | 2016-08-31 | 浙江商业机械厂有限公司 | Compressor set |
| CN105910339A (en) * | 2016-06-08 | 2016-08-31 | 郑州轻工业学院 | Double-screw compressor aerating pressure control system and method |
| CN108800636A (en) * | 2017-05-05 | 2018-11-13 | 捷胜海洋装备股份有限公司 | A kind of refrigeration compressor set |
| CN108224826A (en) * | 2018-03-20 | 2018-06-29 | 蓝焰高科（天津）燃气技术有限公司 | Screw type water source gas-burning machine heat pump water chiller-heater unit and operation method |
| CN110645727A (en) * | 2019-11-04 | 2020-01-03 | 珠海格力电器股份有限公司 | Refrigeration system and screw heat pump unit |
| CN114279945A (en) * | 2021-12-27 | 2022-04-05 | 敦煌研究院 | Test cabin body for simulating winter climate erosion full-scale test sample |
| CN114279945B (en) * | 2021-12-27 | 2023-11-03 | 敦煌研究院 | Test cabin for simulating winter climate erosion full-scale sample |
| CN114704972A (en) * | 2022-04-27 | 2022-07-05 | 冰轮环境技术股份有限公司 | Carbon dioxide cold-carrying unit for artificial stratum freezing system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130227 |