CN105202793A - Vortex-tube-bearing CO2 double-stage compressive refrigerating system - Google Patents
Vortex-tube-bearing CO2 double-stage compressive refrigerating system Download PDFInfo
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- CN105202793A CN105202793A CN201510527294.8A CN201510527294A CN105202793A CN 105202793 A CN105202793 A CN 105202793A CN 201510527294 A CN201510527294 A CN 201510527294A CN 105202793 A CN105202793 A CN 105202793A
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Abstract
The invention discloses a vortex-tube-bearing CO2 double-stage compressive refrigerating system which is mainly composed of a low-pressure compressor, an intermediate cooler, a high-pressure compressor, a vortex tube, an auxiliary cooler, a gas cooler, an evaporator and the like, wherein an outlet of the high-pressure compressor is connected with an inlet of the gas cooler; an outlet of the gas cooler is connected with an inlet of a gas-liquid separator; a liquid outlet of the gas-liquid separator is divided into two paths, one path is connected to an inlet of the evaporator, and the other path is connected to an inlet of the vortex tube; a cold end gas outlet of the vortex tube is connected with the inlet of the evaporator; an outlet of the evaporator is connected with the low-pressure compressor; hot end gas of the vortex tube flows through an auxiliary heat exchanger and the outlet of the low-pressure compressor, and is connected in parallel to an inlet of the intermediate cooler; and the gas cooled by the intermediate cooler is connected with an inlet of the high-pressure compressor. The expansive pressure reduction of the vortex tube is utilized to reduce the irreversible loss of the system.
Description
Technical field
The present invention relates to refrigeration technology field, in particular, relate to a kind of CO with vortex tube
2double-stage compressive refrigerating system.
Background technology
Patent of the present invention is based on following background: the environmental pollution that society is serious and shortage of resources, and natural refrigerant substitutes and the performance raising of refrigeration system is researcher's problem demanding prompt solution.CO
2have good thermal performance, current more application is in the higher air conditioner heat pump system of evaporating temperature.
Existing CO
2in refrigeration system, the throttling process loss of reducing pressure by regulating flow element is comparatively large, and the coefficient of performance of system is lower.Therefore, how to reduce restriction loss, make throttling process close to isentropic expansion process, improve the efficiency of the circulatory system, economize energy is problem demanding prompt solution.
The coefficient of performance of single stage compress kind of refrigeration cycle is lower, to CO
2trans critical cycle system is carried out performance optimization and is extremely necessary.Two-stage Compression reduction delivery temperature and compressor wasted work is adopted to be improve CO
2a kind of effective way of trans critical cycle efficiency.
Vortex tube is the simple energy separation device of kind of structure, is made up of nozzle, minor air cell, cold and hot two ends pipe etc.During work, gases at high pressure enter nozzle by air inlet pipe, after expanding in nozzle and accelerating, tangentially minor air cell is entered with very high speed, air-flow forms high speed vortex in minor air cell, central area in vortex tube forms reflux gas, after eddy current conversion, be separated into unequal two air-flows of temperature.Wherein, the reflux airflow being in centre is flowed out by cold junction orifice plate, form cold airflow, and the air-flow being in outer position flows out from hot junction through hot junction, form thermal current, that Here it is is so-called " blue gram effect ', vortex tube is at minitype air conditioner in recent years, and portable air adjusting device obtains application.
Summary of the invention
The object of the invention is for existing CO
2in the problem of the refrigerating efficiency raising of double-stage compressive refrigerating system, provide a kind of CO with vortex tube
2double-stage compressive refrigerating system, the liquid utilizing gas-liquid separator separates to go out and the isolated cold junction gas refrigeration of gases at high pressure eddy expansion, can reduce restriction loss, effectively improve the performance of system, protection of the environment, economize energy.
The technical scheme adopted for realizing object of the present invention is:
A kind of CO with vortex tube
2double-stage compressive refrigerating system, comprises low-pressure stage compressor, gas cooler, vortex tube, gas-liquid separator, high pressure stage compressor, supplementary heat exchanger, Intermediate Heat Exchanger and evaporimeter, the outlet of described high pressure stage compressor is connected with the entrance of described gas cooler, the outlet of described gas cooler is connected with described gas-liquid separator entrance, described gas-liquid separator is divided into two-way outlet, gas vent is connected with the inlet connection of described vortex tube, liquid outlet is taken over described evaporator inlet and is connected, described vortex tube cold side outlet is connected with described evaporator inlet with after the parallel connection of described gas-liquid separator liquid outlet, described evaporator outlet is connected with described low-pressure stage suction port of compressor, the outlet of described vortex tube hot junction is connected with described supplementary heat exchanger entrance, described supplementary heat exchanger outlet is connected with described Intermediate Heat Exchanger entrance with after the parallel connection of low-pressure stage compressor outlet, described Intermediate Heat Exchanger outlet is connected with described high pressure stage compressor entrance.
Described vortex tube hot junction gas vent is in parallel with low-pressure stage compressor outlet through supplementary heat exchanger.
Described supplementary heat exchanger and Intermediate Heat Exchanger are all carry out heat exchange with surrounding environment.
Compared with prior art, advantage of the present invention is:
1, a kind of CO with vortex tube of the present invention
2double-stage compressive refrigerating system, the liquid utilizing gas-liquid separator separates to go out and the isolated cold junction gas refrigeration of gases at high pressure eddy expansion, can improve the performance of system effectively.
2, a kind of CO with vortex tube of the present invention
2double-stage compressive refrigerating system, has that structure is simple, easy for installation, working stability, economize energy, protection of the environment.
For realizing the object of the present invention, be achieved by the following technical solutions:
A kind of CO with vortex tube
2double-stage compressive refrigerating system, is characterized in that, comprises low-pressure stage compressor, high pressure stage compressor, gas cooler, gas-liquid separator, vortex tube, auxiliary cooler, intercooler and evaporimeter, wherein: the outlet of described high pressure stage compressor is connected with the entrance of described gas cooler, the outlet of described gas cooler is connected with the entrance of described gas-liquid separator, described gas-liquid separator gas vent is connected with described vortex tube inlet, described evaporator inlet end is linked into after described gas-liquid separator liquid outlet is in parallel with described vortex tube cold side outlet, the outlet of described vortex tube hot junction is connected with described auxiliary cooler entrance, described intercooler arrival end is linked into after described auxiliary cooler outlet is in parallel with described low-pressure stage compressor outlet, described intercooler outlet is connected with described high pressure stage compressor entrance.
Described a kind of CO with vortex tube
2double-stage compressive refrigerating system, is characterized in that, the outlet of vortex tube hot junction returns high pressure stage compressor through auxiliary cooler.
Described a kind of CO with vortex tube
2double-stage compressive refrigerating system, is characterized in that, accesses evaporator inlet end after gas-liquid separator liquid outlet is in parallel with vortex tube cold side outlet.
Accompanying drawing explanation
Fig. 1 is a kind of CO with vortex tube
2double-stage compressive refrigerating system.
In figure, each component names is as follows: 1 evaporimeter; 2 low-pressure stage compressors; 3 Intermediate Heat Exchangers; 4 high pressure stage compressor; 5 air coolers; 6 gas-liquid separators; 7 vortex tubes; 8 vortex tube cold junctions; 9 vortex tube hot junctions; 10 supplementary heat exchangers.
Detailed description of the invention
1 be described as follows by reference to the accompanying drawings:
The object lesson that this explanation is lifted only is not used in for explaining explanation and limits the scope of the invention.
1. equipment connection mode
The outlet of described high pressure stage compressor 4 is connected with the entrance of described gas cooler 5, the outlet of described gas cooler 5 is connected with described gas-liquid separator 6 entrance, described gas-liquid separator 6 is divided into two-way outlet, gas vent is connected with the entrance of described vortex tube 7, liquid outlet is connected with described evaporimeter 1 entrance, described vortex tube cold junction 8 outlet is connected with described evaporimeter 1 entrance with after the parallel connection of described gas-liquid separator 6 liquid outlet, described evaporimeter 1 outlet is connected with described low-pressure stage compressor 2 entrance, the outlet of described vortex tube hot junction 9 is connected with described supplementary heat exchanger 10 entrance, described supplementary heat exchanger 10 exports and low-pressure stage compressor 2 export in parallel after be linked into described Intermediate Heat Exchanger 3 entrance, described Intermediate Heat Exchanger 3 outlet is connected with described high pressure compressor 4 entrance.
2. system operation mode
When the system is operated, high temperature and high pressure gas after high pressure stage compressor 4 compresses enters into the cold-producing medium that air cooler 5 is transformed into gas-liquid two-phase, enter into gas-liquid separator 6, one road is isolated liquid and is directly entered evaporimeter 1, another road gases at high pressure enter into vortex tube 7, High Rotation Speed flowing in minor air cell, isolate cold air and hot gas, the liquid that cold junction gas 8 and gas-liquid separator separates obtain collaborates to enter evaporimeter 1, refrigerant liquid evaporation endothermic in evaporimeter 1, for cooling space provides low-temperature receiver, enter low-pressure stage compressor 2 again, collaborate to enter into intercooler 3 after auxiliary cooler 10 with vortex tube bulking effect isolated hot junction gas 9, enter into high pressure stage compressor 4 through the cold-producing medium of intercooler 3 and complete a circulation.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. the CO with vortex tube
2double-stage compressive refrigerating system, is characterized in that, comprises low-pressure stage compressor, high pressure stage compressor, gas cooler, gas-liquid separator, vortex tube, auxiliary cooler, intercooler and evaporimeter; Wherein:
The outlet of described high pressure stage compressor is connected with the entrance of described gas cooler, the outlet of described gas cooler is connected with the entrance of described gas-liquid separator, described gas-liquid separator gas vent is taken over described vortex tube inlet and is connected, described gas-liquid separator liquid outlet is in parallel with described vortex tube cold side outlet accesses described evaporator inlet end, the outlet of described vortex tube hot junction is connected with described auxiliary cooler entrance, described auxiliary cooler outlet is in parallel with described low-pressure stage compressor outlet accesses described intercooler arrival end, the described intercooler port of export is connected with described high pressure stage compressor entrance.
2. a kind of CO with vortex tube according to claim 1
2double-stage compressive refrigerating system, is characterized in that, the outlet of vortex tube hot junction returns high pressure stage compressor through auxiliary cooler.
3. a kind of CO with vortex tube according to claim 1
2double-stage compressive refrigerating system, is characterized in that, accesses evaporator inlet after gas-liquid separator liquid outlet is in parallel with vortex tube cold side outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510527294.8A CN105202793A (en) | 2015-08-25 | 2015-08-25 | Vortex-tube-bearing CO2 double-stage compressive refrigerating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510527294.8A CN105202793A (en) | 2015-08-25 | 2015-08-25 | Vortex-tube-bearing CO2 double-stage compressive refrigerating system |
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| CN105202793A true CN105202793A (en) | 2015-12-30 |
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| CN201510527294.8A Pending CN105202793A (en) | 2015-08-25 | 2015-08-25 | Vortex-tube-bearing CO2 double-stage compressive refrigerating system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546090A (en) * | 2016-10-26 | 2017-03-29 | 上海理工大学 | Hot and cold stream hybrid vortex pipe drying system |
| CN107144040A (en) * | 2017-05-26 | 2017-09-08 | 天津大学 | Multi-stage compression double parallel piston type carbon dioxide heat pump system |
| CN108050722A (en) * | 2017-11-17 | 2018-05-18 | 浙江大学宁波理工学院 | Utilize a throttle low temperature refrigeration system of energy separation effect inside vortex tube precooling |
| CN109282538A (en) * | 2018-11-26 | 2019-01-29 | 珠海格力电器股份有限公司 | Gas-liquid separator and second throttle cooling cycle system |
| CN110057125A (en) * | 2019-05-21 | 2019-07-26 | 天津商业大学 | A kind of CO of double vortex tube couplings2Double-stage compressive refrigerating system |
| CN114951547A (en) * | 2022-03-02 | 2022-08-30 | 中国机械科学研究总院集团有限公司 | Sand discharge medium modification method and device for cutting and forming of frozen sand mold |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546090A (en) * | 2016-10-26 | 2017-03-29 | 上海理工大学 | Hot and cold stream hybrid vortex pipe drying system |
| CN106546090B (en) * | 2016-10-26 | 2019-02-15 | 上海理工大学 | Hot and cold stream hybrid vortex pipe drying system |
| CN107144040A (en) * | 2017-05-26 | 2017-09-08 | 天津大学 | Multi-stage compression double parallel piston type carbon dioxide heat pump system |
| CN107144040B (en) * | 2017-05-26 | 2023-09-08 | 天津大学 | Multistage compression double-compressor parallel piston type carbon dioxide heat pump system |
| CN108050722A (en) * | 2017-11-17 | 2018-05-18 | 浙江大学宁波理工学院 | Utilize a throttle low temperature refrigeration system of energy separation effect inside vortex tube precooling |
| CN108050722B (en) * | 2017-11-17 | 2020-06-23 | 浙江大学宁波理工学院 | Primary throttling low-temperature refrigeration system for precooling by using energy separation effect of vortex tube |
| CN109282538A (en) * | 2018-11-26 | 2019-01-29 | 珠海格力电器股份有限公司 | Gas-liquid separator and second throttle cooling cycle system |
| CN110057125A (en) * | 2019-05-21 | 2019-07-26 | 天津商业大学 | A kind of CO of double vortex tube couplings2Double-stage compressive refrigerating system |
| CN110057125B (en) * | 2019-05-21 | 2023-10-20 | 天津商业大学 | Double vortex tube coupled CO 2 Two-stage compression refrigeration system |
| CN114951547A (en) * | 2022-03-02 | 2022-08-30 | 中国机械科学研究总院集团有限公司 | Sand discharge medium modification method and device for cutting and forming of frozen sand mold |
| CN114951547B (en) * | 2022-03-02 | 2024-04-09 | 中国机械科学研究总院集团有限公司 | Sand discharge medium modification method and device for frozen sand mold cutting forming |
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Application publication date: 20151230 |
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