CN105546864A - Auto-cascade vapor compression type refrigeration cycle system with evaporation subcooler - Google Patents
Auto-cascade vapor compression type refrigeration cycle system with evaporation subcooler Download PDFInfo
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- CN105546864A CN105546864A CN201610020342.9A CN201610020342A CN105546864A CN 105546864 A CN105546864 A CN 105546864A CN 201610020342 A CN201610020342 A CN 201610020342A CN 105546864 A CN105546864 A CN 105546864A
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- vaporized
- cooler
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/02—Subcoolers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses an auto-cascade vapor compression type refrigeration cycle system with an evaporation subcooler. The auto-cascade vapor compression type refrigeration cycle system comprises a compressor, a condenser and a gas-liquid separator which are sequentially connected, wherein the outlet of the gas-liquid separator is divided into two channels; in one channel, a liquid outlet of a saturated refrigerant is connected with an inlet of a first throttle mechanism and an outlet of the first throttle mechanism is connected with an evaporation side inlet of an evaporative condenser; in the other channel, a gas outlet of the saturated refrigerant is connected with an condensation side inlet of the evaporative condenser, an condensation side outlet of the evaporative condenser is connected with a high temperature side inlet of the evaporation subcooler, a high temperature side outlet of the evaporation subcooler is connected with an inlet of a second throttle mechanism, an outlet of the second throttle mechanism is connected with an inlet of an evaporator, an outlet of the evaporator is connected with an evaporation side inlet of the evaporation subcooler, an evaporation side outlet of the evaporation subcooler and an evaporation side outlet of the evaporative condenser are converged, and then connected with a gas suction opening of the compressor to complete the cycle. According to the auto-cascade vapor compression type refrigeration cycle system disclosed by the invention, the evaporation subcooler is used in the auto-cascade refrigeration cycle system, so that the performance of the auto-cascade vapor compression type refrigeration cycle system is effectively improved.
Description
Technical field
The invention belongs to refrigeration technology field, be specifically related to a kind of Auto-cascade cycle steam compressed refrigerating circulating system with vaporized cooler.
Background technology
Self-cascade refrigeration system system is a kind of refrigeration system being widely used in cryogenic refrigeration occasion, and it utilizes the characteristic of non-azeotropic refrigerant, just can realize multistage automatic cascade by single compressor, obtains lower cryogenic temperature.Relative to overlapping refrigerating cycle system, have that cost is lower, structure is simple, advantage easy to maintenance, so obtain increasing application.In the self-cascade refrigeration system system of routine, due to the temperature glide characteristic of non-azeotropic refrigerant, can there is larger temperature glide in evaporimeter, and along with the carrying out of evaporation process, the mass dryness fraction of cold-producing medium can increase gradually, and evaporating temperature will increase.And the efficiency of self-cascade refrigeration system system is often lower, become today of the main flow of social development in energy-saving and emission-reduction, the efficiency how improving self-cascade refrigeration system system becomes its important developing direction.
Summary of the invention
In order to overcome above-mentioned prior art Problems existing, the object of the present invention is to provide a kind of Auto-cascade cycle steam compressed refrigerating circulating system with vaporized cooler, by adding a vaporized cooler in self-cascade refrigeration system system, increase the degree of supercooling of cold-producing medium before throttling entering evaporimeter, the mass dryness fraction of evaporimeter is entered after reducing throttling, and then identical evaporating temperature can be realized at higher evaporating pressure, reduce the pressure ratio of compressor, reach the object of elevator system efficiency.
In order to achieve the above object, the present invention adopts following technical scheme:
A kind of Auto-cascade cycle steam compressed refrigerating circulating system with vaporized cooler, comprise the compressor 101, condenser 102 and the gas-liquid separator 103 that connect successively, the outlet of gas-liquid separator 103 is divided into two-way, the one saturated refrigerant liquid outlet in road connects the entrance of first throttle mechanism 104, and the outlet of first throttle mechanism 104 connects the evaporation side entrance of evaporative condenser 105, the saturated refrigerant gas outlet in another road connects the condensation side entrance of evaporative condenser 105, the condensation side outlet of evaporative condenser 105 connects the high temperature side entrance of vaporized cooler 106, the high temperature side outlet of vaporized cooler 106 connects the entrance of second throttle body 107, the outlet of second throttle body 107 is connected with the entrance of evaporimeter 108, the outlet of evaporimeter 108 is connected with the evaporation side entrance of vaporized cooler 106, the evaporation side outlet of vaporized cooler 106 exports with the evaporation side of evaporative condenser 105 and converges, then the air entry of compressor 101 is connected to, complete circulation.
Compared to the Auto-cascade cycle steam compressed refrigerating circulating system of routine, the present invention is by using a vaporized cooler in systems in which, increase the degree of supercooling of cold-producing medium before throttling entering evaporimeter, the mass dryness fraction of evaporimeter is entered after reducing throttling, and then identical evaporating temperature can be realized at higher evaporating pressure, reduce the pressure ratio of compressor, reach the object of elevator system efficiency, and it is simple that the program also has structure, advantage with low cost.In a word, this system is a kind of economy, effective, feasible improving countermeasure, effectively can improve the performance of Auto-cascade cycle steam compressed refrigerating circulating system, promotes the development of Auto-cascade cycle steam compressed refrigerating circulating system power-saving technology.
Accompanying drawing explanation
Fig. 1 is a kind of Auto-cascade cycle steam compressed refrigerating circulating system schematic diagram with vaporized cooler of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, the present invention is a kind of Auto-cascade cycle steam compressed refrigerating circulating system with vaporized cooler, comprises the compressor 101, condenser 102 and the gas-liquid separator 103 that connect successively, the outlet of gas-liquid separator 103 is divided into two-way, and a saturated refrigerant liquid outlet in road connects the entrance of first throttle mechanism 104, and the outlet of first throttle mechanism 104 connects the evaporation side entrance of evaporative condenser 105, the saturated refrigerant gas outlet in another road connects the condensation side entrance of evaporative condenser 105, the condensation side outlet of evaporative condenser 105 connects the high temperature side entrance of vaporized cooler 106, the high temperature side outlet of vaporized cooler 106 connects the entrance of second throttle body 107, the outlet of second throttle body 107 is connected with the entrance of evaporimeter 108, the outlet of evaporimeter 108 is connected with the evaporation side entrance of vaporized cooler 106, the evaporation side outlet of vaporized cooler 106 exports with the evaporation side of evaporative condenser 105 and converges, then the air entry of compressor 101 is connected to, complete circulation.
As shown in Figure 1, the course of work of a kind of Auto-cascade cycle steam compressed refrigerating circulating system with vaporized cooler of the present invention is: the superheated refrigerant steam (in figure 2 places) that compressor 101 exports enters condenser 102 partial condensation becomes two phase refrigerant fluid (in figure 3 places), this two phase refrigerant fluid is divided into two-way in gas-liquid separator 103: a saturated refrigerant liquid in road (in figure 5 places) enters throttling in first throttle mechanism 104 becomes two phase refrigerant fluid (in figure 6 places), this two phase refrigerant fluid continues to enter evaporation in evaporative condenser 105 and becomes saturated or superheated refrigerant steam (in figure 7 places), the saturated refrigerant vapour in another road (in figure 4 places) enters evaporative condenser 105 condensation to be become saturated or crosses cold refrigerant liquid (in figure 8 places), this is saturated or cross cold refrigerant liquid and enter in vaporized cooler 106 and continued coldly to become cold refrigerant liquid (in figure 8x point place), this crosses the throttling in second throttle body 107 of cold refrigerant liquid becomes two phase refrigerant fluid (in figure 9 places), this two phase refrigerant fluid enters evaporimeter 108 vaporized in part becomes two phase refrigerant fluid (in figure 10x point place), this two phase refrigerant fluid enters evaporation in vaporized cooler becomes saturated or superheated refrigerant steam (in figure 10 places), saturated or the superheated refrigerant steam (locating for 7 in figure) that this saturated or superheated refrigerant steam and evaporative condenser 105 export is merged into as saturated or superheated refrigerant steam (locating in figure) at 1, finally get back to compressor, complete circulation.
Claims (3)
1. be with an Auto-cascade cycle steam compressed refrigerating circulating system for vaporized cooler, comprise the compressor (101), condenser (102) and the gas-liquid separator (103) that connect successively, it is characterized in that: the outlet of gas-liquid separator (103) is divided into two-way, the one saturated refrigerant liquid outlet in road connects the entrance of first throttle mechanism (104), and the outlet of first throttle mechanism (104) connects the evaporation side entrance of evaporative condenser (105), the saturated refrigerant gas outlet in another road connects the condensation side entrance of evaporative condenser (105), the condensation side outlet of evaporative condenser (105) connects the high temperature side entrance of vaporized cooler (106), the high temperature side outlet of vaporized cooler (106) connects the entrance of second throttle body (107), the outlet of second throttle body (107) connects the entrance of evaporimeter (108), the outlet of evaporimeter (108) connects the evaporation side entrance of vaporized cooler (106), the evaporation side outlet of vaporized cooler (106) exports with the evaporation side of evaporative condenser (105) and converges, then the air entry of compressor (101) is connected to, complete circulation.
2. the Auto-cascade cycle steam compressed refrigerating circulating system of the vaporized cooler of band according to claim 1, it is characterized in that: adopt a vaporized cooler (106) to increase the degree of supercooling of cold-producing medium before throttling entering evaporimeter in systems in which, the mass dryness fraction of evaporimeter is entered after reducing throttling, and then identical evaporating temperature can be realized at higher evaporating pressure, reduce the pressure ratio of compressor, reach the object of elevator system efficiency.
3. the Auto-cascade cycle steam compressed refrigerating circulating system of the vaporized cooler of band according to claim 1 and 2, it is characterized in that: in vaporized cooler, the evaporation that will come from the two phase refrigerant fluid of evaporimeter (108) carrys out the cold refrigerant liquid from the outlet of evaporative condenser (105) condensation side of further mistake as low-temperature receiver, increase the degree of supercooling before its throttling, reduce the mass dryness fraction after throttling.
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| CN201610020342.9A CN105546864B (en) | 2016-01-13 | 2016-01-13 | A kind of Auto-cascade cycle steam compressed refrigerating circulating system of band evaporation subcooler |
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| CN201610020342.9A CN105546864B (en) | 2016-01-13 | 2016-01-13 | A kind of Auto-cascade cycle steam compressed refrigerating circulating system of band evaporation subcooler |
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| CN105546864B CN105546864B (en) | 2018-05-18 |
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Cited By (9)
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|---|---|---|---|---|
| CN106642681A (en) * | 2016-12-20 | 2017-05-10 | 东莞市车景汽车配件制造有限公司 | Air-energy water heater circulation system and operating method thereof |
| CN106871472A (en) * | 2016-12-27 | 2017-06-20 | 广东技术师范学院 | A kind of New Refrigerating Cycle device for obtaining multiple different temperatures |
| CN109425140A (en) * | 2017-09-01 | 2019-03-05 | 青岛海尔特种电冰柜有限公司 | Refrigerating circuit and refrigeration equipment based on non-azeotropic mixed working medium |
| CN109737621A (en) * | 2018-12-05 | 2019-05-10 | 江苏白雪电器股份有限公司 | Auto-cascading refrigeration system |
| CN110260549A (en) * | 2019-07-03 | 2019-09-20 | 上海沛芾航天科技发展有限公司 | Environmental test chamber auto-cascading refrigeration system |
| CN112739961A (en) * | 2018-09-28 | 2021-04-30 | 三菱电机株式会社 | Outdoor unit of refrigeration cycle device, and air conditioning device |
| CN114034160A (en) * | 2021-12-14 | 2022-02-11 | 郑州大学 | Novel two-stage rectification self-cascade natural gas liquefaction system and control method thereof |
| CN114893923A (en) * | 2022-04-16 | 2022-08-12 | 郑州大学 | Working medium component concentration active regulation-based self-overlapping system and control method |
| CN115218560A (en) * | 2021-04-15 | 2022-10-21 | 芜湖美智空调设备有限公司 | Refrigerant circulation system and air conditioner |
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| CN110260549A (en) * | 2019-07-03 | 2019-09-20 | 上海沛芾航天科技发展有限公司 | Environmental test chamber auto-cascading refrigeration system |
| CN115218560A (en) * | 2021-04-15 | 2022-10-21 | 芜湖美智空调设备有限公司 | Refrigerant circulation system and air conditioner |
| CN114034160A (en) * | 2021-12-14 | 2022-02-11 | 郑州大学 | Novel two-stage rectification self-cascade natural gas liquefaction system and control method thereof |
| CN114893923A (en) * | 2022-04-16 | 2022-08-12 | 郑州大学 | Working medium component concentration active regulation-based self-overlapping system and control method |
| CN114893923B (en) * | 2022-04-16 | 2023-05-26 | 郑州大学 | Automatic overlapping system based on active regulation and control of concentration of working medium components and control method |
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