CN109425140A - Refrigerating circuit and refrigeration equipment based on non-azeotropic mixed working medium - Google Patents
Refrigerating circuit and refrigeration equipment based on non-azeotropic mixed working medium Download PDFInfo
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- CN109425140A CN109425140A CN201710779117.8A CN201710779117A CN109425140A CN 109425140 A CN109425140 A CN 109425140A CN 201710779117 A CN201710779117 A CN 201710779117A CN 109425140 A CN109425140 A CN 109425140A
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- subcooler
- gas
- compressor
- outlet
- condenser
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Classifications
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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
- F25B6/00—Compression machines, plants or systems, with several condenser circuits
- F25B6/02—Compression machines, plants or systems, with several condenser circuits arranged in parallel
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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
-
- 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
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/07—Details of compressors or related parts
- F25B2400/075—Details of compressors or related parts with parallel compressors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention discloses a kind of refrigerating circuit based on non-azeotropic mixed working medium and refrigeration equipments.Refrigerating circuit based on non-azeotropic mixed working medium, including the first compressor, the second compressor, the first condenser, the second condenser, the first subcooler, evaporator, gas-liquid separator first throttling device and second throttling device；The outlet of a first compressor and a second compressor is separately connected the import of the first condenser, the import of condenser connection gas-liquid separator, the gas outlet of gas-liquid separator connects the import of the second condenser, the outlet of second condenser passes sequentially through the first subcooler and connect with first throttling device, first throttling device connects evaporator, and evaporator outlet connects the first compressor inlet；The liquid outlet of gas-liquid separator connects second throttling device, and second throttling device is connect by the first subcooler with the import of the second compressor.It realizes the energy consumption for reducing the refrigerating circuit based on non-azeotropic mixed working medium and improves efficiency.
Description
Technical field
The present invention relates to refrigeration systems more particularly to a kind of refrigerating circuit and refrigeration based on non-azeotropic mixed working medium to set
It is standby.
Background technique
Currently, non-azeotropic mixed working medium is mixed by the pure matter of a variety of different boilings, deposited in evaporation and condensation process
In the characteristics such as temperature glide and component separation.Refrigerating circuit using non-azeotropic mixed working medium as refrigerant when, condenser with
There are temperature glides in evaporator, can effectively reduce the heat transfer irreversible loss of condenser and evaporator, improve the effect of circulation
Rate, meanwhile, the dominant complementation effect of each pure refrigerants also may be implemented in mixed non-azeotropic refrigerant itself, so non-in recent years
Azeotropic working medium is more and more widely used.But refrigerating circuit in the prior art is transported using non-azeotropic mixed working medium
During row, it is only capable of the temperature glide characteristic using non-azeotropic mixed working medium, and its Component Separation Performance of Ternary cannot be efficiently used, nothing
Method makes full use of the advantages of non-azeotropic mixed working medium, causes energy consumption higher.How designing one kind, low energy consumption to improve the system of efficiency
Cold loop is the technical problems to be solved by the invention.
Summary of the invention
The present invention provides a kind of refrigerating circuit based on non-azeotropic mixed working medium and refrigeration equipments, and realizing reduces based on non-
The energy consumption of the refrigerating circuit of azeotropic mixed working medium simultaneously improves efficiency.
To reach above-mentioned technical purpose, the present invention is implemented with the following technical solutions:
A kind of refrigerating circuit based on non-azeotropic mixed working medium, including the first compressor, the second compressor, the first condenser,
Two condensers, the first subcooler, evaporator, gas-liquid separator first throttling device and second throttling device；First compression
The outlet of machine and second compressor is separately connected the import of first condenser, and the condenser connects the gas-liquid point
Import from device, the gas outlet of the gas-liquid separator connect the import of second condenser, and second condenser goes out
Mouth passes sequentially through first subcooler and connect with the first throttling device, and the first throttling device connects the evaporator
Import, the evaporator outlet connect first compressor inlet；The second throttling of liquid outlet connection of the gas-liquid separator
Device, the second throttling device are connect by first subcooler with the import of second compressor.
It further, further include the second subcooler, the outlet of the evaporator passes through second subcooler and described the
The import of one compressor connects, and the liquid outlet of the gas-liquid separator passes through second subcooler and the second throttling device
Connection.
Further, further include third subcooler, the liquid outlet of the gas-liquid separator by the third subcooler with
The second subcooler connection, first subcooler are connect by third subcooler with the import of second compressor.
Further, it is cold successively to pass through described second for the saturation refrigerant gas of the gas outlet output of the gas-liquid separator
Condenser, the hot-fluid side of first subcooler, the first throttling device, the evaporator, second subcooler it is cold
It is entered after fluid side in first compressor.
Further, the saturation refrigerant liquid of the liquid outlet output of the gas-liquid separator successively passes through the third mistake
The hot-fluid side of cooler and the hot-fluid side of second subcooler, the second throttling device, first subcooler it is cold
Fluid side, the third subcooler cold flow side after enter arrive second compressor.
The present invention also provides a kind of refrigeration equipments, including the above-mentioned refrigerating circuit based on non-azeotropic mixed working medium.
Compared with prior art, the advantages and positive effects of the present invention are: by using azeotrope refrigerant evaporation and it is cold
The Component Separation Performance of Ternary of solidifying process, completes the separation process of a component in condensation process, so that from gas-liquid separator point
The refrigerant vapour rich in low boiling component separated out enters evaporator after further condenser, to reach lifting system
Evaporating pressure, and then the purpose of lifting system performance；Simultaneously as the circuit using double-compressor parallel operation by the way of, institute
The throttle degree of two-way fluid after component separation can be adjusted separately according to operating condition, the reduction system of maximum possible
Restriction loss realizes the energy consumption for reducing the refrigerating circuit based on non-azeotropic mixed working medium and improves efficiency.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is that the present invention is based on the schematic diagrams of the refrigerating circuit embodiment of non-azeotropic mixed working medium.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Figure 1, the present embodiment is based on the refrigerating circuit of non-azeotropic mixed working medium by the first compressor 101, the second pressure
Contracting machine 102, the first condenser 103, gas-liquid separator 104, the second condenser 105, the first subcooler 106, first throttling device
107, evaporator 108, the second subcooler 109, the part such as third subcooler 110 and second throttling device 111 forms.First compression
The outlet of machine 101 and the outlet of the second compressor 102 connect the import of the first condenser 103, the outlet of the first condenser 103 after converging
The import of gas-liquid separator 104 is connected, the gas outlet of the gas-liquid separator 104 connects the import of second condenser 105,
The outlet of second condenser 105 passes sequentially through first subcooler 106 and connect with the first throttling device 107, institute
It states first throttling device 107 and connects 108 import of evaporator, the outlet of evaporator 108 connects first compressor 101
Import；The liquid outlet of the gas-liquid separator 104 connects second throttling device 111, and the second throttling device 111 passes through described
First subcooler 106 is connect with the import of second compressor 102.
Specifically, the present embodiment is compressed based on the first compressor of refrigerating circuit 101 of non-azeotropic mixed working medium and second
The refrigerant that machine 102 exports, which converges, to be entered in the first condenser 103, and refrigerant is after 103 condensation process of the first condenser
Gas-liquid separator 104 is entered, gas-liquid separator 104 is by the saturation refrigerant gas in refrigerant and is saturated refrigerant liquid
It separates, carries out after further condenser wherein saturation refrigerant gas again passes by the second condenser 105 using first
Throttling set 107 enters in evaporator 108, so as to reach lifting system evaporating pressure, and then lifting system performance
Purpose；And it is saturated refrigerant liquid and enters by the throttling of second throttling device 111 processing and after the heat exchange of the first subcooler 106
Circulation is completed into the second compressor 102.Preferably, refrigerating circuit of the present embodiment based on non-azeotropic mixed working medium further includes
Two subcoolers 109, the import that the outlet of the evaporator 108 passes through second subcooler 109 and first compressor 101
Connection, the liquid outlet of the gas-liquid separator 104 are connect by second subcooler 109 with the second throttling device 111,
It is exchanged heat by the second subcooler 109, the suction temperature of the first compressor can be improved, more effectively to improve efficiency.More
Further, refrigerating circuit of the present embodiment based on non-azeotropic mixed working medium further includes third subcooler 110, the gas-liquid separation
The liquid outlet of device 104 is connect by the third subcooler 110 with second subcooler 109, and first subcooler 106 is logical
Third subcooler 110 is crossed to connect with the import of second compressor 102.Specifically, the outlet of gas-liquid separator 104 is divided into two
Road: being saturated the entrance that refrigerant gas outlet connects the second condenser 105 all the way, and the outlet of the second condenser 105 passes through the first mistake
The entrance of the hot-fluid side connection first throttling device 107 of cooler 106, the outlet of first throttling device 107 connects evaporator 108
The outlet of entrance, evaporator 108 is connected by the cold flow side of the second subcooler 109 with the entrance of the first compressor 101；Separately
Saturation refrigerant liquid outlet passes sequentially through the hot-fluid side of third subcooler 110 and the hot fluid of the second subcooler 109 all the way
Side is connected with the entrance of second throttling device 111, and the outlet of second throttling device 111 passes sequentially through the first subcooler 106
The entrance that cold flow side connects the second compressor 102 with the cold flow side of third subcooler 110 completes circulation.By cold first
One gas-liquid separator 104 is set between condenser 103 and the second condenser 105, a component is completed in condensation process
Separation process, so that the refrigerant vapour rich in low boiling component isolated from gas-liquid separator 104 is by further condensation
Evaporator 108 is eventually entered into, to reach lifting system evaporating pressure, and then the purpose of lifting system performance.
Wherein, the overall function of subcooler is to increase the heat exchange amount of evaporator, improves refrigeration system refrigerating efficiency；Subcooler
106 effects are mix refrigerants after the separation of gas-liquid separator 104, and the gas refrigerant rich in low boiling point refrigerant enters condensation
Device 105 enters subcooler 106 after condenser refrigerant becomes the gas-liquid two-phase cold-producing medium rich in low boiling point refrigerant；In mistake
Heat is further discharged in cooler 106, reaches the state of saturated liquid even subcooled liquid, it can after the throttling of throttle valve 107
Greatly improve the refrigerating capacity of evaporator 108.The effect of subcooler 109 is mix refrigerant after the separation of gas-liquid separator 104, is rich in
After the liquid refrigerant of higher boiling refrigerant enters the further cooling of subcooler 110, into subcooler 109；At this time rich in high boiling
The supercooling refrigerant of point refrigerant further exchanges heat with what is come out from evaporator 108 rich in low boiling point two phase refrigerant,
Keep the degree of supercooling rich in higher boiling refrigerant bigger, further increases the refrigerating capacity of subcycle evaporator.Subcooler 110 acts on
High temperature and pressure rich in higher boiling refrigerant is saturated liquid phase refrigerant after 104 separation in gas-liquid separator, into subcooler 10；
Low-temp low-pressure two phase refrigerant rich in higher boiling refrigerant enters subcooler 10 after coming out in subcooler 106, in subcooler
Heat exchange is carried out in 10, and the high pressure liquid phase refrigerant rich in higher boiling refrigerant into subcooler 109 is made to reach supercooled state,
The low pressure gas-phase refrigerant rich in higher boiling refrigerant into compressor 102 reaches superheat state.
By, in the Component Separation Performance of Ternary of evaporation and condensation process, one being completed in condensation process using azeotrope refrigerant
The separation process of secondary component, so that the refrigerant vapour rich in low boiling component gone out from gas-liquid separator separates is by further
Enter evaporator after condenser, to reach lifting system evaporating pressure, and then the purpose of lifting system performance；Simultaneously as
The circuit is by the way of double-compressor parallel operation, it is possible to according to operating condition, adjust separately two-way after component separation
The throttle degree of fluid, the restriction loss of the reduction system of maximum possible, realizing reduces the refrigeration based on non-azeotropic mixed working medium
The energy consumption in circuit simultaneously improves efficiency.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, the spirit for the present invention embodiment technical solution that it does not separate the essence of the corresponding technical solution and
Range.
Claims (6)
1. a kind of refrigerating circuit based on non-azeotropic mixed working medium, which is characterized in that including the first compressor, the second compressor,
First condenser, the second condenser, the first subcooler, evaporator, gas-liquid separator first throttling device and second throttling device；
The outlet of first compressor and second compressor is separately connected the import of first condenser, and the condenser connects
Connecing the import of the gas-liquid separator, the gas outlet of the gas-liquid separator connects the import of second condenser, and described
The outlet of two condensers passes sequentially through first subcooler and connect with the first throttling device, and the first throttling device connects
The evaporator is connect, the evaporator outlet connects first compressor inlet；The liquid outlet of the gas-liquid separator
Second throttling device is connected, the second throttling device is connected by the import of first subcooler and second compressor
It connects.
2. the refrigerating circuit according to claim 1 based on non-azeotropic mixed working medium, which is characterized in that further include the second mistake
The outlet of cooler, the evaporator is connect by second subcooler with the import of first compressor, the gas-liquid point
It is connect by second subcooler with the second throttling device from the liquid outlet of device.
3. the refrigerating circuit according to claim 2 based on non-azeotropic mixed working medium, which is characterized in that further include third mistake
The liquid outlet of cooler, the gas-liquid separator is connect by the third subcooler with second subcooler, first mistake
Cooler is connect by third subcooler with the import of second compressor.
4. the refrigerating circuit according to claim 3 based on non-azeotropic mixed working medium, which is characterized in that the gas-liquid separation
The saturation refrigerant gas of the gas outlet output of device successively passes through the hot fluid of second condenser, first subcooler
Side, the first throttling device, the evaporator, second subcooler cold flow side after enter arrive first compressor
In.
5. the refrigerating circuit according to claim 3 based on non-azeotropic mixed working medium, which is characterized in that the gas-liquid separation
The saturation refrigerant liquid of the liquid outlet output of device is successively by the hot-fluid side of the third subcooler and second supercooling
The hot-fluid side of device, the second throttling device, the cold flow side of first subcooler, the third subcooler cold fluid
Second compressor is entered behind side.
6. a kind of refrigeration equipment, which is characterized in that including the system based on non-azeotropic mixed working medium as described in claim 1-5 is any
Cold loop.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710779117.8A CN109425140B (en) | 2017-09-01 | 2017-09-01 | Refrigeration circuit and refrigeration plant based on non-azeotropic mixed working medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710779117.8A CN109425140B (en) | 2017-09-01 | 2017-09-01 | Refrigeration circuit and refrigeration plant based on non-azeotropic mixed working medium |
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| CN109425140A true CN109425140A (en) | 2019-03-05 |
| CN109425140B CN109425140B (en) | 2020-12-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114111076A (en) * | 2021-11-08 | 2022-03-01 | 清华大学 | Modular non-azeotropic working medium relay evaporation refrigeration system and control method thereof |
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| CN101000192A (en) * | 2006-01-13 | 2007-07-18 | 博西华电器（江苏）有限公司 | Refrigeration system of refrigerator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114111076A (en) * | 2021-11-08 | 2022-03-01 | 清华大学 | Modular non-azeotropic working medium relay evaporation refrigeration system and control method thereof |
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| CN109425140B (en) | 2020-12-18 |
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Effective date of registration: 20201204 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Applicant after: QINGDAO HAIER SPECIAL FREEZER Co.,Ltd. Applicant after: Haier Zhijia Co.,Ltd. Address before: 266100 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER SPECIAL FREEZER Co.,Ltd. |