CN110617645A - Carbon dioxide compressor and refrigerating system thereof - Google Patents
Carbon dioxide compressor and refrigerating system thereof Download PDFInfo
- Publication number
- CN110617645A CN110617645A CN201911014121.0A CN201911014121A CN110617645A CN 110617645 A CN110617645 A CN 110617645A CN 201911014121 A CN201911014121 A CN 201911014121A CN 110617645 A CN110617645 A CN 110617645A
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- Prior art keywords
- cylinder
- compressor
- exhaust port
- exhaust
- carbon dioxide
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 36
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 36
- 230000006835 compression Effects 0.000 claims abstract description 28
- 238000007906 compression Methods 0.000 claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 238000005057 refrigeration Methods 0.000 claims description 30
- 230000014509 gene expression Effects 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 abstract 2
- 239000003921 oil Substances 0.000 description 29
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 239000010726 refrigerant oil Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 125000001246 bromo group Chemical group Br* 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 230000003434 inspiratory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- 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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
Abstract
The invention provides a carbon dioxide compressor and a refrigerating system thereof, wherein the carbon dioxide compressor comprises a shell, a motor, a cylinder assembly and an exhaust liquid distributor, wherein the cylinder assembly comprises a first cylinder for performing secondary compression and a second cylinder for performing primary compression; an upper cover exhaust port is arranged on the shell, a first exhaust port of the first cylinder is communicated with the cavity of the shell, and gas is exhausted from the first exhaust port, enters the cavity and is exhausted out of the compressor through the upper cover exhaust port; and the second exhaust port of the second cylinder is connected with the inlet of the exhaust gas separator. The invention effectively reduces the pressure of the compressor and the refrigerating system, reduces the exhaust temperature of the compressor and improves the working efficiency of the compressor; the volume ratio of the first cylinder to the second cylinder and the ratio relation between the volume of the double cylinders and the exhaust area of the double cylinders are limited, so that an air supplementing structure required by the conventional secondary compressor is removed, airflow disorder caused by the air supplementing structure is avoided, and the running stability of the compressor is improved.
Description
Technical Field
The invention relates to refrigeration equipment, in particular to a carbon dioxide compressor and a refrigeration system thereof.
Background
Chlorine atoms and bromine atoms in the halogenated hydrocarbons can have violent chemical reactions with ozone, destroy the ozone layer in the atmosphere and even form ozone holes. Most of chlorine and bromine in the atmosphere come from freon discharged by the refrigeration industry, so that the adoption of other environment-friendly working media to replace freon in the refrigeration industry is an urgent task of the refrigeration industry. Carbon dioxide has received much attention in the refrigeration industry due to its excellent environmental and thermophysical properties.
The existing carbon dioxide compressor is of a high-pressure ratio structure, a single-stage refrigeration cycle is used for preparing lower evaporation temperature under the condition of large compression ratio, a plurality of harmful factors can be generated, if the exhaust temperature of the compressor is very high, the refrigeration coefficient can be reduced, the lubrication effect can be deteriorated, and the service life and the normal operation of the compressor are influenced. Under normal ambient temperature, when the evaporation temperature is reduced, the compression ratio is increased, the volumetric efficiency of the compressor is reduced, the actual air suction amount is reduced, the refrigerating capacity is reduced, and when the compression ratio reaches a certain value, the compressor cannot refrigerate. The throttling loss is increased, the refrigerating capacity of the refrigerant per unit mass is reduced, the power consumption is increased, and the refrigerating coefficient is reduced. In a primary refrigeration cycle system adopting air cooling and evaporative cooling as condensers, condensate is generally adopted to directly supply liquid to an evaporator at high pressure, and the condensing pressure of the condensate is greatly influenced by the ambient temperature, so that the liquid supply pressure of the evaporator and the circulation amount of a refrigerant are continuously changed all the year round, the refrigeration efficiency is influenced, and the installation and maintenance cost of a refrigeration liquid supply pipeline is improved.
Disclosure of Invention
In view of the above disadvantages in the prior art, an object of the present invention is to provide a carbon dioxide compressor, which effectively solves the problem of performance degradation of a refrigeration system of the existing carbon dioxide compressor under a large compression ratio.
The invention provides a carbon dioxide compressor, which comprises a shell and a motor arranged in a cavity of the shell, and further comprises an air cylinder assembly and an exhaust liquid distributor, wherein the air cylinder assembly comprises a first air cylinder for performing two-stage compression and a second air cylinder for performing one-stage compression; the first cylinder is provided with a first exhaust port, an upper cover exhaust port is arranged on the shell, the first exhaust port is communicated with the cavity, and gas is exhausted from the first exhaust port, enters the cavity and is exhausted out of the compressor through the upper cover exhaust port; the second cylinder is provided with a second exhaust port, and the inlet of the exhaust gas separator is connected with the second exhaust port.
Preferably, the exhaust volume of the first cylinder is V1, the exhaust volume of the second cylinder is V2, and the ratio of V1 to V2 is 0.1-0.9.
Preferably, the ratio of V1 to V2 is 0.4.
Preferably, the first cylinder exhaust area is s 1; the second cylinder exhaust area is s2, and V1, V2, s1 and s2 satisfy the following expression:
preferably, V1, V2, s1 and s2 satisfy the following expressions:
the invention also provides a refrigeration system comprising a carbon dioxide compressor as described above.
Preferably, the refrigeration system further comprises:
the system comprises a first condenser heat exchanger, a flash evaporator, a first evaporator heat exchanger and a first air suction liquid separator which are sequentially connected through pipelines, and a second condenser heat exchanger, a flash evaporator, a second evaporator heat exchanger and a second air suction liquid separator which are sequentially connected through pipelines;
an inlet of the first condenser heat exchanger is connected with an outlet of the exhaust gas separator, a first throttle valve is arranged on a pipeline between the flash evaporator and the first evaporator heat exchanger, and an outlet of the first suction gas separator is connected with a first air inlet of the first air cylinder;
and the inlet of the second condenser heat exchanger is connected with the exhaust port of the upper cover, a second throttle valve is arranged on a pipeline between the flash evaporator and the second evaporator heat exchanger, and the outlet of the second air suction liquid separator is connected with a second air inlet of the second air cylinder.
Preferably, the air conditioner further comprises an oil separator and an oil cooler, wherein an inlet of the oil separator is connected with the exhaust port of the upper cover, a gas outlet of the oil separator is connected with an inlet of the second condenser heat exchanger, an oil outlet of the oil separator is connected with an inlet of the oil cooler, and an outlet of the oil cooler is connected with an inlet of the second air suction liquid separator.
Compared with the prior art, the carbon dioxide compressor provided by the invention effectively reduces the pressure of the compressor and a refrigeration system in a double-suction and double-discharge mode, so that the exhaust temperature of the compressor can be effectively reduced, the working efficiency of the compressor is improved, and the running stability of the compressor is ensured; through discovering the volume ratio of first cylinder and second cylinder and the ratio relation of its two jar volumes and exhaust area to carry out special restriction, thereby got rid of the tonifying qi structure that current secondary compressor needs, thereby avoided the air current disorder that the tonifying qi structure caused, improved the stability of compressor operation. The refrigeration system using the carbon dioxide compressor provided by the invention can effectively reduce the compression ratio of the compressor, improves the performance of the refrigeration system and has high operation stability. And an oil return mechanism consisting of an oil separator and an oil cooler is additionally arranged on the high-pressure side of the carbon dioxide compressor, so that the reliability of the air-conditioning system is further ensured.
The features mentioned above can be combined in various suitable ways or replaced by equivalent features as long as the object of the invention is achieved.
Drawings
The invention will be described in more detail hereinafter on the basis of non-limiting examples only and with reference to the accompanying drawings. Wherein:
fig. 1 is a schematic structural diagram of a carbon dioxide compressor provided in an embodiment of the present invention;
FIG. 2 is a schematic diagram of a refrigeration system provided in an embodiment of the present invention;
description of reference numerals:
1. a first cylinder; 2. a second cylinder; 3. a motor; 4. a housing; 5. an exhaust knockout; 6. a first condenser heat exchanger; 7. a flash evaporator; 8. a first throttle valve; 9. a first evaporator heat exchanger; 10. a second condenser heat exchanger; 11. a second throttle valve; 12. a second evaporator heat exchanger; 13. a first inspiratory dispenser; 14. a second aspirating liquid dispenser; 15. an oil separator; 16. an oil cooler; 17. a four-way valve; 100. a carbon dioxide compressor; 101. a first air inlet; 103. a second air inlet; 104. a second exhaust port; 105. a cavity; 106. and an exhaust port of the upper cover.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and more complete, the following technical solutions of the present invention will be described in detail, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the specific embodiments of the present invention belong to the protection scope of the present invention.
As shown in fig. 1, the carbon dioxide compressor 100 is a two-stage compressor structure, and includes a housing 4, a motor 3, an exhaust gas separator 5, and a cylinder assembly. The housing 4 is composed of a middle housing and upper and lower covers (the middle housing and the upper and lower covers are not shown in the figure), wherein the motor 3 is used for providing power for the cylinder assembly, the upper and lower covers are welded with the middle housing after the motor 3 and the cylinder assembly are assembled with the housing 4 assembly to form a sealing structure with a cavity 105, and the upper cover is provided with an upper cover exhaust port 106.
The cylinder assembly includes a first cylinder 1 for performing two-stage compression and a second cylinder 2 for performing one-stage compression. A first cylinder 1 having a first intake port 101 and a first exhaust port (not shown), a second cylinder 2 having a second intake port 103 and a second exhaust port 104; the second exhaust port 104 is connected with the exhaust gas separator 5, and the exhaust gas is exhausted through the exhaust gas separator 5; first exhaust port intercommunication casing 4 in cavity 105, first cylinder 1 accomplish the compression back, can directly discharge the high-pressure gas after the compression to casing 4 in, discharge carbon dioxide compressor 100 through upper cover gas vent 106 again (be a sealed appearance chamber, after forming atmospheric pressure, can follow an unsealed breach and exhaust). Set up exhaust knockout 5 and be in order to carry out oil-gas separation, reduce the oiliness, start when exhausting, the refrigerant oil of compressor inner chamber can be taken away from the compressor along with gaseous refrigerant together, the oiliness of air conditioning system has been improved, also make the refrigerant oil of compressor inner chamber reduce, the wearing and tearing of compressor have been increased, the reliability of compressor has been reduced, increase exhaust knockout 5 and can make the compressor carry out the oil-gas separation of certain degree when exhausting, avoid the refrigerant oil to be taken away from the compressor, the reliability of compressor is improved. The carbon dioxide compressor 100 uses two-stage compression to effectively reduce the compression ratio of the compressor and improve the performance of the refrigeration system.
The principle of the two-stage compression is that after being compressed, an accommodating cavity with large air displacement enters an accommodating cavity with small air displacement for recompression, and meanwhile, an intermediate cavity is used for air supplement and enthalpy increase, so that the energy efficiency of the compressor can be improved after the two-stage compression. Because the carbon dioxide compressor 100 is of a high-pressure ratio structure (the ratio of the suction pressure to the exhaust pressure is high), the air supply structure is prone to cause backflow leakage, so that airflow turbulence is caused, and the compressor is unstable in operation. To above-mentioned problem, in this application, the exhaust volume of first cylinder 1 is V1, the exhaust volume of second cylinder 2 is V2, then the ratio of V1 and V2 is 0.1 ~ 0.9, set up the volume ratio in this scope, can effectively guarantee the gas compression volume of first cylinder 1 when making the one-level compression of second cylinder 2 accomplish the back and get into the second grade compression of first cylinder 1, thereby need not redesign tonifying qi structure (carbon dioxide compressor 100 can understand as low pressure vessel, its leakproofness is better safer, tonifying qi structure easily causes the backward flow to reveal), avoid the air current disorder that the tonifying qi structure caused, improve the stability of compressor operation. In another embodiment, the ratio of V1 to V2 is 0.2-0.8, preferably the ratio of V1 to V2 is 0.4.
The exhaust of the carbon dioxide compressor 100 is completed through the exhaust liquid separator 5 and the upper cover exhaust port 106 respectively, when a double-exhaust structure is designed by a double-stage compression air supply canceling structure, the ratio of V1 to V2 is 0.1-0.9, the compression amount and pressure of gas are different naturally due to different compression volumes of the first cylinder 1 and the second cylinder 2, and if the exhaust areas of the exhaust ports are consistent, the relative influence of the exhaust of the upper cover exhaust port 106 on the high-pressure side is small; when the exhaust gas separator 5 exhausts gas after low-pressure gas compression is completed, gas resistance is increased when the exhaust area is too small, useless work is improved, and the gas quantity of pipeline circulation of an air conditioning system is reduced; the exhaust area of the second cylinder 2 is s2, and V1, V2, s1, and s2 satisfy the following formula:
thereby further ensuring energy efficiency and reliability of the compressor. In another aspect, V1, V2, s1, and s2 satisfy the following formula:
preference is given to
The present invention also provides a refrigeration system comprising the carbon dioxide compressor 100 described above. As shown in fig. 2 (the direction of arrows in the figure indicates the direction of gas flow), the refrigeration system includes a carbon dioxide compressor 100, a first condenser heat exchanger 6, a flash evaporator 7, a first evaporator heat exchanger 9, and a first suction gas separator 13, which are connected in series by pipes, and a second condenser heat exchanger 10, a flash evaporator 7, a second evaporator heat exchanger 12, and a second suction gas separator 14, which are connected in series by pipes. An inlet of the first condenser heat exchanger 6 is connected with an outlet of the exhaust gas separator 5, a first throttle valve 8 is arranged on a pipeline between the flash evaporator 7 and the first evaporator heat exchanger 9, and an air outlet of the first air suction separator 13 is connected with a first air inlet 101 on the carbon dioxide compressor 100; the inlet of the second condenser heat exchanger 10 is connected with the upper cover exhaust port 106, the pipeline between the flash evaporator 7 and the second evaporator heat exchanger 12 is provided with a second throttle valve 11, and the outlet of the second suction gas knockout vessel 14 is connected with the second air inlet 103 on the carbon dioxide compressor 100.
In order to separate oil from gas discharged from the upper cover exhaust port 106 and reduce the oil content of the gas, an oil separator 15 is arranged between the upper cover exhaust port 106 and the second condenser heat exchanger 10; the inlet of the oil separator 15 is connected with the upper cover exhaust port 106, and the gas outlet of the oil separator 15 is connected with the inlet of the second condenser heat exchanger 10; the oil separator 15 also has an oil outlet which is connected to an inlet of an oil cooler 16, the outlet of the oil cooler 16 being connected to an inlet of the second suction liquid separator 14. The refrigeration oil separated by the oil separator 15 is cooled by an oil cooler 16, and the cooled refrigeration oil enters the second air suction liquid separator 14 through a pipeline and then returns to the low-pressure side of the carbon dioxide compressor 100 for oil return; the gas separated by the oil separator 15 enters the second condenser heat exchanger 10 and then enters the refrigeration system for circulation, so that the reliability of the two-stage carbon dioxide compressor 100 is ensured, and the stable operation of the refrigeration system is ensured.
The operation principle of the refrigeration system is as follows:
the second cylinder 2 is used as a first-stage low-pressure cylinder for air suction, compression and air exhaust, the gas exhausted from the second cylinder 2 is exhausted from the carbon dioxide compressor 100 through the exhaust gas separator 5, then enters the first air suction separator 13 through the first condenser heat exchanger 6, the flash evaporator 7, the first throttle valve 8 and the first evaporator heat exchanger 9, then is sucked into the first cylinder 1 (high-pressure cylinder) through the first air suction separator 13 for secondary compression, the compressed gas enters the inner cavity of the shell 4 from the first exhaust port, then is exhausted from the carbon dioxide compressor 100 through the upper cover exhaust port 106, then enters the second air suction separator 14 through the oil separator 15, the second condenser heat exchanger 10, the flash evaporator 7, the second throttle valve 11 and the second evaporator heat exchanger 12, and then enters the second cylinder 2 to form a complete circulation flow path.
The four-way valve 17 can be used for switching over the entire circulation flow path.
As shown in fig. 2, in the present application, the second cylinder 2 is a low pressure cylinder, and the first cylinder 1 is a high pressure cylinder, and the high and low pressure sides of the refrigeration system can be determined according to the high and low pressures of the cylinders.
Finally, it should be noted that: the above embodiments and examples are only used to illustrate the technical solution of the present invention, but not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments and examples, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments or examples may still be modified, or some of the technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments or examples of the present invention.
Claims (8)
1. A carbon dioxide compressor comprises a shell and a motor arranged in a cavity of the shell, and is characterized by further comprising a cylinder assembly and an exhaust gas liquid separator, wherein the cylinder assembly comprises a first cylinder for performing two-stage compression and a second cylinder for performing one-stage compression; the first cylinder is provided with a first exhaust port, an upper cover exhaust port is arranged on the shell, the first exhaust port is communicated with the cavity, and gas is exhausted from the first exhaust port, enters the cavity and is exhausted out of the compressor through the upper cover exhaust port; the second cylinder is provided with a second exhaust port, and the inlet of the exhaust gas separator is connected with the second exhaust port.
2. The carbon dioxide compressor as claimed in claim 1, wherein the first cylinder has a discharge volume of V1, the second cylinder has a discharge volume of V2, and a ratio of V1 to V2 is 0.1 to 0.9.
3. The carbon dioxide compressor of claim 2, wherein the ratio of V1 to V2 is 0.4.
4. The carbon dioxide compressor of claim 2 or 3, wherein the first cylinder discharge area is s 1; the second cylinder exhaust area is s2, and V1, V2, s1 and s2 satisfy the following expression:
5. the carbon dioxide compressor of claim 4, wherein V1, V2, s1, and s2 satisfy the following expression:
6. a refrigeration system comprising the carbon dioxide compressor of any one of claims 1-5.
7. The refrigeration system of claim 6, further comprising:
the system comprises a first condenser heat exchanger, a flash evaporator, a first evaporator heat exchanger and a first air suction liquid separator which are sequentially connected through pipelines, and a second condenser heat exchanger, a flash evaporator, a second evaporator heat exchanger and a second air suction liquid separator which are sequentially connected through pipelines;
an inlet of the first condenser heat exchanger is connected with an outlet of the exhaust gas separator, a first throttle valve is arranged on a pipeline between the flash evaporator and the first evaporator heat exchanger, and an outlet of the first suction gas separator is connected with a first air inlet of the first air cylinder;
and the inlet of the second condenser heat exchanger is connected with the exhaust port of the upper cover, a second throttle valve is arranged on a pipeline between the flash evaporator and the second evaporator heat exchanger, and the outlet of the second air suction liquid separator is connected with a second air inlet of the second air cylinder.
8. The refrigeration system according to claim 7, further comprising an oil separator and an oil cooler, an inlet of the oil separator being connected to the upper cover vent, a gas outlet of the oil separator being connected to an inlet of the second condenser heat exchanger, an oil outlet of the oil separator being connected to an inlet of the oil cooler, an outlet of the oil cooler being connected to an inlet of the second suction liquid separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911014121.0A CN110617645A (en) | 2019-10-23 | 2019-10-23 | Carbon dioxide compressor and refrigerating system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911014121.0A CN110617645A (en) | 2019-10-23 | 2019-10-23 | Carbon dioxide compressor and refrigerating system thereof |
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| Publication Number | Publication Date |
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| CN110617645A true CN110617645A (en) | 2019-12-27 |
Family
ID=68926498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911014121.0A Pending CN110617645A (en) | 2019-10-23 | 2019-10-23 | Carbon dioxide compressor and refrigerating system thereof |
Country Status (1)
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| CN (1) | CN110617645A (en) |
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|---|---|---|---|---|
| JPH05149634A (en) * | 1991-06-20 | 1993-06-15 | Mitsubishi Electric Corp | Air-conditioning device |
| CN102644592A (en) * | 2011-02-22 | 2012-08-22 | 珠海格力电器股份有限公司 | Compressor and air-conditioning system with same |
| KR20130036463A (en) * | 2011-10-04 | 2013-04-12 | 엘지전자 주식회사 | An air conditioner |
| CN105605817A (en) * | 2016-03-14 | 2016-05-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Refrigerating system |
| CN106089712A (en) * | 2016-07-28 | 2016-11-09 | 广东美芝制冷设备有限公司 | Compressor and there is its cold-warm type refrigerating plant, single cold type refrigerating plant |
| CN205860542U (en) * | 2016-07-28 | 2017-01-04 | 广东美芝制冷设备有限公司 | Carbon dioxide refrigerating system |
| CN108180680A (en) * | 2018-01-22 | 2018-06-19 | 珠海格力电器股份有限公司 | A kind of oil return control device, air-conditioning system and its method for controlling oil return |
| CN108692478A (en) * | 2018-05-04 | 2018-10-23 | 珠海格力电器股份有限公司 | The control method of air-conditioning system and air-conditioning system |
| CN109113996A (en) * | 2018-10-12 | 2019-01-01 | 珠海凌达压缩机有限公司 | A kind of rotary compressor, refrigeration system and the air conditioner with it |
| CN210921856U (en) * | 2019-10-23 | 2020-07-03 | 珠海凌达压缩机有限公司 | Carbon dioxide compressor and refrigerating system thereof |
-
2019
- 2019-10-23 CN CN201911014121.0A patent/CN110617645A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05149634A (en) * | 1991-06-20 | 1993-06-15 | Mitsubishi Electric Corp | Air-conditioning device |
| CN102644592A (en) * | 2011-02-22 | 2012-08-22 | 珠海格力电器股份有限公司 | Compressor and air-conditioning system with same |
| KR20130036463A (en) * | 2011-10-04 | 2013-04-12 | 엘지전자 주식회사 | An air conditioner |
| CN105605817A (en) * | 2016-03-14 | 2016-05-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Refrigerating system |
| CN106089712A (en) * | 2016-07-28 | 2016-11-09 | 广东美芝制冷设备有限公司 | Compressor and there is its cold-warm type refrigerating plant, single cold type refrigerating plant |
| CN205860542U (en) * | 2016-07-28 | 2017-01-04 | 广东美芝制冷设备有限公司 | Carbon dioxide refrigerating system |
| CN108180680A (en) * | 2018-01-22 | 2018-06-19 | 珠海格力电器股份有限公司 | A kind of oil return control device, air-conditioning system and its method for controlling oil return |
| CN108692478A (en) * | 2018-05-04 | 2018-10-23 | 珠海格力电器股份有限公司 | The control method of air-conditioning system and air-conditioning system |
| CN109113996A (en) * | 2018-10-12 | 2019-01-01 | 珠海凌达压缩机有限公司 | A kind of rotary compressor, refrigeration system and the air conditioner with it |
| CN210921856U (en) * | 2019-10-23 | 2020-07-03 | 珠海凌达压缩机有限公司 | Carbon dioxide compressor and refrigerating system thereof |
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