CN104567142A - Refrigerating system for preventing compressor from running with liquid - Google Patents
Refrigerating system for preventing compressor from running with liquid Download PDFInfo
- Publication number
- CN104567142A CN104567142A CN201310505272.2A CN201310505272A CN104567142A CN 104567142 A CN104567142 A CN 104567142A CN 201310505272 A CN201310505272 A CN 201310505272A CN 104567142 A CN104567142 A CN 104567142A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- liquid separator
- gas
- producing medium
- cold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 78
- 238000005057 refrigeration Methods 0.000 claims abstract description 27
- 239000003507 refrigerant Substances 0.000 claims abstract description 17
- 238000001704 evaporation Methods 0.000 claims abstract description 16
- 230000008020 evaporation Effects 0.000 claims abstract description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000004781 supercooling Methods 0.000 abstract description 6
- 239000002826 coolant Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000019771 cognition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/005—Compression machines, plants or systems with non-reversible cycle of the single unit type
-
- 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
- F25B2400/04—Refrigeration circuit bypassing means
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/28—Means for preventing liquid refrigerant entering into the compressor
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
In order to achieve the above object, the present invention provides a refrigeration system for preventing a compressor from being operated with liquid, comprising: a compressor; the first end of the first heat exchanger is communicated with a first end pipeline of the compressor; the first end of the second heat exchanger is communicated with the second end pipeline of the first heat exchanger; the inlet of the gas-liquid separator is communicated with the second end pipeline of the second heat exchanger, and the outlet of the gas-liquid separator is communicated with the second end of the compressor; further comprising: and a refrigerant conveying bypass pipeline which bypasses and conveys the refrigerant flowing out of the first heat exchanger to the gas-liquid separator and accelerates the evaporation of the refrigerant in the gas-liquid separator. By applying the technical scheme of the invention, the refrigerating system conveys the refrigerant flowing out of the first heat exchanger to the gas-liquid separator, the evaporation of the refrigerant in the gas-liquid separator is accelerated, the risk of damage to the compressor caused by liquid carried by the system can be prevented, the liquid supply temperature can be reduced, the supercooling degree of the system is improved, the energy efficiency ratio and the refrigerating capacity of the unit are improved, and the reliability and the performance of the unit are effectively improved.
Description
Technical field
The present invention relates to field of refrigeration, in particular to a kind of refrigeration system preventing compressor band liquid from running.
Background technology
The system evaporating pressure of current freezing and refrigeration refrigeration system is lower, and refrigeration unit and end evaporimeter are respective independently products, and system is operationally easily with liquid to run.Particularly connect the Parallel sets refrigeration unit of a lot of end, this problem is even more serious.Usual refrigeration unit is all equipped with gas-liquid separator, to guarantee the safety of compressor when system band liquid runs.During system band liquid, the coolant fluid cognition of not evaporating completely is stored in gas-liquid separator.
But, because gas-liquid separator and external heat-exchanging amount few, liquid refrigerant in gas-liquid separator needs evaporation could evaporate completely for a long time, and cold-producing medium that may be liquid can get more and more, and enters vicious circle, is more and more difficult to evaporation.Serious then may cause compressor band hydraulic compression, causes liquid hammer.When there being more liquid refrigerant during vapour divides, cause system coolant quantity to reduce, system evaporating pressure reduces, and lowers system cloud gray model COP(Energy Efficiency Ratio), reduce the heat exchange amount of evaporation side simultaneously, namely reduce cooling system amount.
Summary of the invention
The present invention aims to provide a kind of refrigeration system preventing compressor band liquid from running, with solve refrigeration system of the prior art due to the liquid refrigerant evaporation time in gas-liquid separator long, cause compressor to there is the danger of band hydraulic compression, and reduce the problem of cooling system amount.
To achieve these goals, the invention provides a kind of refrigeration system preventing compressor band liquid from running, comprising: compressor; First Heat Exchanger, the first end pipeline connection of first end and compressor; Second heat exchanger, the second end pipeline connection of first end and First Heat Exchanger; Gas-liquid separator, the second end pipeline connection of entrance and the second heat exchanger, the second end of outlet compressor; Also comprise: cold-producing medium conveying bypass line, is transported to gas-liquid separator, with the evaporation of the cold-producing medium of speed up gas and liquid separator interior by the refrigerant bypass that First Heat Exchanger flows out.
Further, the pipeline between cold-producing medium conveying bypass line and First Heat Exchanger to the second heat exchanger is in parallel.
Further, cold-producing medium conveying bypass line comprises: first end separates from the pipeline between First Heat Exchanger to the second heat exchanger, pipeline between second end and First Heat Exchanger to the second heat exchanger converges, and the middle part of cold-producing medium conveying bypass line is arranged on the inside of gas-liquid separator or is centered around around gas-liquid separator.
Further, also comprise, cold-producing medium conveying bypass line comprises coil pipe, is arranged on gas-liquid separator inside.
Further, also comprise, cold-producing medium conveying bypass line comprises coil pipe, is coiled in gas-liquid separator outside.
Further, also comprise, magnetic valve, be arranged on cold-producing medium conveying bypass line.
Further, magnetic valve connects the mainboard controller of refrigeration system.
Further, the second heat exchanger is air-cooler.
Further, also comprise, reservoir, the second end pipeline connection of first end and First Heat Exchanger; Second end is communicated with the second heat exchanger.
Further, also comprise, filter, be arranged in the pipeline between First Heat Exchanger to the second heat exchanger, be positioned at the upstream of first end along cold-producing medium circulating direction of cold-producing medium conveying bypass line.
Apply technical scheme of the present invention, the cold-producing medium that First Heat Exchanger flows out is transported to gas-liquid separator by refrigeration system, the cold-producing medium evaporation of speed up gas and liquid separator interior, not only can produce the danger damaged to compressor by prevention system band liquid, also can reduce for liquid temp, raising system degree of supercooling, improve unit eer and refrigerating capacity, reliability and the performance of unit are effectively improved.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the syndeton schematic diagram of the refrigeration system preventing compressor band liquid from running of the present invention.
Reference numeral: 10, compressor; 20, condenser; 30, air-cooler; 40, reservoir; 50, gas-liquid separator; 60, cold-producing medium conveying bypass line; 70, magnetic valve.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Shown in Figure 1, the structure of new refrigeration system of the present invention can prevent compressor band liquid from running when system band liquid.The cooling agent circulation that the present invention from compressor 10s, sequentially passes through condenser 20 except existing, compressor got back to by reservoir 40, air-cooler 30, gas-liquid separator 50.Main thought of the present invention is by from reservoir 40, or the high-temperature liquid state cold-producing medium directly exported from condenser enters gas-liquid separator 50 inside by the bypass feed line of the cold-producing medium conveying bypass line 60 with magnetic valve 70, converged by bypass outflow lines and original liquid feeding pipeline again after carrying out heat exchange by the liquid refrigerant in coil pipe and gas-liquid separator wherein, wherein, the pipeline between cold-producing medium conveying bypass line and First Heat Exchanger to the second heat exchanger is in parallel.As the optional scheme of another kind, cold-producing medium conveying bypass line also can gas-liquid separator periphery around, reach the object of exchange heat.Preferably, can also arrange filter in circulation line, the entrance of the bypass feed line of cold-producing medium conveying bypass line is arranged after the filters, avoids foul to block magnetic valve 70, affects its life-span.
Wherein, cold-producing medium conveying bypass line comprises coil pipe, is arranged on gas-liquid separator 50 inner, also can be coiled in gas-liquid separator 50 outside, increases the heat exchange area with gas-liquid separator, strengthens heat transfer effect.
When system band liquid runs, the high-temperature liquid state cold-producing medium flowed through in the cold-producing medium conveying bypass line of gas-liquid separator can absorb the heat of liquid refrigerant in gas-liquid separator 50, accelerate the evaporation of liquid refrigerant, the liquid refrigerant in gas-liquid separator 50 is made to reduce fast and evaporate completely, system can Quick-return to not normally being with in liquid running status, prevent compressor 10 to be with liquid to run, simultaneously, the system of guarantee has enough refrigerants to circulate, the normal evaporating pressure of answering system.And, the liquid cold-producing medium of HTHP temperature after heat exchange reduce, improve feed flow degree of supercooling.Because system evaporating pressure improves and the raising of degree of supercooling, raising system COP(Energy Efficiency Ratio greatly) and refrigerating capacity.
The new refrigerant system configurations comprising bypass line and coil pipe in gas-liquid separator 50 inside of the present invention not only can produce the danger damaged by prevention system band liquid to compressor, also can reduce for liquid temp, raising system degree of supercooling, improve unit COP (Energy Efficiency Ratio) and refrigerating capacity, no matter from the reliability of unit or aspect of performance is obtained for effective improvement.In addition, switch control rule and the magnetic valve 70 of this structure can be connected in mainboard controller, by mainboard controller Controlling solenoid valve 70, realize, according to unit degree of superheat intelligent control switch amount, making systematic function reach optimization.
As can be seen from the above description, present invention achieves following technique effect:
1) make the liquid refrigerant in gas-liquid separator reduce fast and evaporate completely, system can Quick-return to not normally being with in liquid running status, prevent compressor band liquid from running;
2) raising of the raising of system evaporating pressure and degree of supercooling, improves system COP and refrigerating capacity greatly.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the refrigeration system preventing compressor band liquid from running, comprising:
Compressor (10);
First Heat Exchanger, the first end pipeline connection of first end and described compressor (10);
Second heat exchanger, the second end pipeline connection of first end and described First Heat Exchanger;
Gas-liquid separator (50), the second end pipeline connection of entrance and described second heat exchanger, the second end of compressor described in outlet;
It is characterized in that, also comprise:
Cold-producing medium conveying bypass line, is transported to described gas-liquid separator (50), to accelerate the evaporation of the cold-producing medium of described gas-liquid separator inside by the refrigerant bypass that First Heat Exchanger flows out.
2. refrigeration system according to claim 1, is characterized in that, the pipeline between described cold-producing medium conveying bypass line and described First Heat Exchanger to described second heat exchanger is in parallel.
3. refrigeration system according to claim 1, it is characterized in that, described cold-producing medium conveying bypass line comprises: first end from described First Heat Exchanger to described second heat exchanger between pipeline separate, the pipeline between the second end and described First Heat Exchanger to described second heat exchanger converges; The middle part of described cold-producing medium conveying bypass line is arranged on the inside of described gas-liquid separator (50) or is centered around described gas-liquid separator (50) around.
4. refrigeration system according to claim 3, is characterized in that, also comprises, and described cold-producing medium conveying bypass line comprises coil pipe, is arranged on described gas-liquid separator (50) inner.
5. refrigeration system according to claim 3, is characterized in that, also comprises, and described cold-producing medium conveying bypass line comprises coil pipe, is coiled in described gas-liquid separator (50) outside.
6. the refrigeration system according to claim 1 to 5 any one, is characterized in that, also comprises, magnetic valve (70), is arranged on described cold-producing medium conveying bypass line.
7. refrigeration system according to claim 6, is characterized in that, described magnetic valve (70) connects the mainboard controller of described refrigeration system.
8. refrigeration system as claimed in any of claims 1 to 5, is characterized in that, described second heat exchanger is air-cooler.
9. refrigeration system as claimed in any of claims 1 to 5, is characterized in that, also comprises, reservoir (40), the second end pipeline connection of first end and described First Heat Exchanger; Second end is communicated with described second heat exchanger.
10. refrigeration system according to claim 3, it is characterized in that, also comprise, filter, be arranged in the pipeline between described First Heat Exchanger to described second heat exchanger, be positioned at the upstream of first end along cold-producing medium circulating direction of described cold-producing medium conveying bypass line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310505272.2A CN104567142A (en) | 2013-10-23 | 2013-10-23 | Refrigerating system for preventing compressor from running with liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310505272.2A CN104567142A (en) | 2013-10-23 | 2013-10-23 | Refrigerating system for preventing compressor from running with liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104567142A true CN104567142A (en) | 2015-04-29 |
Family
ID=53083789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310505272.2A Pending CN104567142A (en) | 2013-10-23 | 2013-10-23 | Refrigerating system for preventing compressor from running with liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104567142A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241134A (en) * | 2015-10-16 | 2016-01-13 | 珠海格力电器股份有限公司 | Gas-liquid separator, air conditioning system and operation method of air conditioning system |
| CN105352232A (en) * | 2015-11-30 | 2016-02-24 | 珠海格力电器股份有限公司 | Subcooler and have its air conditioner |
| CN109373622A (en) * | 2018-10-12 | 2019-02-22 | 广州市华德工业有限公司 | A kind of air-conditioning system and data center computer room air-conditioning |
| CN113237247A (en) * | 2021-05-17 | 2021-08-10 | 青岛海尔空调电子有限公司 | Heat pump air conditioning system and air conditioning unit |
-
2013
- 2013-10-23 CN CN201310505272.2A patent/CN104567142A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241134A (en) * | 2015-10-16 | 2016-01-13 | 珠海格力电器股份有限公司 | Gas-liquid separator, air conditioning system and operation method of air conditioning system |
| WO2017063613A1 (en) * | 2015-10-16 | 2017-04-20 | 珠海格力电器股份有限公司 | Gas liquid separator, air conditioning system, and air conditioning system operation method |
| CN105352232A (en) * | 2015-11-30 | 2016-02-24 | 珠海格力电器股份有限公司 | Subcooler and have its air conditioner |
| WO2017092652A1 (en) * | 2015-11-30 | 2017-06-08 | 珠海格力电器股份有限公司 | Subcooler and air-conditioner having same |
| CN109373622A (en) * | 2018-10-12 | 2019-02-22 | 广州市华德工业有限公司 | A kind of air-conditioning system and data center computer room air-conditioning |
| CN113237247A (en) * | 2021-05-17 | 2021-08-10 | 青岛海尔空调电子有限公司 | Heat pump air conditioning system and air conditioning unit |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150429 |