CN101464081A - Siphon type gas-liquid separation and oil return apparatus in parallel compression refrigeration units - Google Patents
Siphon type gas-liquid separation and oil return apparatus in parallel compression refrigeration units Download PDFInfo
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- CN101464081A CN101464081A CNA2008102426662A CN200810242666A CN101464081A CN 101464081 A CN101464081 A CN 101464081A CN A2008102426662 A CNA2008102426662 A CN A2008102426662A CN 200810242666 A CN200810242666 A CN 200810242666A CN 101464081 A CN101464081 A CN 101464081A
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- air suction
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- oil return
- suction manifold
- siphon
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Abstract
The invention relates to a siphon gas-liquid separation and oil return device in a parallel compression refrigeration unit. The siphon gas-liquid separation and oil return device comprises an air suction header, an air return pipe of an evaporator and an air suction branch pipe of a compressor, the air return pipe of the evaporator is arranged at the top part of the air suction header, the air suction header is connected with an air suction port of the compressor by the air suction branch pipe of the compressor, the air suction branch pipe of the compressor is extended into the middle part or the position above the middle part of an inner cavity of the air suction header from the bottom part of the air suction header, one end of a siphon oil return pipe is connected with the air suction branch pipe of the compressor, and the other end is extended into the middle part of the position below the middle part of the inner cavity of the air suction header from the top part of the air suction header. The device has simple structure and convenient processing, and the pressure of an airflow pipeline is reduced by improving the height of the air suction branch pipe of the compressor inserted in the air suction header; the device adopts the thinner siphon oil return pipe for absorbing oil liquid, thereby effectively controlling the liquid absorption of the compressor, further improving the operation efficiency of a system and the reliability of the compressor and enhancing the product performance.
Description
Technical field
The present invention relates to a kind of parallel compression refrigeration unit, specifically a kind of siphon type gas-liquid in the multimachine head parallel compression refrigeration unit separates and oil return apparatus.
Background technology
The air-breathing arm of multiple compressors is connected on the suction manifold in the multimachine head parallel compression refrigeration unit; gas in from the evaporimeter to the suction manifold is taken some liquid out of through regular meeting; if gas is not separated with liquid and is controlled the liquid soakage; the suction meeting of big quantity of fluid produces powerful hydraulic shock to the compression member of compressor; and make that lubricating oil is thinning to be released, thereby cause compressor damage.In gas-liquid separation, also will guarantee continuously to take back compressor, otherwise compressor is understood final oil starvation and is damaged with gas along the lubricating oil that aspirating air pipe is returned.
Existing gas-liquid separation technology is divided into and has independent gas-liquid separator and two kinds of no independent gas-liquid separators.With independent gas-liquid separator is gas that evaporimeter the is returned independent standard gas-liquid separator of all flowing through earlier, after separating, enter suction manifold, the compressor air suction arm of each compressor is drawn from suction manifold, this apparatus system is many parts, air-flow pressure is big, influence whole set structure design, and cost increases; Not having independent gas-liquid separator is that the gas that refluxes directly flows to suction manifold, and the compressor air suction arm is inserted into the bottom of suction manifold, and the liquid absorption of this compressor is bigger, compressor must be raised, be higher than the suction manifold position, could realize reducing liquid absorption, make whole set structure design complicated.
Summary of the invention
The present invention overcomes the shortcoming that exists in the prior art, provides the siphon type gas-liquid in a kind of simple in structure, the parallel compression refrigeration unit that can control the liquid soakage to separate and oil return apparatus.
The technical solution used in the present invention is: the siphon type gas-liquid in a kind of parallel compression refrigeration unit separates and oil return apparatus, comprise suction manifold, evaporimeter muffler, compressor air suction arm, the evaporimeter muffler is installed in the suction manifold top, the air-breathing arm of the compressed machine of suction manifold is connected with the compressor air suction mouth, and technical characterictic is compressor air suction arm top air entry section is stretched into the suction manifold inner chamber by the suction manifold bottom the above position in middle part or middle part; One siphon oil return pipe, one end connects gas outlet, compressor air suction arm bottom section, and the other end stretches into the middle part of suction manifold inner chamber or middle part with upper/lower positions by the suction manifold top.
The present invention need not independently to be provided with special-purpose gas-liquid separator, insert suction manifold pipe inner height by improving the compressor air suction arm, reduced airflow line pressure, and adopt thin siphon oil return pipe for absorbing oil, avoid big quantity of fluid to suck compressor, effectively controlled the liquid absorption of compressor, thereby improved running efficiency of system and compressor reliability, enhanced product performance, and it is simple and reasonable, the siphon oil return pipe is made and be need not complicated technology, and easy to process, cost is low.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Among the figure: suction manifold 1, evaporimeter muffler 2, compressor air suction arm 3, siphon oil return pipe 4.
The specific embodiment
The invention will be further described below in conjunction with embodiment.
Siphon type gas-liquid in a kind of parallel compression refrigeration unit among Fig. 1 separates and oil return apparatus, evaporimeter muffler 2 is installed in suction manifold 1 top, middle part or the middle part above position of the air entry section of compressor air suction arm 3 in suction manifold 1 pipe is inserted in suction manifold 1 bottom, siphon oil return pipe 4 one ends are connected in the gas outlet section of compressor air suction arm 3, and the other end is inserted into middle part in suction manifold 1 pipe or middle part with upper/lower positions from suction manifold 1 top.
Whole parallel compression refrigeration unit mainly comprises compressor, condenser, evaporimeter and expansion valve four big parts, and wherein suction manifold has special structure.Enter condenser after the compressed machine compression of refrigerant gas and condense into liquid, liquid absorbs external heat (promptly to extraneous released cold quantity) in evaporimeter after the expansion valve throttling, become gas-liquid mixture and carrying lubricating oil secretly and flow to suction manifold 1 through evaporimeter muffler 2.Owing to compare with the evaporimeter muffler, the suction manifold space is bigger, and the gas-liquid mixture flow velocity reduces suddenly, and liquid and oil droplet drop into the suction manifold bottom, gas then accumulates in the first half of suction manifold, and the compressor air suction arm 3 of middle and upper part sucks compressor in inserting suction manifold.The inducer of siphon oil return pipe 4 is immersed in the liquid and oil mixture of suction manifold inner bottom part, and outlet section is connected in the compressor suction duct 3, these liquid oil mixtures have formed fluid-tight, thereby the pressure that makes siphon oil return pipe inner chamber is much smaller than the suction manifold internal pressure, this pressure differential driving liquid oil mixture overcomes the self gravitation difference and flow into rapidly along the siphon oil return pipe in the compressor air suction arm of bottom, forms siphon.Because siphon oil return pipe bore is thinner, therefore returns liquid measure and be effectively controlled.And after compressor shutdown, because siphon oil return pipe inlet and outlet pressure balance can't form siphonage, the liquid oil mixture just can not flow into compressor voluntarily.
Claims (3)
1, siphon type gas-liquid in a kind of parallel compression refrigeration unit separates and oil return apparatus, it comprises suction manifold (1), evaporimeter muffler (2), compressor air suction arm (3), the evaporimeter muffler is installed in the suction manifold top, the air-breathing arm of the compressed machine of suction manifold is connected with the compressor air suction mouth, it is characterized in that: compressor air suction arm (3) top air entry section is stretched in the suction manifold inner chamber by suction manifold (1) bottom, one siphon oil return pipe (4) one ends connect gas outlet, compressor air suction arm (3) bottom section, and the other end is stretched in the suction manifold inner chamber by suction manifold (1) top.
2, the siphon type gas-liquid in the parallel compression refrigeration unit according to claim 1 separates and oil return apparatus, it is characterized in that: described compressor air suction arm (3) is stretched into the above position in middle part or middle part of suction manifold inner chamber by suction manifold (1) bottom.
3, the siphon type gas-liquid in the parallel compression refrigeration unit according to claim 1 separates and oil return apparatus, it is characterized in that: the other end of described siphon oil return pipe (4) stretches into the middle part of suction manifold inner chamber or middle part with upper/lower positions by suction manifold (1) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102426662A CN101464081A (en) | 2008-12-31 | 2008-12-31 | Siphon type gas-liquid separation and oil return apparatus in parallel compression refrigeration units |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102426662A CN101464081A (en) | 2008-12-31 | 2008-12-31 | Siphon type gas-liquid separation and oil return apparatus in parallel compression refrigeration units |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101464081A true CN101464081A (en) | 2009-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102426662A Pending CN101464081A (en) | 2008-12-31 | 2008-12-31 | Siphon type gas-liquid separation and oil return apparatus in parallel compression refrigeration units |
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| CN (1) | CN101464081A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322717A (en) * | 2013-06-17 | 2013-09-25 | 江苏科立德制冷设备有限公司 | Low-temperature vortex parallel compression condensing unit with enhanced vapor injection |
| CN104457059A (en) * | 2013-09-12 | 2015-03-25 | 珠海格力电器股份有限公司 | Gas-liquid separator and air conditioner comprising same |
| CN104457029A (en) * | 2013-09-12 | 2015-03-25 | 珠海格力电器股份有限公司 | Compressor unit and air conditioner comprising same |
| CN105890233A (en) * | 2011-11-18 | 2016-08-24 | 美的集团股份有限公司 | Parallel flow heat exchanger |
| CN107631526A (en) * | 2017-10-25 | 2018-01-26 | 江苏科立德制冷设备有限公司 | A kind of Large Copacity gas-liquid separation suction manifold applied to refrigeration unit |
| CN109990515A (en) * | 2019-04-30 | 2019-07-09 | 安徽美乐柯制冷空调设备有限公司 | A kind of heat exchange gas-liquid separator with economizer function |
| CN115265004A (en) * | 2022-07-22 | 2022-11-01 | 安徽众汇制冷有限公司 | Gas-liquid separator with oil return and liquid discharge functions |
-
2008
- 2008-12-31 CN CNA2008102426662A patent/CN101464081A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105890233A (en) * | 2011-11-18 | 2016-08-24 | 美的集团股份有限公司 | Parallel flow heat exchanger |
| CN105890233B (en) * | 2011-11-18 | 2018-06-29 | 美的集团股份有限公司 | Parallel-flow heat exchanger |
| CN103322717A (en) * | 2013-06-17 | 2013-09-25 | 江苏科立德制冷设备有限公司 | Low-temperature vortex parallel compression condensing unit with enhanced vapor injection |
| CN104457059A (en) * | 2013-09-12 | 2015-03-25 | 珠海格力电器股份有限公司 | Gas-liquid separator and air conditioner comprising same |
| CN104457029A (en) * | 2013-09-12 | 2015-03-25 | 珠海格力电器股份有限公司 | Compressor unit and air conditioner comprising same |
| CN104457059B (en) * | 2013-09-12 | 2017-02-15 | 珠海格力电器股份有限公司 | Gas-liquid separator and air conditioner comprising same |
| CN107631526A (en) * | 2017-10-25 | 2018-01-26 | 江苏科立德制冷设备有限公司 | A kind of Large Copacity gas-liquid separation suction manifold applied to refrigeration unit |
| CN109990515A (en) * | 2019-04-30 | 2019-07-09 | 安徽美乐柯制冷空调设备有限公司 | A kind of heat exchange gas-liquid separator with economizer function |
| CN109990515B (en) * | 2019-04-30 | 2023-10-03 | 安徽美乐柯制冷空调设备有限公司 | Heat exchange gas-liquid separator with economizer function |
| CN115265004A (en) * | 2022-07-22 | 2022-11-01 | 安徽众汇制冷有限公司 | Gas-liquid separator with oil return and liquid discharge functions |
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Open date: 20090624 |