CN106762671B - Exhaust pipe structure and compressor - Google Patents
Exhaust pipe structure and compressor Download PDFInfo
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- CN106762671B CN106762671B CN201611050408.5A CN201611050408A CN106762671B CN 106762671 B CN106762671 B CN 106762671B CN 201611050408 A CN201611050408 A CN 201611050408A CN 106762671 B CN106762671 B CN 106762671B
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- exhaust pipe
- pipe structure
- oil
- compressor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
Abstract
The invention provides an exhaust pipe structure and a compressor. According to the exhaust pipe structure, the exhaust pipe has a tapered section and a divergent section inside along the airflow direction. By arranging the tapered section and the gradually expanding section, the oil-gas mixture can collide with the inner wall surface of the tapered section of the exhaust pipe in the exhaust process, so that oil and gas are separated. Then through the divergent section, the air flow expands gradually and finally is discharged out of the exhaust pipe more uniformly. Compared with the existing exhaust process, the whole process has the advantages that the flow channel is obviously prolonged, the collision separation process is added, and the oil content efficiency is effectively improved.
Description
Technical Field
The invention relates to the field of compressors, in particular to an exhaust pipe structure and a compressor.
Background
At present, the screw compressor is small in structure, compact in internal space, uneven in distribution of flow fields at an exhaust end, too short in partial flow channels, and low in oil content efficiency, and oil and gas are not completely separated and are finished. Because the oil content efficiency is not high, the system needs to improve the oil return amount, the stable operation of the compressor can be ensured, the oil return amount is increased, the volumetric efficiency of the compressor is greatly influenced, and the performance of the compressor is reduced.
Disclosure of Invention
The invention aims to provide an exhaust pipe structure and a compressor capable of improving oil content efficiency.
The invention provides an exhaust pipe structure, which is characterized in that a gradually-reducing section and a gradually-expanding section are arranged in an exhaust pipe along the airflow direction.
Further, the tail end of the tapered section is connected with the head end of the diverging section.
Further, a diversion trench is arranged on the inner wall of the tapered section.
Further, the diversion trench is a spiral diversion trench.
Further, the tapered section is a conical tapered section, and the diverging section is a conical diverging section.
Further, the cone angle of the conical tapered section is greater than the cone angle of the conical diverging section.
Further, the taper angle α of the tapered section is 20 ° to 30 °.
Further, α is 28 °.
Further, the taper angle β of the tapered divergent section is 20 ° to 30 °.
Further, β is 22 °.
The invention also provides a compressor which comprises the exhaust pipe structure.
According to the exhaust pipe structure and the compressor, the gradually-reducing section and the gradually-expanding section are arranged, so that the oil-gas mixture collides with the inner wall surface of the gradually-reducing section of the exhaust pipe in the exhaust process, and the oil and the gas are separated. Then through the divergent section, the air flow expands gradually and finally is discharged out of the exhaust pipe more uniformly. Compared with the existing exhaust process, the whole process has the advantages that the flow channel is obviously prolonged, the collision separation process is added, and the oil content efficiency is effectively improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is an axial cross-sectional structural schematic of an exhaust pipe structure according to the present invention.
Description of reference numerals:
10. a tapered section; 11. a diversion trench; 20. and (4) a divergent section.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, according to the exhaust pipe structure of the present invention, the exhaust pipe has a tapered section 10 and a divergent section 20 inside thereof in the direction of gas flow. According to the invention, by arranging the tapered section 10 and the gradually expanding section 20, in the exhaust process, the oil-gas mixture collides with the inner wall surface of the tapered section 10 of the exhaust pipe, so that oil and gas are separated. Then through the diverging section 20, the gas flow expands gradually and exits the stack more uniformly. Compared with the existing exhaust process, the whole process has the advantages that the flow channel is obviously prolonged, the collision separation process is added, and the oil content efficiency is effectively improved.
Specifically, the tail end of the tapered section 10 is connected with the head end of the diverging section 20, so that the airflow passing through the tapered section 10 can immediately enter the diverging section 20 to expand, the streaming effect is increased, and the separation efficiency is improved.
Preferably, the inner wall of the tapered section 10 is provided with a diversion trench 11, which is beneficial to improving the separation effect on one hand; on the other hand, the separated oil is favorable for backflow. More preferably, the guiding groove 11 is a spiral guiding groove 11, so as to promote the rotation of the oil-gas mixture and improve the oil-gas separation efficiency under the action of centrifugal force.
In the present invention, as shown in fig. 1, the tapered section 10 is a conical tapered section, and the diverging section 20 is a conical diverging section, so that the air flow is uniformly contracted and expanded, and the processing is also convenient. Generally, the cone angle of the conical reducing section is larger than that of the conical expanding section, so that oil and gas collision separation is facilitated, and the oil separation efficiency is improved.
The design of the cone angle of the conical reducing section, the cone angle of the conical expanding section and the diversion trench 11 needs to consider the exhaust flow of different models and the pressure loss. Generally, the principle of selecting the taper angle is to increase the length of the flow channel as much as possible on the premise of satisfying the pressure and the flow rate. The length of the exhaust pipe is defined as a standard length, and the effect of the taper angle alpha of the 10 tapered section is better within the range of 20 degrees to 30 degrees through calculation; preferably, α is 28 °. The taper angle beta of the divergent section 20 is selected from 20 degrees to 30 degrees, so that the effect is better; preferably, β is 22 °. The design of the guide grooves 11 mainly takes into consideration the reduction of pressure loss while extending the length of the flow path. The optimized diversion trench 11 can ensure that the flow velocity of the outlet is relatively uniform by performing simulation on the flow field in the pipeline. According to analysis and correction, the spiral guide groove 11 has the most uniform exhaust and relatively small pressure loss, and the reasonable design of the taper angle and the guide groove 11 can ensure that the flow loss of the air flow passing through the exhaust pipe is as small as possible, the exhaust is more uniform, and the oil-gas separation efficiency is high.
The invention also provides a compressor, which comprises the exhaust pipe structure, so that the oil content efficiency is improved, the whole size of the compressor can be reduced, and the performance coefficient of the compressor can be improved. If the oil content efficiency is high enough, even can simplify external oil content, reduce the whole size.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
according to the exhaust pipe structure and the compressor, the tapered section 10 and the gradually expanding section 20 are arranged, so that an oil-gas mixture collides with the inner wall surface of the tapered section 10 of the exhaust pipe in the exhaust process, and oil and gas are separated. Then through the diverging section 20, the gas flow expands gradually and exits the stack more uniformly. Compared with the existing exhaust process, the whole process has the advantages that the flow channel is obviously prolonged, the collision separation process is added, and the oil content efficiency is effectively improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a blast pipe structure, its characterized in that is applied to the compressor, along the air current direction, inside convergent section (10) and the divergent section (20) that have of blast pipe, the end of convergent section (10) with the head end of divergent section (20) is connected, set up guiding gutter (11) on the inner wall of convergent section (10), guiding gutter (11) are for being used for promoting the rotatory spiral guiding gutter (11) that improves oil-gas separation efficiency under the effect of centrifugal force of oil-gas mixture, convergent section (10) are toper convergent section, divergent section (20) are toper divergent section, the cone angle of toper convergent section is greater than the cone angle of toper divergent section.
2. The exhaust pipe structure according to claim 1,
the conical taper section has a taper angle α of 20 ° to 30 °.
3. The exhaust pipe structure according to claim 2,
alpha is 28 deg..
4. The exhaust pipe structure according to claim 1,
the conical angle beta of the conical divergent section is 20 DEG to 30 deg.
5. The exhaust pipe structure according to claim 4,
beta is 22 deg.
6. A compressor comprising a discharge pipe arrangement, wherein the discharge pipe arrangement is as claimed in any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611050408.5A CN106762671B (en) | 2016-11-22 | 2016-11-22 | Exhaust pipe structure and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611050408.5A CN106762671B (en) | 2016-11-22 | 2016-11-22 | Exhaust pipe structure and compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106762671A CN106762671A (en) | 2017-05-31 |
| CN106762671B true CN106762671B (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611050408.5A Active CN106762671B (en) | 2016-11-22 | 2016-11-22 | Exhaust pipe structure and compressor |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730192B (en) * | 2018-04-25 | 2019-08-23 | 广州万宝集团压缩机有限公司 | A kind of oil supply mechanism and screw compressor |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5342183A (en) * | 1992-07-13 | 1994-08-30 | Copeland Corporation | Scroll compressor with discharge diffuser |
| US5502984A (en) * | 1993-11-17 | 1996-04-02 | American Standard Inc. | Non-concentric oil separator |
| CN2264853Y (en) * | 1996-06-07 | 1997-10-15 | 陈降祥 | Intake duct of gas burner |
| JP3819247B2 (en) * | 2000-03-17 | 2006-09-06 | カルソニックコンプレッサー株式会社 | Gas compressor |
| CN2668874Y (en) * | 2003-11-03 | 2005-01-05 | 施宗荣 | Engine air-flowing auxiliary reinforcing device |
| CN201395582Y (en) * | 2009-05-15 | 2010-02-03 | 北京工业大学 | Dehydration, liquid-removal, purification and separation skid-mounted supersonic device for natural gas |
| CN103331069B (en) * | 2013-01-23 | 2016-05-04 | 厦门美时美克空气净化有限公司 | A kind of high-efficiency air filtering dehydrating unit |
| CN205064218U (en) * | 2015-10-22 | 2016-03-02 | 珠海凌达压缩机有限公司 | Compressor, upper cover and blast pipe assembly and blast pipe structure thereof |
| CN205372697U (en) * | 2016-02-03 | 2016-07-06 | 林志斌 | Integrated kitchen eddy current type oil smoke separation guiding device |
| CN206409389U (en) * | 2016-11-22 | 2017-08-15 | 珠海格力电器股份有限公司 | Exhaust pipe structure and compressor |
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