CN102996507A - Internally circulating device of centrifugal air compressor - Google Patents
Internally circulating device of centrifugal air compressor Download PDFInfo
- Publication number
- CN102996507A CN102996507A CN2012105636809A CN201210563680A CN102996507A CN 102996507 A CN102996507 A CN 102996507A CN 2012105636809 A CN2012105636809 A CN 2012105636809A CN 201210563680 A CN201210563680 A CN 201210563680A CN 102996507 A CN102996507 A CN 102996507A
- Authority
- CN
- China
- Prior art keywords
- impeller
- centrifugal
- opening
- runner
- aditus laryngis
- 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
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
- F04D29/685—Inducing localised fluid recirculation in the stator-rotor interface
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
Abstract
The invention discloses an internally circulating device of a centrifugal air compressor, which comprises an impeller cover and an air inlet elbow, wherein the impeller cover is fixed at the outer side of an impeller; and the air inlet elbow is fixed with the front end of the impeller cover. The internally circulating device of the centrifugal air compressor is characterized in that an inner wall formed by the impeller cover and the air inlet elbow is provided with a reflux body; a flow channel which can be used for circulate air and enhance surge margin is formed between the reflux body and the inner wall; and both ends of the flow channel respectively form an opening and a throat opening with the inner wall. The internally circulating device disclosed by the invention ensures the smooth transition, monotonousness area change and no saltation of the flow channel design from the opening to the throat opening, less influences the use efficiency of the centrifugal air compressor and can greatly enhance the surge margin of the centrifugal air compressor and enlarge the gas flow range by about 14%.
Description
Technical field
The present invention relates to a kind of raising centrifugal-flow compressor surge margin, enlarge the internal circulation apparatus of turbocharger matching condition range, specifically a kind of centrifugal-flow compressor internal circulation apparatus.
Background technique
At present, for satisfying the requirements such as Reduction for Diesel Engines low emission and the increase of power per cylinder density, so that turbosupercharger must satisfy matching efficiency the best in full condition range, this also will make turbosupercharger near the surge line operation, has so also just limited the scope of the coupling operating mode of turbosupercharger.Solely adjust the Capability of Compressor curve of turbosupercharger with traditional design, can not satisfy wide in range coupling operating mode and the requirement of surge margin.Therefore, design a kind ofly on the basis of existing Impeller Design, improve the centrifugal-flow compressor surge margin, the device that enlarges the turbocharger matching condition range becomes the present stage problem that needs to be resolved hurrily.
Summary of the invention
According to the technical problem of above-mentioned proposition, and provide a kind of centrifugal-flow compressor internal circulation apparatus.The present invention mainly forms gas flow by setting up reflux, thereby plays the effect that improves surge margin.
The technological means that the present invention adopts is as follows:
A kind of centrifugal-flow compressor internal circulation apparatus, comprise the impeller cover that is fixed on the impeller outside and the intake elbow of fixing with described impeller cover front end, it is characterized in that: the inwall that consists of at described impeller cover and described intake elbow is provided with reflux, but be formed with the runner of supplied gas circulation, raising surge margin between described reflux and the described inwall, the two ends of described runner form opening and aditus laryngis with described inwall respectively.
Preferably, the central position of described aditus laryngis is concordant along meridional channel with the air inlet aditus laryngis central position of described impeller; Described opening is arranged on the front end of described impeller, and the central position of described opening is 0.125-0.25 times of impeller diameter apart from the perpendicular distance of described impeller front end.
Preferably, the area of described aditus laryngis is the 0.4%-1.2% of described impeller throat area.
Preferably, the area of described opening be described throat area 2-3 doubly.
Preferably, described runner is smooth, Flow area monotonously change and without the runner of sudden change.
Compare than prior art, the present invention mainly sets up the reflux structure between the impeller cover of existing centrifugal-flow compressor and blade wheel structure, form runner between reflux and the inwall, thereby forms internal circulation system; Reflux structure of the present invention can only be arranged on the impeller cover, as long as satisfy the status requirement of runner opening and aditus laryngis, also can cross over simultaneously intake elbow and impeller cover and set within it on the wall, as long as it is smooth excessively to satisfy runner, runner opening and throat location require to get final product.
When flow to be about to occur the separating of impeller, pressure decreased before the impeller, the gas backstreaming that pressure difference can will suck by the runner aditus laryngis is postponed the generation of surge to the impeller front end; When impeller mobile is about to block, air-flow will replenish air inlet by the runner opening, thereby strengthen the obstruction flow.By with upper type, enlarged the coupling condition range of turbosupercharger.Wherein, the opening of runner will guarantee smooth transition to the runner design of aditus laryngis, area monotonously change and without sudden change, thus reach the unresisted circulation of air-flow.
The present invention is pressure-raising mechanism of qi surge margin significantly, and the gas flow scope increases about about 14%.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Fig. 1 is structural representation of the present invention.
Among the figure: 1, reflux 2, impeller cover 3, impeller 4, intake elbow 5, runner 51, opening 52, aditus laryngis
Embodiment
As shown in Figure 1, a kind of centrifugal-flow compressor internal circulation apparatus, comprise the impeller cover 2 that is fixed on impeller 3 outsides and the intake elbow 4 of fixing with described impeller cover 2 front ends, the inwall that consists of at described impeller cover 2 and described intake elbow 4 is provided with reflux 1, but be formed with the runner 5 of supplied gas circulation, raising surge margin between described reflux 1 and the described inwall, the two ends of described runner 5 form opening 51 and aditus laryngis 52 with described inwall respectively.
The central position of described aditus laryngis 52 is concordant along meridional channel with the air inlet aditus laryngis central position of described impeller 3; Described opening 51 is arranged on the front end of described impeller 3, and the central position of described opening 51 is 0.125-0.25 times of impeller diameter apart from the perpendicular distance of described impeller 3 front ends.
The area of described aditus laryngis 52 is the 0.4%-1.2% of described impeller 3 throat areas.
The area of described opening 51 is 2-3 times of described aditus laryngis 52 areas.
Described runner 5 is smooth, Flow area monotonously change and without the runner of sudden change.
The above; only be the better embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to technological scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.
Claims (5)
1. centrifugal-flow compressor internal circulation apparatus, comprise the impeller cover (2) that is fixed on impeller (3) outside and the intake elbow (4) of fixing with described impeller cover (2) front end, it is characterized in that: the inwall that consists of at described impeller cover (2) and described intake elbow (4) is provided with reflux (1), described reflux (1) but and be formed with supplied gas circulation between the described inwall, improve the runner (5) of surge margin, the two ends of described runner (5) form opening (51) and aditus laryngis (52) with described inwall respectively.
2. centrifugal-flow compressor internal circulation apparatus according to claim 1, it is characterized in that: the central position of described aditus laryngis (52) is concordant along meridional channel with the air inlet aditus laryngis central position of described impeller (3); Described opening (51) is arranged on the front end of described impeller (3), and the central position of described opening (51) is 0.125-0.25 times of impeller diameter apart from the perpendicular distance of described impeller (3) front end.
3. centrifugal-flow compressor internal circulation apparatus according to claim 1 and 2, it is characterized in that: the area of described aditus laryngis (52) is the 0.4%-1.2% of described impeller (3) throat area.
4. centrifugal-flow compressor internal circulation apparatus according to claim 1 and 2 is characterized in that: the area of described opening (51) be described aditus laryngis (52) area 2-3 doubly.
5. centrifugal-flow compressor internal circulation apparatus according to claim 1 is characterized in that: described runner (5) is for smooth, Flow area monotonously change and without the runner of sudden change.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105636809A CN102996507A (en) | 2012-12-21 | 2012-12-21 | Internally circulating device of centrifugal air compressor |
| CN2013102114712A CN103277344A (en) | 2012-12-21 | 2013-05-30 | Inner circulating device of centrifugal gas compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105636809A CN102996507A (en) | 2012-12-21 | 2012-12-21 | Internally circulating device of centrifugal air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102996507A true CN102996507A (en) | 2013-03-27 |
Family
ID=47925488
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105636809A Pending CN102996507A (en) | 2012-12-21 | 2012-12-21 | Internally circulating device of centrifugal air compressor |
| CN2013102114712A Pending CN103277344A (en) | 2012-12-21 | 2013-05-30 | Inner circulating device of centrifugal gas compressor |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102114712A Pending CN103277344A (en) | 2012-12-21 | 2013-05-30 | Inner circulating device of centrifugal gas compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN102996507A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108595776A (en) * | 2018-03-29 | 2018-09-28 | 天津大学 | It prewhirls centrifugal impeller and diffuser matching primitives method under air inlet |
| EP3273068A4 (en) * | 2015-03-20 | 2018-11-07 | Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | Centrifugal compressor and supercharger comprising same |
| CN109989942A (en) * | 2017-12-29 | 2019-07-09 | 宁波方太厨具有限公司 | A kind of pressurized centrifugan blower |
| CN110118200A (en) * | 2019-06-14 | 2019-08-13 | 东风汽车集团有限公司 | Compressor housings and compressor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006007347A1 (en) * | 2006-02-17 | 2007-08-30 | Daimlerchrysler Ag | Compressor for an internal combustion engine |
| US7575411B2 (en) * | 2006-05-22 | 2009-08-18 | International Engine Intellectual Property Company Llc | Engine intake air compressor having multiple inlets and method |
| US8272832B2 (en) * | 2008-04-17 | 2012-09-25 | Honeywell International Inc. | Centrifugal compressor with surge control, and associated method |
| JP5479021B2 (en) * | 2009-10-16 | 2014-04-23 | 三菱重工業株式会社 | Exhaust turbocharger compressor |
| CN101749278A (en) * | 2010-02-09 | 2010-06-23 | 清华大学 | Centrifugal compressor asymmetric self-circulation treatment casing based on varied notching width |
| CN203374525U (en) * | 2012-12-21 | 2014-01-01 | 中国北车集团大连机车研究所有限公司 | Inner circulating device of centrifugal-flow compressor |
-
2012
- 2012-12-21 CN CN2012105636809A patent/CN102996507A/en active Pending
-
2013
- 2013-05-30 CN CN2013102114712A patent/CN103277344A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3273068A4 (en) * | 2015-03-20 | 2018-11-07 | Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | Centrifugal compressor and supercharger comprising same |
| CN109989942A (en) * | 2017-12-29 | 2019-07-09 | 宁波方太厨具有限公司 | A kind of pressurized centrifugan blower |
| CN109989942B (en) * | 2017-12-29 | 2024-01-16 | 宁波方太厨具有限公司 | Supercharged centrifugal fan |
| CN108595776A (en) * | 2018-03-29 | 2018-09-28 | 天津大学 | It prewhirls centrifugal impeller and diffuser matching primitives method under air inlet |
| CN108595776B (en) * | 2018-03-29 | 2021-11-30 | 天津大学 | Matching calculation method for centrifugal impeller and diffuser under pre-swirl air inlet |
| CN110118200A (en) * | 2019-06-14 | 2019-08-13 | 东风汽车集团有限公司 | Compressor housings and compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103277344A (en) | 2013-09-04 |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130327 |