CN101258330A - Turbocharger with bearing housing having an aerodynamically enhanced compressor wheel pocket geometry - Google Patents
Turbocharger with bearing housing having an aerodynamically enhanced compressor wheel pocket geometry Download PDFInfo
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- CN101258330A CN101258330A CN 200680033009 CN200680033009A CN101258330A CN 101258330 A CN101258330 A CN 101258330A CN 200680033009 CN200680033009 CN 200680033009 CN 200680033009 A CN200680033009 A CN 200680033009A CN 101258330 A CN101258330 A CN 101258330A
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- middle casing
- aerodynamics
- turbosupercharger
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Abstract
The present invention provides a turbocharger unit (10) having an aerodynamically enhanced pocket (52), comprising a turbine (14) having a turbine housing (24) and a turbine wheel (26) connected to a shaft (20) along with a compressor (12) having a compressor housing (16) and a compressor wheel (18) mounted on the same shaft (20). There is an intermediate housing (28) disposed between the turbine housing (24) and the compressor housing (16), circumscribing the shaft (20), and having a compressor wheel pocket (50). There is a series of bearings (30) located in the intermediate housing (28) for supporting the shaft (20). There is also a series of fluid passages (33) located in the intermediate housing (28) which provide fluid to lubricate the bearings (30). A seal (42) is used for the prevention of oil from entering the compressor wheel pocket (50). The compressor wheel pocket (50) has an aerodynamically enhanced pocket (52) for the improvement of pressure balance behind the compressor wheel (18), preventing the oil in the intermediate housing (28) from entering the compressor housing (16).
Description
Cross reference to related application
The application requires the Application No. 11/242 of submission on October 3rd, 2005,344 rights and interests, this application then requires the rights and interests of the U.S. Provisional Patent Application submitted on September 9th, 2005 number 60/716,016, and the whole specification of this temporary patent application is incorporated into this by reference and clearly.
Technical field
The present invention relates to turbosupercharger and prevent owing to the insufficient leakage of oil that causes of the pressure balance of sealing up at compressor oil.
Background technique
In order to improve the specific power in the motor, turbosupercharger is a kind of normally used equipment.Turbosupercharger comprises turbo machine and compressor.Turbo machine has turbine cylinder and turbine wheel; Compressor has compressor housing and compressor impeller.Compressor impeller and turbine wheel are installed on the common shaft.A middle casing is between turbine cylinder and compressor housing, and turbine cylinder and compressor housing all are connected to this middle casing.This middle casing has a compressor wheel pocket; This compressor impeller is positioned partially in this compressor wheel pocket, and is positioned partially in the compressor housing.
By gas exhaust manifold and enter exhaust flow in the turbine cylinder and make the turbine wheel rotation from motor.When turbine wheel spins, compressor impeller also rotates.When compressor wheel spins, fresh air is compressed and is forced in the intake manifold of motor.When air stream overcompression engine housing, under certain operational condition, compressor impeller is with high rotational speed, but boost pressure is lower.This situation can occur in when vehicle motor during with the running of high idling speed and can cause imbalance of pressure on the side that is provided with middle casing at compressor impeller.This imbalance of pressure occurs in the zone between compressor impeller and the middle casing.
This middle casing also comprises the one group of bearing that is used to support described axle.Turbine wheel and compressor impeller all are installed on this axle, and this axle rotates in bearing.These bearings are lubricated, and middle casing also has and is used for preventing the labyrinth of oil leakage to compressor housing.
This imbalance of pressure causes acting on labyrinth and by the underpressure on the oil of its constraint, and this can cause that oil leakage is in compressor wheel pocket and enter in the compressor housing.Oil leakage can cause stained on compressor impeller and the compressor housing and with the relevant problem of air inlet member of leading to motor.
Summary of the invention
In view of the above, the present invention is intended to prevent imbalance of pressure between compressor impeller and middle casing.The present invention is a kind of turbocharger unit with aerodynamics enhanced pocket, comprise a turbo machine with turbine cylinder and turbine wheel, this turbine wheel is connected on the axle with a compressor, and this compressor has compressor housing and the compressor impeller that is installed on the same axle.A middle casing is housed between this turbine cylinder and the compressor housing, and it is around this axle and have a compressor wheel pocket.A series of bearings that are used to support this are arranged in middle casing.Also have a series of fluid passage in the middle casing, they are provided for the fluid of lubricated these bearings.Used a Sealing to prevent that oil from entering in the compressor wheel pocket.This compressor wheel pocket has a kind of aerodynamics enhanced pocket, is used for improving pressure balance in the compressor impeller back, prevents that the oil in the middle casing from entering compressor housing.
In one first embodiment, this aerodynamics enhanced pocket is a kind of cochlear edge that is made of the rounded recess under the sharpened edge of locating in the end of described compressor wheel pocket.
In one second embodiment, this aerodynamics enhanced pocket is a kind of knife edge that is made of an acute angle in the edge of described compressor wheel pocket.
From detailed description provided below, can know other applications of the present invention.Should be appreciated that though detailed description and particular example illustrate the preferred embodiments of the present invention, they are intended to only be used for schematic purpose but not are intended to be used to limit the scope of the invention.
Description of drawings
From detailed description and accompanying drawing, can understand the present invention more fully, wherein:
Fig. 1 is the cross sectional view that has the turbocharger unit of aerodynamics enhanced pocket according to first embodiment of the invention;
Fig. 2 is the amplification cross sectional view that has the middle casing that the part of aerodynamics enhanced pocket disconnects according to first embodiment of the invention;
Fig. 3 has the cross sectional view that the height of the middle casing of aerodynamics enhanced pocket amplifies according to first embodiment of the invention; With
Fig. 4 is the amplification cross sectional view that has the middle casing that the part of aerodynamics enhanced pocket disconnects according to second embodiment of the invention.
Embodiment
The following explanation of preferred embodiment only is exemplary in itself, and is intended to limit the present invention, its application or purposes absolutely not.
Referring to Fig. 1-3, the turbocharger unit that is combined with first embodiment is totally represented with 10.Turbocharger unit 10 comprises compressor 12 and turbo machine 14.Compressor 12 comprises compressor housing 16, and utilizes locking nut 22 to be fixed to the compressor impeller 18 of axle on 20.Turbo machine 14 comprises turbine cylinder 24 and the turbine wheel 26 that is welded on the axle 22.Middle casing 28 is connected between turbine cylinder 24 and compressor housing 16 and with the two.One group of bearing 30 and a thrust bearing 32 are arranged in middle casing 28.These bearings 30 and thrust bearing 32 receive oil from a series of fluid passage 33.This a series of fluid passage 33 is made of an oil supply gallery 34, major oil path 36, first angled passageway 38 and one second angled passageway 40.Oil supply gallery 34 supplies to oil in the major oil path 36; Major oil path 36 is delivered directly to thrust bearing 32, first angled passageway 38 and second angled passageway 40 with oil.This first angled passageway 38 and second angled passageway 40 are transported to bearing 30 with oil.By using the Sealing that in Fig. 1, is shown labyrinth 42 to prevent that with oil shield 44 oil from contacting with compressor impeller 18 formation.
Various embodiment of the present invention will be described now.At normal operation period, flow by turbo machine 14 from the waste gas of vehicle motor, and turbine wheel 26 is rotated with high rotating speed.Cause that with high rotational speed turbine wheel 26 axle 20 rotates with the speed identical with turbine wheel 26 with compressor impeller 18.Compressor impeller 18 makes the air compression in the compressor housing 16, and forces pressurized air to enter the intake manifold (not shown) of motor.The oil that first angled passageway 38 and second angled passageway 40 are flow through in utilization lubricates bearing 30.
In these figure, a sharpened edge 48 is represented as the part of the compressor wheel pocket 50 that is arranged in middle casing 28.In first embodiment, this compressor wheel pocket 50 is shown to have the aerodynamics enhanced pocket 52 of spoon-shaped recess 54.Spoon-shaped recess 54 is included in the sharpened edge 48 in the middle casing 28, and with sphering, the cochlear mode is recessed to form a rounded recess 56.When turbosupercharger 10 under the oily stream condition of height during (for example under high-engine rotating speed, the low engine load operating conditions) running, this spoon-shaped recess 54 has alleviated the imbalance of pressure that is caused by compressor impeller 18.This spoon-shaped recess 54 can be made of different radiuses with compensation because the imbalance of pressure of the various scopes that the size of the size of middle casing 28, compressor impeller 18 and the air mass flow by compressor 12 cause.
The second embodiment of the present invention is shown among Fig. 4.In this embodiment, the form of the aerodynamics enhanced pocket 52 in middle casing 28 knife-shaped recess 58 that the sharpened edge identical with the spoon-shaped recess 54 of middle casing 28 48 limits of serving as reasons is set at of angle 62 with formation and becomes corner recess 60 but be recessed into then in the housing.When turning round down, knife-shaped recess 58 shown in Figure 4 has alleviated the imbalance of pressure that is caused by compressor impeller 18 in the oily stream condition of height (for example high-engine rotating speed, low engine load operating conditions) when turbosupercharger 10.This knife-shaped recess 58 can be made of with compensation because the imbalance of pressure of the various scopes that the size of the size of middle casing 28, compressor impeller 18 and the air mass flow by compressor 12 cause different amount.
Should notice that this spoon-shaped recess 54 and knife-shaped recess 58 all limit sharpened edge 48 in middle casing 28.Among two embodiments described herein, the diameter of sharpened edge 48 is identical.
By eliminate when compressor impeller 18 under high rotating speed, rotates and simultaneously turbosupercharger 10 be not loaded any suction force that is produced, the alleviating of the back pressure balance between middle casing 28 and compressor impeller 18 improved labyrinth 42 and kept oily ability in middle casing 28.
Only be exemplary on the illustrative in nature of the present invention, and expect that therefore the change that does not deviate from main idea of the present invention is included in the scope of the present invention.This change should not be considered to depart from the spirit and scope of the invention.
Claims (23)
1. turbosupercharger comprises:
A turbo machine has a turbine cylinder and a turbine wheel that is connected on the axle;
A compressor has a compressor housing and a compressor impeller that is installed on the described axle;
Be placed at a middle casing between described turbine cylinder and the described compressor housing, this middle casing has a compressor wheel pocket around described axle, and described compressor impeller extends in the described compressor wheel pocket at least in part;
Be arranged in one or more bearings of described middle casing, be used to support described axle;
Be arranged in one or more fluid passages of described middle casing, be used to allow the described bearing of oil lubrication;
Be used for preventing that described oil from entering a Sealing of described compressor housing; And
An aerodynamics enhanced pocket in described compressor wheel pocket is used to prevent that the air pressure around described compressor impeller is unbalance, and prevents that described oil ring is around described seal leakage and enter described compressor housing.
2. according to the turbosupercharger of claim 1, wherein said aerodynamics enhanced pocket is a spoon-shaped recess.
3. according to the turbosupercharger of claim 2, wherein said spoon-shaped recess is to be made of a sharpened edge and a rounded recess in the end of described compressor wheel pocket.
4. according to the turbosupercharger of claim 1, wherein said aerodynamics enhanced pocket is a knife-shaped recess.
5. according to the turbosupercharger of claim 4, wherein said knife-shaped recess is to have one by the edge in described compressor wheel pocket to become a sharpened edge of corner recess to constitute.
6. according to the turbosupercharger of claim 1, wherein said Sealing is a labyrinth.
7. turbosupercharger comprises:
A turbo machine has a turbine wheel and a turbine cylinder, and described turbine wheel is arranged in described turbine cylinder and is installed on the axle;
A compressor has a compressor impeller and a compressor housing, and described compressor impeller is installed in described and goes up and be arranged in described compressor housing;
A middle casing between described turbine cylinder and described compressor housing;
A compressor wheel pocket, it has a sharpened edge, but is associated with described middle casing with working method and is used to receive the part of described compressor impeller; With
An aerodynamics enhanced pocket in described compressor wheel pocket is used for the air-flow of balance around described compressor impeller.
8. according to the turbosupercharger of claim 7, wherein said middle casing also comprises the one or more bearings that are used to support described axle.
9. according to the turbosupercharger of claim 7, wherein said middle casing also comprises and is arranged in one or more fluid passages that described middle casing is used to provide the oil that described one or more bearings are lubricated.
10. according to the turbosupercharger of claim 7, wherein said middle casing also comprises a Sealing, but its place of working is associated with described fluid passage series to be used for preventing that oil from entering described compressor housing.
11. according to the turbosupercharger of claim 10, wherein said Sealing is a labyrinth.
12. turbosupercharger according to claim 7, wherein said aerodynamics enhanced pocket is a spoon-shaped recess, and described spoon-shaped recess has a rounded recess and described sharpened edge is positioned near the described compressor impeller in described compressor wheel pocket.
13. turbosupercharger according to claim 7, wherein said aerodynamics enhanced pocket is a knife-shaped recess that becomes the depression at angle to constitute with by described sharpened edge, and described sharpened edge is with near the described depression that becomes the angle is positioned at described compressor impeller.
14. one kind is used for comprising in the method for turbocharger unit balance by the air-flow of compressor housing:
A turbo machine with a turbine wheel and a turbine cylinder is provided, and described turbine wheel is installed on the axle and by described turbine cylinder and surrounds;
A compressor with a compressor impeller and a compressor housing is provided, and described compressor impeller is installed in described axle and goes up and surrounded by described compressor housing;
A middle casing that places between described turbine cylinder and the described compressor housing and be connected with the two is provided, and a compressor wheel pocket that places described middle casing; And
An aerodynamics enhanced pocket with a sharpened edge is provided, and described aerodynamics enhanced pocket places described compressor wheel pocket; And
By utilizing described aerodynamics enhanced pocket to reduce near the turbulent airflow amount the described sharpened edge and at least a portion of described compressor impeller being positioned to come balance to center on the air-flow of described compressor impeller in the described aerodynamics enhanced pocket.
15., further provide at least one bearing that is used to support described axle that is arranged in described middle casing according to the method for claim 14.
16., further provide the one or more fluid passages that are arranged in described middle casing according to the method for claim 14.
17., further comprise the step of utilizing described at least one bearing of oil lubrication that flows through described one or more fluid passages according to the method for claim 14.
18., further comprise by providing a Sealing that places described middle casing to prevent that described oil from entering the step of described compressor housing according to the method for claim 17.
19., prevent the step of oil around described seal leakage thereby further provide by the air-flow that utilizes described aerodynamics enhanced pocket to come balance to center on described compressor impeller according to the method for claim 18.
20., further provide described aerodynamics enhanced pocket is made of a spoon-shaped recess according to the method for claim 14.
21., further provide to make described spoon-shaped recess by described sharpened edge and place a rounded recess of described compressor wheel pocket to constitute according to the method for claim 20.
22., further comprise described aerodynamics enhanced pocket is made of a knife-shaped recess according to the method for claim 14.
23. according to the method for claim 22, further make described tooth shape depression by described sharpened edge be located at described compressor wheel pocket in one become the depression at angle to constitute.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US71601605P | 2005-09-09 | 2005-09-09 | |
| US60/716,016 | 2005-09-09 | ||
| US11/242,344 | 2005-10-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101258330A true CN101258330A (en) | 2008-09-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200680033009 Pending CN101258330A (en) | 2005-09-09 | 2006-08-29 | Turbocharger with bearing housing having an aerodynamically enhanced compressor wheel pocket geometry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101258330A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446301B (en) * | 2008-12-17 | 2011-04-20 | 中国航天科技集团公司第六研究院第十一研究所 | Miniature high-speed air turbine pump |
| CN103443407A (en) * | 2011-03-29 | 2013-12-11 | 诺沃皮尼奥内有限公司 | Sealing systems for turboexpanders for use in organic rankine cycles |
| CN108884757A (en) * | 2016-05-20 | 2018-11-23 | 株式会社Ihi | The bearing construction and booster of booster |
| CN109923284A (en) * | 2016-11-22 | 2019-06-21 | 苏尔寿管理有限公司 | The shaft seal of upstream contactless part and downstream hanging ring including such as labyrinth seal |
| CN110318863A (en) * | 2018-03-30 | 2019-10-11 | 博格华纳公司 | Bearing anti-rotation pads with integrated oily deflection characteristic part |
-
2006
- 2006-08-29 CN CN 200680033009 patent/CN101258330A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446301B (en) * | 2008-12-17 | 2011-04-20 | 中国航天科技集团公司第六研究院第十一研究所 | Miniature high-speed air turbine pump |
| CN103443407A (en) * | 2011-03-29 | 2013-12-11 | 诺沃皮尼奥内有限公司 | Sealing systems for turboexpanders for use in organic rankine cycles |
| CN103443407B (en) * | 2011-03-29 | 2015-09-09 | 诺沃皮尼奥内有限公司 | For the sealing system for the turbine expander in organic rankine cycle |
| US9822790B2 (en) | 2011-03-29 | 2017-11-21 | Antonio Asti | Sealing systems for turboexpanders for use in organic Rankine cycles |
| CN108884757A (en) * | 2016-05-20 | 2018-11-23 | 株式会社Ihi | The bearing construction and booster of booster |
| US10927759B2 (en) | 2016-05-20 | 2021-02-23 | Ihi Corporation | Bearing structure for turbocharger and turbocharger |
| CN109923284A (en) * | 2016-11-22 | 2019-06-21 | 苏尔寿管理有限公司 | The shaft seal of upstream contactless part and downstream hanging ring including such as labyrinth seal |
| CN110318863A (en) * | 2018-03-30 | 2019-10-11 | 博格华纳公司 | Bearing anti-rotation pads with integrated oily deflection characteristic part |
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Open date: 20080903 |