CN112412542A - Variable-section supercharger adopting mixed flow blades - Google Patents
Variable-section supercharger adopting mixed flow blades Download PDFInfo
- Publication number
- CN112412542A CN112412542A CN202011320652.5A CN202011320652A CN112412542A CN 112412542 A CN112412542 A CN 112412542A CN 202011320652 A CN202011320652 A CN 202011320652A CN 112412542 A CN112412542 A CN 112412542A
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- CN
- China
- Prior art keywords
- rotor
- supercharger
- exhaust
- section
- booster
- 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
- 239000002912 waste gas Substances 0.000 claims description 14
- 230000001914 calming effect Effects 0.000 claims description 2
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/141—Shape, i.e. outer, aerodynamic form
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/147—Construction, i.e. structural features, e.g. of weight-saving hollow blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/40—Application in turbochargers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Architecture (AREA)
- Supercharger (AREA)
Abstract
The invention relates to the technical field of superchargers, in particular to a variable-section supercharger adopting mixed flow blades, which comprises a supercharger shell and a supercharger rotor, wherein the supercharger rotor comprises a supercharger rotor air compression end and a supercharger rotor exhaust end, the supercharger rotor exhaust end is provided with an exhaust rotor hub, the exhaust rotor hub comprises a hub body and a plurality of blades combined with the hub body, and the hub body is fixed on a rotor shaft, and the variable-section supercharger is characterized in that: the vanes are curved surfaces and are bent backwards, the edges of the vanes are deflected from the middle part to the two ends to form a two-section structure, one section which is opposite to the nozzle ring is folded from the middle part to the rotation center of the exhaust rotor hub, and one section which is communicated with the exhaust outlet of the supercharger is attached to the inner cavity of the volute at the exhaust end of the supercharger.
Description
Technical Field
The invention relates to the technical field of superchargers, in particular to a variable-section supercharger adopting mixed flow blades.
Background
The method for supercharging air entering a combustion chamber of a fuel engine is a common method in the prior art, and the conventional supercharging modes commonly comprise mechanical supercharging and electronic supercharging.
At present, the turbo charger has been widely adopted on the diesel engine, and the pressure boost technique is becoming mature day by day, and each institute and colleges are all working on improving and improving, and wherein the most important is the improvement of efficiency and the application of new material, and the booster total efficiency has the triplex to constitute: the total efficiency η is the turbine efficiency x mechanical efficiency x compressor efficiency. The invention mainly discusses the design of impellers, particularly impellers at the exhaust end of a supercharger, and please refer to a partial sectional view of a traditional impeller shown in figure 2, wherein the traditional impeller comprises a hub body 1a and blades 1b combined with the hub body 1a, the outer edges 1c of the blades 1b of the impeller are kept parallel to the space of a rotating central line, the outer edges 1c of the blades are parallel to the space of the rotating central line of the hub body 1a, the kinetic energy loss is small when the impeller is washed by exhaust gas, and the kinetic energy utilization efficiency of the exhaust gas is low.
Disclosure of Invention
The invention aims to provide a variable-section supercharger adopting mixed flow blades.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides an adopt variable cross section booster of mixed flow blade, includes booster casing, booster rotor, the booster rotor includes booster rotor end of calming anger and booster rotor waste gas end, booster rotor waste gas end is equipped with waste gas rotor wheel hub, waste gas rotor wheel hub includes the wheel hub body and the most blade that combines with the wheel hub body, the wheel hub body is fixed in on the rotor shaft, the blade is curved surface and blade profile back bend, the blade edge is from the middle part to both ends bias and is two segmentation structures, just draws in from the middle part to waste gas rotor wheel hub rotation center with one section that the nozzle cascade is just right, laminates with one section and booster waste gas end volute inner chamber of booster exhaust outlet intercommunication.
Preferably, the exhaust end of the supercharger rotor further comprises a nozzle ring arranged at the exhaust end of the supercharger and matched with the hub of the exhaust rotor, a plurality of nozzle ring blades uniformly arranged are arranged on the nozzle ring, and a nozzle backing plate is arranged between each nozzle ring blade and the supercharger shell.
The invention has the beneficial effects that: the supercharger vanes are designed by adopting mixed flow vanes, the vane shapes are backward bent, and the shapes of the air outlet edges are changed into oblique angle structures, so that the waste gas utilization rate is increased, the high-speed power performance of an engine can be greatly improved, the fuel efficiency and the transient reaction speed are improved, and the national emission requirements are met.
Drawings
FIG. 1 is a schematic longitudinal cross-sectional view of an embodiment of the present invention;
FIG. 2 is a schematic view of a prior art turbine exhaust rotor;
FIG. 3 is an exhaust rotor hub in an embodiment of the present invention.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
It should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used broadly in the present invention, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Further, in the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not in direct contact, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature. The terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the invention.
As shown in fig. 1 and fig. 2, a variable cross section supercharger adopting mixed flow blades, comprises a supercharger shell 2 and a supercharger rotor, wherein the supercharger rotor comprises a supercharger rotor air compression end and a supercharger rotor exhaust end, the supercharger rotor exhaust end is provided with a waste gas rotor hub, the waste gas rotor hub 1 comprises a hub body 1a and a plurality of blades 1b combined with the hub body, the hub body 1a is fixed on a rotor shaft, the blades 1b are curved surfaces and blade-shaped backward bends, the blade edges are deflected from the middle part to two ends to form a two-section structure, one section right opposite to a nozzle ring 5 is folded from the middle part to the rotation center of the waste gas rotor hub, and one section communicated with a supercharger exhaust outlet is attached to the inner cavity of a supercharger exhaust end volute.
Fig. 2 shows the specific shape of the above-mentioned required exhaust rotor hub, the blade edge of the exhaust rotor hub is a typical two-segment structure, the middle part of the exhaust rotor hub presents a distinct turning point, the upper segment is adapted to the inner shape of the supercharger housing, the lower end is an exhaust gas inlet corresponding to the nozzle ring of the supercharger, the exhaust gas enters the nozzle ring from the exhaust gas inlet in the housing and enters the exhaust rotor hub through the nozzle ring, and the segment is opposite to the blade edge of the nozzle ring and inclines from the turning point to the center of the exhaust rotor hub; in addition, as can be seen from fig. 2, the blades of the exhaust gas rotor hub are curved and also bent backwards, and the space between the roots of two adjacent blades is narrowed from bottom to top, so that the kinetic energy and the potential energy of the exhaust gas can be absorbed by the rotor and converted into the kinetic energy of the rotor as much as possible.
Preferably, the exhaust end of the supercharger rotor further comprises a nozzle ring 5 arranged at the exhaust end of the supercharger and matched with the hub of the exhaust rotor, a plurality of nozzle ring blades 4 uniformly arranged are arranged on the nozzle ring 5, and a nozzle backing plate 3 is arranged between each nozzle ring blade 4 and the supercharger shell.
It should be noted that the variable cross-section of the present invention is realized by the variable cross-section technology of the nozzle ring in the prior art, and the method of adjusting the angle of the nozzle ring vanes is a common technical means for those skilled in the art, and will not be described in detail herein, and this is not an inventive source in this embodiment.
The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.
Some of the drawings and descriptions of the present invention have been simplified to facilitate the understanding of the improvements over the prior art by those skilled in the art, and some other elements have been omitted from this document for the sake of clarity, and it should be appreciated by those skilled in the art that such omitted elements may also constitute the subject matter of the present invention.
Claims (2)
1. The utility model provides an adopt variable cross section booster of mixed flow blade, includes booster casing, booster rotor, the booster rotor includes booster rotor end of calming anger and booster rotor waste gas end, booster rotor waste gas end is equipped with waste gas rotor wheel hub, waste gas rotor wheel hub includes the wheel hub body and the most blade that combines with the wheel hub body, the wheel hub body is fixed in on the rotor shaft, its characterized in that: the vanes are curved surfaces and are bent backwards, the edges of the vanes are deflected from the middle part to the two ends to form a two-section structure, one section which is opposite to the nozzle ring is folded from the middle part to the rotation center of the exhaust rotor hub, and one section which is communicated with the exhaust outlet of the supercharger is attached to the inner cavity of the volute at the exhaust end of the supercharger.
2. A variable cross-section supercharger using mixed flow vanes according to claim 1, wherein: the exhaust end of the supercharger rotor further comprises a nozzle ring which is arranged at the exhaust end of the supercharger and matched with the hub of the exhaust rotor, a plurality of nozzle ring blades which are uniformly arranged are arranged on the nozzle ring, and a nozzle base plate is arranged between each nozzle ring blade and the supercharger shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011320652.5A CN112412542A (en) | 2020-11-23 | 2020-11-23 | Variable-section supercharger adopting mixed flow blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011320652.5A CN112412542A (en) | 2020-11-23 | 2020-11-23 | Variable-section supercharger adopting mixed flow blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112412542A true CN112412542A (en) | 2021-02-26 |
Family
ID=74778108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011320652.5A Pending CN112412542A (en) | 2020-11-23 | 2020-11-23 | Variable-section supercharger adopting mixed flow blades |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112412542A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010024915A (en) * | 2008-07-17 | 2010-02-04 | Ihi Corp | Turbocharger |
| JP2013253519A (en) * | 2012-06-06 | 2013-12-19 | Ihi Corp | Variable nozzle unit and variable capacity type supercharger |
| US20150086396A1 (en) * | 2013-09-26 | 2015-03-26 | Electro-Motive Diesel Inc. | Turbocharger with mixed flow turbine stage |
| US20190264575A1 (en) * | 2016-11-10 | 2019-08-29 | Ihi Corporation | Variable nozzle unit and turbocharger |
| CN210264827U (en) * | 2019-05-07 | 2020-04-07 | 常州环能涡轮动力股份有限公司 | Turbine rotor and turbocharger |
-
2020
- 2020-11-23 CN CN202011320652.5A patent/CN112412542A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010024915A (en) * | 2008-07-17 | 2010-02-04 | Ihi Corp | Turbocharger |
| JP2013253519A (en) * | 2012-06-06 | 2013-12-19 | Ihi Corp | Variable nozzle unit and variable capacity type supercharger |
| US20150086396A1 (en) * | 2013-09-26 | 2015-03-26 | Electro-Motive Diesel Inc. | Turbocharger with mixed flow turbine stage |
| US20190264575A1 (en) * | 2016-11-10 | 2019-08-29 | Ihi Corporation | Variable nozzle unit and turbocharger |
| CN210264827U (en) * | 2019-05-07 | 2020-04-07 | 常州环能涡轮动力股份有限公司 | Turbine rotor and turbocharger |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for 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: 20210226 |