CN218760034U - Impeller of turbocharger - Google Patents
Impeller of turbocharger Download PDFInfo
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- CN218760034U CN218760034U CN202223197772.8U CN202223197772U CN218760034U CN 218760034 U CN218760034 U CN 218760034U CN 202223197772 U CN202223197772 U CN 202223197772U CN 218760034 U CN218760034 U CN 218760034U
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Abstract
The utility model belongs to the technical field of the turbo charger technique and specifically relates to a turbo charger' S impeller, it includes wheel hub, wheel hub includes neck and disk portion, neck and disk portion circular arc transition form the surface, evenly distributed has a plurality of pairs of banks on the surface, every first blade and the second blade including interval distribution to the bank, first blade is for being close to the S-shaped structure that the neck front end formed to disk portion along surface extension, the second blade is for extending the S-shaped structure that forms to disk portion along the surface from the neck rear end, form the wide circulation passageway in narrow back before forming between first blade and the second blade, and the front end head of first blade and second blade all is the S-shaped, rear end between them passes through the circular arc transition with disk portion. The positions of the first blade and the second blade are distributed differently, and the second blade has the function of shunting airflow; first blade and second blade are the S-shaped, and the front end head of first blade and second blade all is the S-shaped, accord with fluid mechanics performance, effectively reduce the air intake loss.
Description
Technical Field
The utility model belongs to the technical field of the turbo charger technique and specifically relates to a turbo charger's impeller.
Background
Turbocharger engines have been widely used in the automotive field, but the problem of synchronizing turbocharger life with engine life has not been solved. The aluminum alloy impeller is a part which is easy to wear and fail in the turbocharger, so that the casting structure of the impeller is improved, and the mechanical property is improved to solve one of the keys of premature failure of the turbocharger.
The impeller is the heart of the turbocharger, in which the impeller is on the rotor of the turbocharger, having an extremely complex structure. When the turbocharger works, the impeller mainly presses the purified air into the cylinder as much as possible, and then the purified air is converted into kinetic energy to increase the output power of the engine. In the process, the impeller rotates at a high speed, the tangential speed of the wheel rim is high, the flow condition in the impeller is complex, and the impeller is often in severe environments such as high temperature, high pressure, high corrosion and the like, so the conventional common C355 cast impeller cannot meet the requirements, the blank of the cast impeller has poor size consistency, larger weight, low blade strength and general surface quality. And the existing literature for carrying out quantitative optimization on the parameters of the low-pressure casting process of the aluminum alloy impeller is less.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: overcomes the defects in the prior art, and provides the impeller of the turbocharger with reasonable design, higher strength and smaller weight.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a turbo charger 'S impeller, includes wheel hub, wheel hub includes neck and disk portion, neck and disk portion circular arc transition form the surface, evenly distributed has a plurality of pairs of blading on the surface, and every pair of blading includes interval distribution' S first blade and second blade, first blade is for following the S-shaped structure that the surface formed to extending from being close to the neck front end to disk portion, the second blade is for extending the S-shaped structure that forms from neck rear end to disk portion along the surface, forms preceding narrow wide circulation passageway behind the preceding narrow between first blade and the second blade, and the front end head of first blade and second blade all is the S-shaped, and rear end and disk portion between them pass through the circular arc transition.
Further, the upper end edge of the first blade is S-shaped. So set up, have quick guide and reposition of redundant personnel effect to the air current.
Further, the upper end edge of the second blade is curved. So set up, play the effect of further reposition of redundant personnel.
Furthermore, the first blade and the outer surface and the second blade and the outer surface have certain included angles which are 45-60 degrees. So set up, guarantee the quick response of the back impeller of admitting air.
In order to ensure a rapid passage of the air flow, furthermore, the first blade and the outer surface and the second blade and the outer surface are in transition through a circular arc.
Furthermore, the upper surface of the first blade is milled from the front end head part to the rear end point to form parallel strip-shaped grains. With the arrangement, the air flow in the compressor shell can be better guided.
Further, a reference platform with a conical structure is formed in the middle of the disc part in a protruding mode. So set up, guarantee the rotational stability of impeller installation back in the pivot.
Further, the blade sets and the hub are of an integrated structure formed by machining an aluminum alloy forging material through a machining center or a machine tool. So set up, the impeller becomes light, and inertia diminishes, and the response speed of engine when low turning round has become fast, and the more effectual hysteresis that reduces the turbine, turbocharger's efficiency has also obtained the improvement.
Still further, the first blade and the second blade are each provided as 6 blades. Because the machine tool processing is carried out by adopting the aluminum alloy blank, compared with the traditional cast impeller, the blade can be arranged thinner.
The utility model has the advantages that: the utility model is provided with the first blade and the second blade which are distributed differently, and the second blade plays a role in shunting the airflow; the first blade and the second blade are both S-shaped, and the front end heads of the first blade and the second blade are both S-shaped, so that the hydrodynamic property is met, and the air inlet loss is effectively reduced; the rear ends of the two are in arc transition with the disc part, so that the fluency of airflow is ensured; and the aluminum alloy blank is adopted for machine tool processing, so that the impeller becomes light, the inertia becomes small, the response speed of the engine at low torque becomes fast, the delay of the turbine is effectively reduced, and the efficiency of the turbocharger is improved.
Drawings
The present invention will be further described with reference to the accompanying drawings and embodiments.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a side view of fig. 1.
Fig. 4 isbase:Sub>A sectional view in the directionbase:Sub>A-base:Sub>A of fig. 3.
In the figure: 1. the rotor comprises a hub, 11 parts of a neck, 12 parts of a disc, 121 parts of a datum platform, 13 parts of an outer surface, 2 parts of a first blade, 21 parts of a strip line and 3 parts of a second blade.
Detailed Description
The invention will now be further described with reference to the accompanying drawings. The drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1, an impeller of a turbocharger includes a hub 1, the hub 1 includes a neck portion 11 and a disk portion 12, the neck portion 11 and the disk portion 12 form an outer surface 13 in an arc transition manner, 6 pairs of blade sets are uniformly distributed on the outer surface 13, each pair of blade set includes a first blade 2 and a second blade 3 which are distributed at intervals, the first blade 2 is an S-shaped structure formed by extending from a position close to the front end of the neck portion 11 to the disk portion 12 along the outer surface 13, the second blade 3 is an S-shaped structure formed by extending from the rear end of the neck portion 11 to the disk portion 12 along the outer surface 13, a flow passage which is narrow in the front and wide in the rear is formed between the first blade 2 and the second blade 3, the front end heads of the first blade 2 and the second blade 3 are both in an S shape, and the rear ends of the first blade 2 and the second blade 3 and the disk portion 12 are in an arc transition manner.
Wherein, 6 pairs of blade groups and the hub 1 are of an integral structure formed by machining an aluminum alloy forging material by a machining center or a machine tool. In the embodiment, 7075 or 2618 aluminum alloy forging stock is used as a blank.
Specifically, the upper end edge of the first blade 2 is S-shaped. Since the second vane 3 has a smaller length than the first vane 2 and ensures the guidance and diversion of the gas, it is preferable that the upper end edge of the second vane 3 is curved.
In the present embodiment, the first blade 2 and the outer surface and the second blade 3 and the outer surface 13 both have a certain included angle, specifically 58 °. The first blade 2 and the outer surface 13 and the second blade 3 and the outer surface 13 are all transited through circular arcs. The upper surface of the first blade 2 is milled from the front tip end to the rear tip end to form parallel stripe lines 21, as shown in fig. 1 and 2.
As shown in fig. 3 and 4, a reference stage 121 having a tapered structure is formed in the middle of the disk portion 12.
The turbocharger receives exhaust from an engine at a high speed and then drives a rotor impeller to rotate, airflow enters a compressor shell and firstly contacts the outer surface of a first blade 2, and is guided to enter a circulation channel through strip-shaped grains 21 to generate radial acting force, the blades are driven to rotate by the impeller under the action of the radial force, the airflow reaches a second blade 3 along the circulation channel and is divided by the second blade 3, the first blade 2 and the second blade 3 are S-shaped, and the front end heads of the first blade 2 and the second blade 3 are both S-shaped, so that the hydrodynamic performance is met, and the intake loss is effectively reduced; the rear ends of the two are in arc transition with the disc part, so that the fluency of airflow is ensured.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable people skilled in the art to understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (9)
1. A turbocharger impeller comprising a hub, characterized in that: wheel hub includes neck and disk portion, neck and disk portion circular arc transition form the surface, evenly distributed has a plurality of pairs of blading on the surface, and every pair of blading includes interval distribution' S first blade and second blade, first blade is for following the S-shaped structure that the surface extended formation to the disk portion from being close to the neck front end, the second blade is for extending the S-shaped structure that forms along the surface from the neck rear end to the disk portion, forms preceding narrow wide circulation passageway in back between first blade and the second blade, and the front end head of first blade and second blade all is the S-shape, and rear end between them passes through the circular arc with the disk portion and passes through the circular arc transition.
2. The impeller of a turbocharger according to claim 1, wherein: the upper end edge of the first blade is S-shaped.
3. The impeller of a turbocharger according to claim 1, wherein: the upper end edge of the second blade is arc-shaped.
4. The impeller of a turbocharger according to claim 1, wherein: the first blade and the outer surface and the second blade and the outer surface are provided with certain included angles which are 45-60 degrees.
5. The impeller of a turbocharger according to claim 4, wherein: the first blade and the outer surface and the second blade and the outer surface are in circular arc transition.
6. The impeller of a turbocharger according to claim 4, wherein: and the upper surface of the first blade is milled from the front end head part to the rear end point to form parallel strip-shaped grains.
7. The impeller of a turbocharger according to claim 1, wherein: and a reference platform with a conical structure is formed in the middle of the disc part in a protruding mode.
8. The impeller of a turbocharger according to claim 1, wherein: the blade sets and the hub are of an integrated structure formed by machining an aluminum alloy forging material through a machining center or a machine tool.
9. The impeller of a turbocharger according to claim 8, wherein: the first blade and the second blade are both set to be 6 blades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223197772.8U CN218760034U (en) | 2022-11-30 | 2022-11-30 | Impeller of turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223197772.8U CN218760034U (en) | 2022-11-30 | 2022-11-30 | Impeller of turbocharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218760034U true CN218760034U (en) | 2023-03-28 |
Family
ID=85678021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223197772.8U Active CN218760034U (en) | 2022-11-30 | 2022-11-30 | Impeller of turbocharger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218760034U (en) |
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2022
- 2022-11-30 CN CN202223197772.8U patent/CN218760034U/en active Active
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