CN204200671U - The turbo-charger blower impeller that runoff and oblique flow combine - Google Patents
The turbo-charger blower impeller that runoff and oblique flow combine Download PDFInfo
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- CN204200671U CN204200671U CN201420632713.5U CN201420632713U CN204200671U CN 204200671 U CN204200671 U CN 204200671U CN 201420632713 U CN201420632713 U CN 201420632713U CN 204200671 U CN204200671 U CN 204200671U
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- wheel hub
- oblique flow
- short blade
- runoff
- linear leaf
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Abstract
The turbo-charger blower impeller that a kind of runoff and oblique flow combine, comprise wheel hub, four ~ six linear leafs and four ~ six short blades, linear leaf is the same with short blade quantity, linear leaf and cross-shaped being evenly distributed on of short blade are drawn together on wheel hub, the structure that the flow outlet top of linear leaf and the flow outlet top of short blade adopt runoff and oblique flow to combine, the axis angle a of the hypotenuse that the hypotenuse of linear leaf oblique flow outlet and short blade oblique flow export and wheel hub is all 15 ° ~ 70 °, the sideline of linear leaf footpath outflow opening and the sideline of short blade footpath outflow opening and the axis being parallel of wheel hub, the intersection that oblique flow outlet hypotenuse and runoff export sideline adopts arc transition, concentrate to reduce intersection stress, the wheel disc outside diameter of wheel hub is consistent with the excircle configuration diameter of footpath outflow opening.
Description
Technical field
The utility model relates to turbocharger for gasoline engine technical field, particularly a kind of turbocharger for gasoline engine compressor impeller.
Background technique
Turbocharging technology is the energy utilizing motor combustion gas, rotarily drive turbine wheel rotation by turbine and become mechanical work, the compressor impeller coaxial with turbine wheel also runs up with same speed, after compresses fresh air, send into cylinder, improve air density and the aeration quantity of cylinder, thus improve the power of motor, improve the combustion condition of fuel oil, make fuel oil Thorough combustion, thus fuel consume is reduced, decrease the ratio of harmful substance in the waste gas entering air, and then finally realize environmental protection and energy saving, improve the effect of engine power, play the effect recovering power when motor being worked on plateau simultaneously.
In recent years, petrol engine miniaturization has become a kind of development trend, and in order to improve the power per liter of motor, effective method is coupling exhaust-gas turbocharger the most.Low-speed performance focused on by petrol engine, and require that motor has low-speed big and good fuel-economy performance, this proposes more strict demand to booster performance.And the raising of compressor efficiency effectively can improve the performance of whole pressurized machine, impeller, as the core pneumatic element of gas compressor, plays a leading role to Capability of Compressor.Therefore, the design ap-plication of high-efficiency vane wheel has become inevitable.
At present, except design high-efficiency vane wheel blade profile improves except impeller adiabatic efficiency, on existing high-efficiency vane wheel blank basis, impeller performance also can be made further to be promoted by adjustment impeller size and impeller outlet structure.And for impeller outlet structural design, now widely used pressure booster blower impeller mainly adopts radial-flow impeller structure, traditional radial-flow impeller as shown in Figure 1, comprise wheel hub 1, plural pieces linear leaf 2 and plural pieces short blade 3, linear leaf 2 is the same with short blade 3 quantity, linear leaf 2 and cross-shaped being evenly distributed on of short blade 3 are drawn together on wheel hub 1, the blade tip of linear leaf 2 flow outlet top 2-1 and short blade 3 flow outlet top 3-1 and blade root are on a horizontal line, and with the axis being parallel of wheel hub 1, the wheel disc outside diameter of wheel hub 1 is consistent with the excircle configuration diameter of footpath outflow opening.
Traditional radial-flow impeller Problems existing easily produces backflow in vaneless diffuser import wheel rim side under pressurized machine small flow.
Summary of the invention
The purpose of this utility model be overcome prior art above-mentioned deficiency and the turbo-charger blower impeller that a kind of runoff and oblique flow combine is provided.
The technical solution of the utility model is: the turbo-charger blower impeller that a kind of runoff and oblique flow combine, comprise wheel hub, four ~ six linear leafs and four ~ six short blades, linear leaf is the same with short blade quantity, linear leaf and cross-shaped being evenly distributed on of short blade are drawn together on wheel hub, the structure that the flow outlet top of linear leaf and the flow outlet top of short blade adopt runoff and oblique flow to combine, the axis angle a of the hypotenuse that the hypotenuse of linear leaf oblique flow outlet and short blade oblique flow export and wheel hub is all 15 ° ~ 70 °, the sideline of linear leaf footpath outflow opening and the sideline of short blade footpath outflow opening and the axis being parallel of wheel hub, the intersection that oblique flow outlet hypotenuse and runoff export sideline adopts arc transition, concentrate to reduce intersection stress, the wheel disc outside diameter of wheel hub is consistent with the excircle configuration diameter of footpath outflow opening.
In the mode that the outlet of blade adopts oblique flow outlet and footpath outflow opening to combine, export to improve the too large and impeller outlet exhibition that causes of wheel rim curvature to the uneven state of Flow Field Distribution by oblique flow, balance because oblique flow outlet arranges the situation that backflow appears in improper and diffuser inlet wheel hub that is that cause by footpath outflow opening, and by oblique flow outlet and both footpath outflow openings efficient combination, finally make vaneless diffuser entrance Flow Field Distribution very good, improve the working efficiency of gas compressor.
The utility model compared with prior art has following features:
1, in the mode that the outlet of blade adopts oblique flow outlet and footpath outflow opening to combine, export to improve the too large and impeller outlet exhibition that causes of wheel rim curvature to the uneven state of Flow Field Distribution by oblique flow, balance because oblique flow outlet arranges the situation that backflow appears in improper and diffuser inlet wheel hub that is that cause by footpath outflow opening, and by oblique flow outlet and both footpath outflow openings efficient combination, finally make vaneless diffuser entrance Flow Field Distribution very good, improve the working efficiency of gas compressor.
2, the impeller after improving, when pressurized machine assembles, only needs to revise a little pressurized machine back of the body dish adjacent with it, is convenient to produce, and reduces cost.
Below in conjunction with the drawings and specific embodiments, detailed construction of the present utility model is further described.
Accompanying drawing explanation
Accompanying drawing 1 is traditional radial-flow impeller structural representation;
Accompanying drawing 2 is the A-A sectional view in accompanying drawing 1;
Accompanying drawing 3 is structural representation of the present utility model;
Accompanying drawing 4 is the B-B sectional view in accompanying drawing 3;
Accompanying drawing 5 is the I portion enlarged view in accompanying drawing 4.
Embodiment
The turbo-charger blower impeller that a kind of runoff and oblique flow combine, comprise wheel hub 1, five linear leafs 2 and five short blades 3, linear leaf 2 and cross-shaped being evenly distributed on of short blade 3 are drawn together on wheel hub 1, the structure that the flow outlet top of linear leaf 2 and the flow outlet top of short blade 3 adopt runoff and oblique flow to combine, the hypotenuse 2-2 of linear leaf 2 oblique flow outlet and the hypotenuse 3-2 of short blade 3 oblique flow outlet and the axis angle a of wheel hub 1 is all 30 °, the sideline 2-3 of linear leaf 2 footpath outflow opening and the sideline 3-3 of short blade 3 footpath outflow opening and the axis being parallel of wheel hub 1, the intersection that oblique flow outlet hypotenuse and runoff export sideline adopts arc transition, concentrate to reduce intersection stress, the wheel disc outside diameter of wheel hub 1 is consistent with the excircle configuration diameter of footpath outflow opening.
Claims (1)
1. the turbo-charger blower impeller that combines of a runoff and oblique flow, comprise wheel hub, four ~ six linear leafs and four ~ six short blades, linear leaf is the same with short blade quantity, linear leaf and cross-shaped being evenly distributed on of short blade are drawn together on wheel hub, it is characterized in that: the structure that the flow outlet top of linear leaf and the flow outlet top of short blade adopt runoff and oblique flow to combine, the axis angle a of the hypotenuse that the hypotenuse of linear leaf oblique flow outlet and short blade oblique flow export and wheel hub is all 15 ° ~ 70 °, the sideline of linear leaf footpath outflow opening and the sideline of short blade footpath outflow opening and the axis being parallel of wheel hub, the intersection that oblique flow outlet hypotenuse and runoff export sideline adopts arc transition, concentrate to reduce intersection stress, the wheel disc outside diameter of wheel hub is consistent with the excircle configuration diameter of footpath outflow opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420632713.5U CN204200671U (en) | 2014-10-29 | 2014-10-29 | The turbo-charger blower impeller that runoff and oblique flow combine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420632713.5U CN204200671U (en) | 2014-10-29 | 2014-10-29 | The turbo-charger blower impeller that runoff and oblique flow combine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204200671U true CN204200671U (en) | 2015-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420632713.5U Active CN204200671U (en) | 2014-10-29 | 2014-10-29 | The turbo-charger blower impeller that runoff and oblique flow combine |
Country Status (1)
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| CN (1) | CN204200671U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321508A (en) * | 2016-10-28 | 2017-01-11 | 广东威灵电机制造有限公司 | Mixed flow impeller, mixed flow fan and vacuum cleaner |
-
2014
- 2014-10-29 CN CN201420632713.5U patent/CN204200671U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321508A (en) * | 2016-10-28 | 2017-01-11 | 广东威灵电机制造有限公司 | Mixed flow impeller, mixed flow fan and vacuum cleaner |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |