CN204200678U - There is the diagonal impeller of compressor reducing the axial load of turbosupercharger - Google Patents
There is the diagonal impeller of compressor reducing the axial load of turbosupercharger Download PDFInfo
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- CN204200678U CN204200678U CN201420632900.3U CN201420632900U CN204200678U CN 204200678 U CN204200678 U CN 204200678U CN 201420632900 U CN201420632900 U CN 201420632900U CN 204200678 U CN204200678 U CN 204200678U
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- flow outlet
- outlet top
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Abstract
A kind of have the diagonal impeller of compressor reducing the axial load of turbosupercharger, comprise wheel hub, five ~ seven linear leafs and five ~ seven 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, linear leaf flow outlet top and short blade flow outlet top are inclined-plane, it is 15 ~ 35 ° with the inclination angle a of axle centre, the blade tip excircle configuration diameter at linear leaf flow outlet top and short blade flow outlet top is all D2, the blade root excircle configuration diameter at linear leaf flow outlet top and short blade flow outlet top is all D3, the blade root at linear leaf flow outlet top and short blade flow outlet top is crossing with the wheel disc circle end face of wheel hub.
Description
Technical field
The utility model relates to turbosupercharger and to calm the anger technical field, particularly a kind of turbo-charger blower 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.
Existing compressor 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 the quantity of short blade 3, linear leaf 2 and cross-shaped being evenly distributed on of short blade 3 are drawn together on wheel hub 1, the excircle configuration diameter of linear leaf 2 flow outlet top 2-1 and the excircle configuration diameter of short blade 3 flow outlet top 3-1 are all D2, and D2 is less than the wheel diameter D1 of wheel hub 1.Along with turbosupercharger is to high rotating speed, high pressure ratio future development, whole turbocharger bearing system undergos acid test, compressor pressure ratio raises, result in the thrust load increase being pointed to pressure side by turbosupercharger whirlpool end, the thrust load of impeller mainly refers to that compressor inlet is to the pressure P 2 in the pressure P 1 of impeller leading faces and impeller wheel back of the body gap, air compressor wheel carries on the back gap internal pressure P2 when pressurized machine runs well all higher than inlet pressure P1, when the thrust load that impeller wheel back of the body gap internal pressure P2 produces exceeds the limit that thrust bearing can bear, turbine rotor system and thrust bearing directly contact and dry grind, under high rotating speed effect, thrust bearing very quick-wearing lost efficacy, there is burning machine in turbosupercharger.At turbosupercharger industry field, mainly start with from two aspects for overcoming thrust load increase, one is by designing new axial bearing surface structure, increase the bearing capacity of oil film, the thrust load numerical value that thrust bearing be can bear increases, this solution can not reduce the thrust load of the compressor impeller wheel back of the body, and when the thrust load of the impeller wheel back of the body is excessive, turbine rotor system and thrust bearing still can produce directly to contact and dry grind; Two is that reach the object indirectly reducing thrust load, but consequent problem is, after increasing turbine box runner, the low-speed performance of motor can be a greater impact, and lays particular emphasis on low-speed performance disagree with present engine by increasing turbine box runner A/R value.
Summary of the invention
The purpose of this utility model be overcome prior art above-mentioned deficiency and provide a kind of there is the compressor impeller reducing pressurized machine axial force.
The technical solution of the utility model is: a kind of have the diagonal impeller of compressor reducing the axial load of turbosupercharger, comprise wheel hub, five ~ seven linear leafs and five ~ seven 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, linear leaf flow outlet top and short blade flow outlet top are inclined-plane, it is 15 ~ 35 ° with the inclination angle a of axle centre, the blade tip excircle configuration diameter at linear leaf flow outlet top and short blade flow outlet top is all D2, the blade root excircle configuration diameter at linear leaf flow outlet top and short blade flow outlet top is all D3, the blade root at linear leaf flow outlet top and short blade flow outlet top is crossing with the wheel disc circle end face of wheel hub.
The utility model compared with prior art has following features:
1, under the prerequisite keeping former supercharger air compressor performance, change former radial-flow impeller into diagonal impeller, and reduce to act on the load at the impeller wheel back side by reducing wheel disc area, reduce and take turns sensing impeller leading faces direction, back side load by impeller, reduce the bearing capacity of thrust bearing whirlpool end face, effectively improve the operation conditions of turbosupercharger.
2, the impeller after improving, directly can add at prophyll machine on blank of taking turns, not need die sinking again, be convenient to produce, reduce 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 existing gas compressor radial-flow impeller structural representation;
Accompanying drawing 2 is the A-A sectional view in accompanying drawing 1;
The diagonal impeller of compressor structural representation that accompanying drawing 3 provides for the utility model;
Accompanying drawing 4 is the B-B sectional view in accompanying drawing 1.
Embodiment
A kind of have the diagonal impeller of compressor reducing the axial load of turbosupercharger, comprise wheel hub 1, seven linear leafs 2 and seven short blades 3, linear leaf 2 and cross-shaped being evenly distributed on of short blade 3 are drawn together on wheel hub 1, linear leaf 2 flow outlet top 2-1 and short blade 3 flow outlet top 3-1 is inclined-plane, it is 15 ~ 35 ° with the inclination angle a of axle centre, the blade tip excircle configuration diameter of linear leaf 2 flow outlet top 2-1 and short blade 3 flow outlet top 3-1 is all D2, the blade root excircle configuration diameter of linear leaf 2 flow outlet top 2-1 and short blade 3 flow outlet top 3-1 is all D3, the blade root of linear leaf 2 flow outlet top 2-1 and short blade 3 flow outlet top 3-1 is crossing with the wheel disc circle end face of wheel hub 1.
Owing to acting on the thrust load of impeller primarily of compressor inlet impeller leading faces pressure P 1, pressure P 2 in impeller wheel back of the body gap and the area of contact of gas and impeller determine, and compressor impeller wheel carries on the back gap internal pressure P2 when pressurized machine runs well all higher than inlet pressure P1, when after the long-pending reduction in the impeller wheel back side, act on impeller wheel back surface load fall and will be greater than the amplitude acting on impeller front surface load and decline, cause taking turns the back of the body by impeller thus and point to the load reduction of impeller leading faces direction, along with the rising of rotating speed, loading force on diagonal impeller reduces more obvious, reduce the loading force that thrust bearing bears, effectively improve the operation conditions of turbosupercharger.
Claims (1)
1. one kind has the diagonal impeller of compressor reducing the axial load of turbosupercharger, comprise wheel hub, five ~ seven linear leafs and five ~ seven 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: linear leaf flow outlet top and short blade flow outlet top are inclined-plane, it is 15 ~ 35 ° with the inclination angle a of axle centre, the blade tip excircle configuration diameter at linear leaf flow outlet top and short blade flow outlet top is all D2, the blade root excircle configuration diameter at linear leaf flow outlet top and short blade flow outlet top is all D3, the blade root at linear leaf flow outlet top and short blade flow outlet top is crossing with the wheel disc circle end face of wheel hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420632900.3U CN204200678U (en) | 2014-10-29 | 2014-10-29 | There is the diagonal impeller of compressor reducing the axial load of turbosupercharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420632900.3U CN204200678U (en) | 2014-10-29 | 2014-10-29 | There is the diagonal impeller of compressor reducing the axial load of turbosupercharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204200678U true CN204200678U (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420632900.3U Active CN204200678U (en) | 2014-10-29 | 2014-10-29 | There is the diagonal impeller of compressor reducing the axial load of turbosupercharger |
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| CN (1) | CN204200678U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314864A (en) * | 2014-10-29 | 2015-01-28 | 湖南天雁机械有限责任公司 | Gas compressor oblique flow impeller with function of reducing axial load of turbocharger |
-
2014
- 2014-10-29 CN CN201420632900.3U patent/CN204200678U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314864A (en) * | 2014-10-29 | 2015-01-28 | 湖南天雁机械有限责任公司 | Gas compressor oblique flow impeller with function of reducing axial load of turbocharger |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |