CN207554415U - A kind of compressor impeller for aero-engine - Google Patents
A kind of compressor impeller for aero-engine Download PDFInfo
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- CN207554415U CN207554415U CN201721641970.5U CN201721641970U CN207554415U CN 207554415 U CN207554415 U CN 207554415U CN 201721641970 U CN201721641970 U CN 201721641970U CN 207554415 U CN207554415 U CN 207554415U
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- wheel hub
- blade
- compressor impeller
- impeller according
- crafters
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Abstract
The utility model discloses a kind of compressor impellers for aero-engine, its multiple blade (2) for including wheel hub (1) and being set on wheel hub (1), the wheel hub (1) include the wheel hub surface (13) of hub top (11), wheel hub bottom (12) and connection hub top (11) and wheel hub bottom (12)；The blade (2) and wheel hub surface (13) joint, form root of blade (2 '), and the root of blade (2 ') is chamfered transition with wheel hub surface (13) joint；Multiple interconnected crafters (14) are offered in the lower section of wheel hub surface (13), along the curved surface direction of wheel hub surface (13).The compressor impeller is made using 3D printing, is integrally formed, also, under the premise of use intensity is ensured, successfully realize novel complex structure.
Description
Technical field
The utility model belongs to aero-engine field, is related to the compressor impeller for aero-engine.
Background technology
Compressor impeller for aero-engine is one of core component of engine, with engine performance requirement
It improves, the shape of integral wheel is also more complicated, specially：Blade is thin, and distortion is big, and impeller clearance is small.But this but gives entirety
The processing of blade brings great difficulty.
Most of impeller is made of aluminum alloy forged rear heat treatment, and still, this processing method is more difficult to meet knot
The novel impeller of structure complexity, be easy to cause part deformation and mismachining tolerance is very big.
And for complicated novel impeller, optimal selection during 3D printing still, is also not disclosed 3D and beats in the prior art
The compressor impeller of print.
Utility model content
In order to overcome the above problem, present inventor has performed sharp study, using 3D printing technique obtain a kind of one into
The compressor impeller of type, wherein, it is described including wheel hub 1 and the multiple blades 2 being set on wheel hub 1 in the compressor impeller
Wheel hub 1 includes hub top 11, wheel hub bottom 12 and connection hub top 11 and the wheel hub surface 13 of wheel hub bottom 12, in wheel hub surface
13 lower section offers multiple crafters 14, also, multiple ladders are provided on wheel hub bottom 121 close to 2 ' place of root of blade
Shape protrusion 122 is new so as to complete this practicality for being combined with carrying out buckle across other aerial motor spare parts of wheel hub
Type.
The utility model provides a kind of compressor impeller for aero-engine, is embodied in following：
(1) a kind of compressor impeller for aero-engine, wherein, the compressor impeller includes wheel hub 1 and setting
In multiple blades 2 on wheel hub 1, wherein,
The wheel hub 1 includes hub top 11, wheel hub bottom 12 and connection hub top 11 and the wheel hub of wheel hub bottom 12
Face 13；
The blade 2 and 13 joint of wheel hub surface, form root of blade 2 ', and the root of blade 2 ' connects with wheel hub surface 13
Locate as chamfered transition；
Multiple interconnected crafters 14 are offered in the lower section of wheel hub surface 13, along the curved surface direction of wheel hub surface 13.
(2) compressor impeller according to above-mentioned (1), wherein,
Offer the axle center hole 10 of cylindricality at the axle center of wheel hub 1, the axle center hole 10 be used for aero-engine its
Its parts connects；And/or
The wheel hub surface 13 is rounded with the section at axis perpendicular direction, from hub top 11 to wheel hub bottom 12,
The circular radius gradually increases.
(3) compressor impeller according to above-mentioned (1), wherein, the radius of hub top 11 and the half of wheel hub bottom 12
The ratio between diameter is 1:(3~6)；And/or
The ratio between the radius of the hub top 11 and the height of wheel hub 1 are 1:(2~5).
(4) compressor impeller according to above-mentioned (1), wherein,
The multiple blade 22 is in class triangular structure；
The free end of the multiple blade 2 extends to away from the direction of wheel hub surface 13；
The free end of the multiple blade 2 is bent along the same circumferential direction of wheel hub 1.
(5) compressor impeller according to above-mentioned (1), wherein, the blade 2 includes primary blades 21 and splitterr vanes
22, wherein,
The primary blades 21 and splitterr vanes 22 are respectively set on wheel hub surface 13 each other；And/or
The area of the primary blades 21 is more than splitterr vanes 22；And/or
The primary blades 21 and splitterr vanes 22 are aligned at the circumferential edge of wheel hub bottom 12.
(6) compressor impeller according to above-mentioned (1), wherein,
The multiple crafters 14 is homogeneous intercommunicated in the curved surface direction along circumferential direction with wheel hub surface, also, in week
To direction, adjacent bubbles hole is connected to form annular；And/or
Since hub top 11, the aperture of the crafters 14 gradually increases, when close to wheel hub bottom 12, the gas
The aperture of abscess 14 is gradually reduced.
(7) compressor impeller according to one of above-mentioned (1) to (6), wherein,
Multiple through-holes 111 are offered on hub top 11, the through-hole 111 is connected with crafters 14；And/or
Bar shaped counterbore 15 is offered in root of blade 2 '.
(8) compressor impeller according to above-mentioned (7), wherein, wheel hub bottom 12,10 periphery of axis hole are provided with round platform
Connected in star 121, in the inside of round platform connected in star 121,10 edge of axis hole trapezoidal raised 122.
(9) compressor impeller according to above-mentioned (8), wherein, in wheel hub bottom 12, it is radially away from round platform connected in star
Multiple polygonal grooves 123 are provided at 121, the multiple polygonal grooves 123 are uniformly distributed along the circumferential direction of wheel hub.
(10) compressor impeller according to above-mentioned (9), wherein, at recessed 123, polygon and 12 edge of wheel hub bottom
Between, multiple bar-shaped troughs 124 are offered, the multiple bar-shaped trough 124 has along the circumferential direction of wheel hub bottom 12, in centrifugation shape
Sequence arranges.
Description of the drawings
Fig. 1 shows the main structure diagram of compressor impeller described in the utility model；
Fig. 2 shows A-A in Fig. 1 to schematic cross-section；
Fig. 3 shows the schematic cross-section of B-B direction in Fig. 2；
Fig. 4 shows the overlooking the structure diagram of Fig. 1；
Fig. 5 shows the partial enlarged view of Fig. 4.
Drawing reference numeral explanation：
1- wheel hubs, 10- axle center holes, 11- hub tops, 111- through-holes, 12- wheel hubs bottom, 121- round platform connected in stars, 122-
Trapezoidal protrusion, 123- polygonal grooves, 124- strip grooves, 13- wheel hub surfaces, 14- crafters；15- bar shaped counterbores；2- blades,
2 '-root of blade, 21- primary blades, 22- splitterr vanes.
Specific embodiment
The utility model is further described below by drawings and embodiments.Pass through these explanations, this practicality
The characteristics of novel and advantage will become more apparent from clearly.Wherein, although the various aspects of embodiment are shown in the drawings,
But unless otherwise indicated, it is not necessary to attached drawing drawn to scale.
The utility model provides a kind of compressor impeller for aero-engine, as shown in Fig. 1~2, including wheel
Hub 1 and the multiple blades 2 being set on wheel hub 1, wherein, the axle center hole 10 of cylindricality, the axis are offered at the axle center of wheel hub 1
Heart hole 10 for being connect with other parts of aero-engine, such as with turbine axis connection.
According to a kind of preferred embodiment of the utility model, as shown in Fig. 2, the wheel hub 1 includes hub top 11, wheel
Hub bottom 12 and connection hub top 11 and the wheel hub surface 13 of wheel hub bottom 12.
In further preferred embodiment, the wheel hub surface 13 is rounded with the section at axis perpendicular direction.
In embodiment still more preferably, from hub top 11 to wheel hub bottom 12, the circular radius by
It is cumulative big.
Wherein, the axle center refers to the symmetry axis of the wheel hub.The blade 1 is set on wheel hub surface 13.
From the foregoing, it will be observed that the wheel hub surface is radius gradually increased curved surface, in this way, can be by the air-flow flowed through by axially changing
It changes to radially.
According to a kind of preferred embodiment of the utility model, the radius of hub top 11 and the radius of wheel hub bottom 12 it
Than being 1:(3~6), preferably 1:(4~5).
In further preferred embodiment, the ratio between the radius of the hub top 11 and the height of wheel hub 1 are 1:(2
~5), preferably 1:(3~4).
According to a kind of preferred embodiment of the utility model, as shown in Figure 1, the multiple blade 22 is in class triangle
Structure.
In further preferred embodiment, as shown in Figure 1, the base of the class triangular structure and 13 phase of wheel hub surface
It connects, forms the root of blade 2, i.e. root of blade 2 '.
In embodiment still more preferably, the root of blade 2 ' is chamfered transition with 13 joint of wheel hub surface.
According to a kind of preferred embodiment of the utility model, as shown in Figure 1, the free end of the multiple blade 2 to
Extend away from the direction of wheel hub surface 13.
In further preferred embodiment, as shown in Figure 1, the free end of the multiple blade 2 is along the same of wheel hub 1
One circumferential direction is bent.
In embodiment still more preferably, as shown in Figure 1, the free end of the multiple blade 2 is along wheel hub 1
Counterclockwise, same circumferential skewing.
According to a kind of preferred embodiment of the utility model, as shown in Figure 1, the blade 2 includes primary blades 21 and divides
Flow blade 22.
In further preferred embodiment, as shown in Figure 1, the primary blades 21 and splitterr vanes 22 are each other respectively
It is set on wheel hub surface 13.
In embodiment still more preferably, as shown in Figure 1, the area of the primary blades 21 is more than splitterr vanes
22。
Wherein, primary blades 21 are the equal of linear leaf, and splitterr vanes 22 are equivalent to short blade, in this way, linear leaf and short leaf
Piece arranged for interval can be effectively improved the distribution of impeller flow field, improve impeller pressure ratio, improve stable on wheel hub surface 13
Property.Meanwhile blade is also prevented from air-flow separation respectively for setting, reduces noise.
According to a kind of preferred embodiment of the utility model, as shown in Figure 1, the primary blades 21 and splitterr vanes 22 exist
It is aligned at the circumferential edge of wheel hub bottom 12.
In further preferred embodiment, as shown in Figure 1, the bending degree of the primary blades 21 is more than the shunting
The bending degree of blade 22.
According to a kind of preferred embodiment of the utility model, as shown in Fig. 2, in the lower section of wheel hub surface 13, along wheel hub surface
13 curved surface direction offers multiple interconnected crafters 14.
In further preferred embodiment, as shown in figures 2-3, the multiple crafters 14 along circumferential direction and
It is homogeneous intercommunicated in the curved surface direction of wheel hub surface, also, in circumferential direction, adjacent bubbles hole is connected to form annular.
In embodiment still more preferably, as shown in Fig. 2, since the hub top 11, the crafters 14
Aperture gradually increases, and when close to wheel hub bottom 12, the aperture of the crafters 14 is gradually reduced.
Wherein, the multiple crafters is continuously disposed in the lower section of wheel hub surface 13, in this way, internal crafters can cause
Impeller loss of weight reduces centrifugal force, improves energy transformation ratio.
According to a kind of preferred embodiment of the utility model, as shown in Fig. 1~2, offered on hub top 11 more
A through-hole 111, such as two.
In further preferred embodiment, the through-hole 111 is connected with crafters 14.
Wherein, through-hole 111 can be one or multiple, such as 2, wherein, due to inside setting crafters that
It is interconnected between this, therefore, as long as it is identical with wherein one or more crafters to offer through-hole 111 in hub top, i.e.,
Whole connection can be achieved.In this way, after 3D printing machines, internal (in crafters) metal can be removed by through-hole 111
Powder.
According to a kind of preferred embodiment of the utility model, as shown in Figures 1 to 3, item is offered in root of blade 2 '
Shape counterbore 15.
Wherein, the bar shaped counterbore 15 is not connected with internal crafters 14, and bar shaped counterbore 15 is opened up in root of blade
Effect is out to improve vane stress situation, reduces blade stress concentration in high speed rotation, improve fatigue life.
According to a kind of preferred embodiment of the utility model, as shown in Figures 4 and 5, on wheel hub bottom 12,10 periphery of axis hole
It is provided with round platform connected in star 121.
In further preferred embodiment, as shown in Figures 4 and 5, on the inside of round platform connected in star 121,10 side of axis hole
Trapezoidal raised 122 at edge.
Wherein, it described trapezoidal raised 122 is used to be combined with carrying out buckle across the turbine rod of axis hole 10.
According to a kind of preferred embodiment of the utility model, as shown in Figures 4 and 5, in wheel hub bottom 12, it is radially away from
Multiple polygonal grooves 123, such as rectangular recess are provided at round platform connected in star 121.
In further preferred embodiment, as shown in Figures 4 and 5, week of the multiple polygonal grooves 123 along wheel hub
It is uniformly distributed to direction.
Wherein, it is used when the polygonal grooves 123 load and unload for compressor impeller with turbine rod, wherein, due to turbine
Bar passes through axis hole 10 and is buckled with trapezoidal raised 122, for the ease of the dismounting between impeller and worm-wheel shaft, sets polygonal grooves
123, as dismounting fulcrum.
According to a kind of preferred embodiment of the utility model, as shown in Figures 4 and 5, at recessed 123, polygon and wheel hub bottom
Between 12 edge of portion, multiple bar-shaped troughs 124 are offered.
In further preferred embodiment, as shown in Figures 4 and 5, the multiple bar-shaped trough 124 is along wheel hub bottom 12
Circumferential direction, in centrifugation shape ordered arrangement.
Wherein, the strip groove be as compensating groove, wherein, impeller is acted in high speed rotation by air-flow, production
Raw axial force, overleaf opens up compensating groove, can reduce axially loaded, and in compressor impeller bar shaped groove face and radial diffuser
Bottom surface generates air gap, makes to be in discrete state in compressor impeller high speed rotation with radial diffuser bottom surface, reduces frictional force.
Advantageous effect includes possessed by the utility model：
(1) compressor impeller is made using 3D printing, is integrally formed；
(2) compressor impeller successfully realizes novel complex structure under the premise of use intensity is ensured.
In the description of the present invention, it should be noted that term the instructions such as " on ", " under " " interior " orientation or position
Relationship is for only for ease of description the utility model and simplifies description rather than instruction or imply that signified device or element are necessary
With specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.
The utility model is illustrated above in association with preferred embodiment, but these embodiments are only models
Example property, only play the role of illustrative.On this basis, a variety of replacements and improvement can be carried out to the utility model, these
It each falls in the scope of protection of the utility model.
Claims (10)
1. a kind of compressor impeller for aero-engine, which is characterized in that the compressor impeller includes wheel hub (1) and sets
The multiple blades (2) being placed on wheel hub (1), wherein,
The wheel hub (1) includes hub top (11), wheel hub bottom (12) and connection hub top (11) and wheel hub bottom (12)
Wheel hub surface (13)；
The blade (2) and wheel hub surface (13) joint, form root of blade (2 '), the root of blade (2 ') and wheel hub surface
(13) joint is chamfered transition；
Multiple interconnected crafters (14) are offered in the lower section of wheel hub surface (13), along the curved surface direction of wheel hub surface (13).
2. compressor impeller according to claim 1, which is characterized in that
Offer the axle center hole (10) of cylindricality at the axle center of wheel hub (1), the axle center hole (10) for aero-engine
Other parts connections；And/or
The wheel hub surface (13) is rounded with the section at axis perpendicular direction, from hub top (11) to wheel hub bottom
(12), the circular radius gradually increases.
3. compressor impeller according to claim 1, which is characterized in that the radius of hub top (11) and wheel hub bottom
(12) the ratio between radius is 1:(3~6)；And/or
The ratio between the radius of the hub top (11) and the height of wheel hub (1) are 1:(2~5).
4. compressor impeller according to claim 1, which is characterized in that
The multiple blade (22) is in class triangular structure；
The free end of the multiple blade (2) extends to away from the direction of wheel hub surface (13)；
The free end of the multiple blade (2) is bent along the same circumferential direction of wheel hub (1).
5. compressor impeller according to claim 1, which is characterized in that the blade (2) is including primary blades (21) and divides
Blade (22) is flowed, wherein,
The primary blades (21) and splitterr vanes (22) are respectively set to each other on wheel hub surface (13)；And/or
The area of the primary blades (21) is more than splitterr vanes (22)；And/or
The primary blades (21) and splitterr vanes (22) are aligned at the circumferential edge of wheel hub bottom (12).
6. compressor impeller according to claim 1, which is characterized in that
The multiple crafters (14) is homogeneous intercommunicated in the curved surface direction along circumferential direction with wheel hub surface, also, in circumferential direction
Direction, adjacent bubbles hole are connected to form annular；And/or
Since hub top (11), the aperture of the crafters (14) gradually increases, described when close to wheel hub bottom (12)
The aperture of crafters (14) is gradually reduced.
7. the compressor impeller according to one of claim 1 to 6, which is characterized in that
Multiple through-holes (111) are offered on hub top (11), the through-hole (111) connects with crafters (14)；And/or
Bar shaped counterbore (15) is offered in root of blade (2 ').
8. compressor impeller according to claim 7, which is characterized in that set on wheel hub bottom (12), axis hole (10) periphery
Round platform connected in star (121) is equipped with, it is trapezoidal raised (122) in the inside of round platform connected in star (121), axis hole (10) edge.
9. compressor impeller according to claim 8, which is characterized in that in wheel hub bottom (12), be radially away from round platform
It is provided with multiple polygonal grooves (123) at connected in star (121), the multiple polygonal grooves (123) are along the circumferential direction side of wheel hub
To being uniformly distributed.
10. compressor impeller according to claim 9, which is characterized in that in polygonal grooves (123) and wheel hub bottom
(12) between edge, multiple bar-shaped troughs (124), circumferential direction of the multiple bar-shaped trough (124) along wheel hub bottom (12) are offered
Direction, in centrifugation shape ordered arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721641970.5U CN207554415U (en) | 2017-11-30 | 2017-11-30 | A kind of compressor impeller for aero-engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721641970.5U CN207554415U (en) | 2017-11-30 | 2017-11-30 | A kind of compressor impeller for aero-engine |
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| Publication Number | Publication Date |
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| CN207554415U true CN207554415U (en) | 2018-06-29 |
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| CN201721641970.5U Active CN207554415U (en) | 2017-11-30 | 2017-11-30 | A kind of compressor impeller for aero-engine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108952949A (en) * | 2018-07-05 | 2018-12-07 | 常州平江电气设备有限公司 | A kind of turbocharger that gas fluidity is good |
| TWI681112B (en) * | 2018-12-14 | 2020-01-01 | 國家中山科學研究院 | Method for increasing the operating area of turbocharger |
| KR102188930B1 (en) * | 2019-09-17 | 2020-12-09 | 한국항공우주연구원 | Rotor body of turbomachine and its manufacturing method |
| CN113685370A (en) * | 2021-09-24 | 2021-11-23 | 李媛 | High negative pressure steam compressor and impeller |
| CN113944653A (en) * | 2020-07-15 | 2022-01-18 | 株式会社丰田自动织机 | Centrifugal compressor |
-
2017
- 2017-11-30 CN CN201721641970.5U patent/CN207554415U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108952949A (en) * | 2018-07-05 | 2018-12-07 | 常州平江电气设备有限公司 | A kind of turbocharger that gas fluidity is good |
| CN108952949B (en) * | 2018-07-05 | 2020-12-22 | 常州平江电气设备有限公司 | Turbocharger with good gas fluidity |
| TWI681112B (en) * | 2018-12-14 | 2020-01-01 | 國家中山科學研究院 | Method for increasing the operating area of turbocharger |
| KR102188930B1 (en) * | 2019-09-17 | 2020-12-09 | 한국항공우주연구원 | Rotor body of turbomachine and its manufacturing method |
| CN113944653A (en) * | 2020-07-15 | 2022-01-18 | 株式会社丰田自动织机 | Centrifugal compressor |
| CN113944653B (en) * | 2020-07-15 | 2023-06-13 | 株式会社丰田自动织机 | Centrifugal compressor |
| CN113685370A (en) * | 2021-09-24 | 2021-11-23 | 李媛 | High negative pressure steam compressor and impeller |
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