CN202441647U - Impeller and centrifugal compressor comprising same - Google Patents
Impeller and centrifugal compressor comprising same Download PDFInfo
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- CN202441647U CN202441647U CN2012200572613U CN201220057261U CN202441647U CN 202441647 U CN202441647 U CN 202441647U CN 2012200572613 U CN2012200572613 U CN 2012200572613U CN 201220057261 U CN201220057261 U CN 201220057261U CN 202441647 U CN202441647 U CN 202441647U
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Abstract
The utility model provides an impeller and a centrifugal compressor comprising the same, wherein the impeller comprises a hub and blades, wherein the surface of each blade is provided with a blade curve surface, control lines on the blades are combined to form shapes of the blade curve surfaces, and on the blade curve surfaces, control lines on at least one part of surface area are curves. According to the impeller and the centrifugal compressor comprising the same, through an impeller three-dimensional design, the shape of the control lines of the blades of the impeller is changed into a curve from a straight line, so that the middles of the blades of the centrifugal impeller have a certain flexibility, impact and separation loss of an impeller inlet are reduced or eliminated, a fluid flowing structure inside the impeller is improved, the efficiency of the impeller is increased, the range of an efficient region is broadened, and the surge flow is lowered.
Description
Technical field
The utility model relates to field of fluid machinery, in particular to a kind of impeller and comprise the centrifugal compressor of this impeller.
Background technique
Impeller plays the gas acting as movement parts most crucial in the centrifugal compressor, makes gas obtain the effect of energy, thereby reaches the purpose of pressurized gas, and therefore, the quality of impeller design plays decisive role to centrifugal compressor performance.Because the quality of impeller performance is mainly reflected on its aeroperformance, thereby the design of impeller inner flow passage is particularly crucial.
Wherein, the aeroperformance of impeller is mainly reflected in following two aspects:
One, impeller is delivered to the useful horsepower of fluid with air horsepower, that is, and and impeller adiabatic efficiency.The loss of impeller self-energy is made up of many-sided factor, and wherein most critical is also the most insoluble is how to design impeller channel, thereby avoids the generation of losses such as gas shock loss, separation losses, secondary flow loss, tail loss;
Two, impeller stable operation range.Centrifugal compressor has the characteristic of surge, is reduced to a certain degree when regulating flow, and surge will take place compressor, and this is totally unfavorable for centrifugal compressor, must avoid the generation of surging phenomenon in the normal course of operation.Therefore to widen the impeller stable operation range as far as possible through the impeller channel pneumatic design, reduce the surge flow.
The Centrufugal compressor impeller that uses at present is the ruled surface impeller, and as shown in Figure 1, the characteristics of ruled surface impeller are the distortions with circumferential and axial, and spoon of blade is only by confirming with wheel cap effluent line 13 with wheel hub and the crossing hub side streamline 12 of wheel cap respectively.Blade guide line 11 is straightway, and spoon of blade does not obtain by there being several straightway combinations.
Because fluid its streamline in the actual flow process must be three-dimensional, ruled surface impeller blade guide line 11 produces separation losses owing to adopt the straight line molded lines to have flow separation in positions such as blade imports usually, makes impeller adiabatic efficiency further to be promoted.
The model utility content
The utility model aims to provide a kind of impeller and comprises the centrifugal compressor of this impeller, has flow separation to solve impeller of the prior art in positions such as blade imports, produces separation losses, makes the technical problem that impeller adiabatic efficiency can't further be promoted.
To achieve these goals, an aspect according to the utility model provides a kind of impeller, comprising: wheel hub; Blade, the surface is a spoon of blade, and the guide line on the blade is combined to form the shape of spoon of blade, and wherein, on spoon of blade, the guide line at least a portion surface area is a curve.
Further; Also comprise wheel cap; Blade is positioned at the hub side streamline of the end line formation blade of wheel hub one side; Blade is positioned at the wheel cap effluent line of the end line formation blade of wheel cap one side, has one or more center line of flow path between hub side streamline and the wheel cap effluent line, and guide line is confirmed through least square fitting by hub side streamline, wheel cap effluent line and center line of flow path.
Further, blade is by the spill of pressure side to the suction surface depression.
Further, guide line comprises import barrier line and control of export line, and the import barrier curvature of a curve is greater than the control of export curvature of a curve.
Further, the curvature of spoon of blade reduces from import barrier line to control of export line successively.
Further, import barrier curvature of a curve is the twice of control of export line.
Further, the curvature of spoon of blade raises earlier from import barrier line to control of export line and reduces.
Further, have at least one straightway on the guide line, straightway constitutes the conventional zone on the spoon of blade, rounding off between the adjacent area on conventional zone and the spoon of blade.
Further, guide line has two straightways and a curved section between two straightways.
Further, curved section is circular arc or parabola shaped.
Further, each guide line all is parabola shaped.
According to the utility model on the other hand, a kind of centrifugal compressor is provided, has had impeller, wherein, impeller is above-mentioned impeller.
The impeller of the utility model and comprising in the centrifugal compressor of this impeller; Through the impeller three dimensional design; Change the form of impeller blade guide line into curvilinerar figure from lineal shape, make the middle part of centrifugal impeller blade present certain tortuosity, and then reduce or eliminated the impact and the separation losses of impeller inlet; Improved impeller fluid flow inside structure, improved impeller adiabatic efficiency further, widened efficient district scope and reduced the surge flow.
Description of drawings
The Figure of description that constitutes the application's a part is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 a shows the plan view of impeller blade of the prior art;
Fig. 1 b shows the plan view of impeller blade of the prior art;
Fig. 2 shows the perspective view of the impeller of the utility model;
Fig. 3 shows the side view of the blade wheel structure of the utility model; And
Fig. 4 shows the structural representation of the impeller blade of the utility model.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the utility model.
As shown in Figures 2 and 3, the impeller that the utility model provides comprises: blade 21 and the wheel hub 22 that links to each other with a side of blade 21; Wherein, The surface of blade 21 is a spoon of blade, has guide line 211 (as shown in Figure 4) on the spoon of blade, and guide line 211 is combined to form spoon of blade; Wherein, guide line 211 is a curve.Preferably, the utility model also comprises the wheel cap 23 near the opposite side of blade 21.
The utility model is accomplished from the function of rotating shaft to the impeller carry-over moment by the structure of wheel hub 22 in use, and impeller with the rotation of rotating shaft synchronous high-speed, to the wherein air-flow acting of runner of flowing through, is realized the compression function to air-flow under this moment loading.
The impeller of the utility model passes through three dimensional design; Change the form of the guide line 211 of impeller blade 21 into curvilinerar figure from lineal shape; Make centrifugal impeller blade 21 middle parts present certain tortuosity; And then reduce or eliminated the impact and the separation losses of impeller inlet, and improved impeller fluid flow inside structure, improve impeller adiabatic efficiency further, widened efficient district scope and reduced the surge flow.
In order to make blade 21 shapes in the utility model regular more; Improve impeller fluid flow inside structure further; Improve impeller adiabatic efficiency, as shown in Figure 4, the impeller blade 21 in the utility model is three-dimensional twisted blade; Wherein, Spoon of blade comprises the hub side streamline 212 that intersects with wheel hub 22, near the wheel cap effluent line 213 of wheel cap 23 1 ends, an and center line of flow path 214 between hub side streamline 212 and wheel cap effluent line 213 (can adopt the bar number of more center line of flow path according to actual spoon of blade shape), guide line 211 is definite through least square fitting by hub side streamline 212, wheel cap effluent line 213 and center line of flow path 214.
Its blade 21 of impeller in the utility model is compared the center line of flow path 214 that has increased in the middle of impeller blade 21 with ruled surface impeller blade of the prior art.Guide line 211 presents curvilinerar figure, and guide line 211 can be obtained through method of least squares (or other curve-fitting methods) match by the intersection point with each streamline, and spoon of blade can be obtained by guide line 211 combinations.
As a kind of preferred version, in the impeller of the utility model, blade 21 is by the spill of pressure side to suction surface depression, for example, and by there not being the spoon of blade that several are the spill that circular arc or parabola shaped guide line 211 form.
As a kind of preferred version; In the impeller of the utility model; Spoon of blade comprises import barrier line 21a and control of export line 21b; Wherein, import barrier line 21a be on the spoon of blade near the guide line of the blade tip of impeller inlet end, control of export line 21b is near the guide line of the blade tip of impeller outlet end on the spoon of blade.The curvature of import barrier line 21a is greater than the curvature of control of export line 21b.Preferably, the curvature of spoon of blade reduces successively or raises earlier to control of export line 21b from import barrier line 21a and reduces.More preferably, the curvature of import barrier line 21a is the twice of control of export line 21b.
In a certain embodiment of the utility model; Blade 21 integral body are by the spill of pressure side to the suction surface depression; As shown in Figure 3, with the two-end-point of first straightway A connection blade, 21 import barrier line 21a, connect mid point and the impeller axle center O of this first straightway A then with the second straightway B; Make the tangent line of blade 21 import barrier line 21a through impeller axle center O with the 3rd straightway C; And be as the criterion with the gained second straightway B position, the angle that records the second straightway B and the 3rd straightway C is about 4 °, and promptly blade 21 import barrier line 21a are to recessed 4 ° of blade 21 suction surface directions; Recessed about 2 ° to blade 21 suction surfaces of blade 21 control of export line 21b are handled in same setting-out at blade 21 control of export line 21b places.
As a kind of preferred version; Have two straightways and a curved section between two straightways on the guide line 211; Numerous straightway constitutes two conventional zones on the spoon of blade, rounding off between the adjacent area on each conventional zone and the spoon of blade.Preferably, curved section is circular arc or parabola shaped.
According to the utility model on the other hand, the centrifugal compressor that provides has impeller, and wherein, impeller is above-mentioned impeller.
From above description, can find out the impeller of the utility model and comprising in the centrifugal compressor of this impeller; Through the impeller three dimensional design; Change the form of the guide line 211 of impeller blade 21 into curvilinerar figure from lineal shape, present certain tortuosity in the middle of making centrifugal impeller blade 21, and then reduce or eliminated the impact and the separation losses of impeller inlet; Improved impeller fluid flow inside structure, improved impeller adiabatic efficiency further, widened efficient district scope and reduced the surge flow.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (12)
1. impeller comprises:
Wheel hub (22);
Blade (21), the surface is a spoon of blade, the guide line (211) on the said blade (21) is combined to form the shape of said spoon of blade,
It is characterized in that on said spoon of blade, the said guide line (211) at least a portion surface area is a curve.
2. impeller according to claim 1; It is characterized in that; Also comprise wheel cap (23); The end line that said blade (21) is positioned at said wheel hub (22) one sides forms the hub side streamline (212) of said blade (21); The end line that said blade (21) is positioned at said wheel cap (23) one sides forms the wheel cap effluent line (213) of said blade (21), has one or more center line of flow path (214) between said hub side streamline (212) and the said wheel cap effluent line (213), and said guide line (211) is confirmed through least square fitting by said hub side streamline (212), said wheel cap effluent line (213) and said center line of flow path (214).
3. impeller according to claim 1 is characterized in that, said blade (21) is by the spill of pressure side to the suction surface depression.
4. impeller according to claim 3 is characterized in that, said guide line (211) comprises import barrier line (21a) and control of export line (21b), and the curvature of said import barrier line (21a) is greater than the curvature of said control of export line (21b).
5. impeller according to claim 4 is characterized in that, the curvature of said spoon of blade reduces from said import barrier line (21a) to said control of export line (21b) successively.
6. impeller according to claim 4 is characterized in that, the curvature of said import barrier line (21a) is the twice of said control of export line (21b).
7. impeller according to claim 4 is characterized in that, the curvature of said spoon of blade raises earlier from said import barrier line (21a) to said control of export line (21b) and reduces.
8. impeller according to claim 3; It is characterized in that; Said guide line has at least one straightway on (211), and said straightway constitutes the conventional zone on the said spoon of blade, rounding off between the adjacent area on said conventional zone and the said spoon of blade.
9. impeller according to claim 8 is characterized in that, said guide line (211) has two said straightways and a curved section between two said straightways.
10. impeller according to claim 9 is characterized in that said curved section is circular arc or parabola shaped.
11. impeller according to claim 3 is characterized in that, each said guide line (211) all is parabola shaped.
12. a centrifugal compressor has impeller, it is characterized in that, said impeller is each described impeller among the claim 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200572613U CN202441647U (en) | 2012-02-21 | 2012-02-21 | Impeller and centrifugal compressor comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200572613U CN202441647U (en) | 2012-02-21 | 2012-02-21 | Impeller and centrifugal compressor comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202441647U true CN202441647U (en) | 2012-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200572613U Withdrawn - After Issue CN202441647U (en) | 2012-02-21 | 2012-02-21 | Impeller and centrifugal compressor comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202441647U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256248A (en) * | 2012-02-21 | 2013-08-21 | 珠海格力电器股份有限公司 | Impeller and centrifugal compressor comprising same |
| CN105209763A (en) * | 2013-04-17 | 2015-12-30 | 苏尔寿管理有限公司 | Impeller for a centrifugal pump and centrifugal pump |
| CN109781043A (en) * | 2019-02-13 | 2019-05-21 | 广东省计量科学研究院（华南国家计量测试中心） | Heat exchange fin key parameter calculation method and analytical calculation platform |
| CN110725808A (en) * | 2019-10-31 | 2020-01-24 | 中国科学院工程热物理研究所 | Centrifugal impeller blade, configuration method and centrifugal compressor |
-
2012
- 2012-02-21 CN CN2012200572613U patent/CN202441647U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256248A (en) * | 2012-02-21 | 2013-08-21 | 珠海格力电器股份有限公司 | Impeller and centrifugal compressor comprising same |
| CN105209763A (en) * | 2013-04-17 | 2015-12-30 | 苏尔寿管理有限公司 | Impeller for a centrifugal pump and centrifugal pump |
| CN109781043A (en) * | 2019-02-13 | 2019-05-21 | 广东省计量科学研究院（华南国家计量测试中心） | Heat exchange fin key parameter calculation method and analytical calculation platform |
| CN110725808A (en) * | 2019-10-31 | 2020-01-24 | 中国科学院工程热物理研究所 | Centrifugal impeller blade, configuration method and centrifugal compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120919 Effective date of abandoning: 20150826 |
|
| RGAV | Abandon patent right to avoid regrant |