CN203856766U - Impeller - Google Patents
Impeller Download PDFInfo
- Publication number
- CN203856766U CN203856766U CN201420012429.8U CN201420012429U CN203856766U CN 203856766 U CN203856766 U CN 203856766U CN 201420012429 U CN201420012429 U CN 201420012429U CN 203856766 U CN203856766 U CN 203856766U
- Authority
- CN
- China
- Prior art keywords
- blade
- impeller
- wheel hub
- root
- described blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides an impeller, belongs to the technical field of machinery and solves the problems that the root of a blade of an existing impeller is narrower, thus the connection strength between the blade and a wheel disc is not high, and fracture is easily caused. The impeller comprises a hub and a blade, wherein the blade is connected to the outer side wall of the hub, the length ratio of the root of the blade to the blade is 1:2 to 1:4, the blade is in a spatial warping shape, and the side wall of the blade is a smooth arc surface. The impeller provided by the utility model has the advantage that the connection strength between the blade and the hub is larger.
Description
Technical field
The utility model belongs to mechanical part technical field, relates to a kind of impeller.
Background technique
In prior art, high-speed centrifugal fan or compressor adopt half-opened impeller more, and this kind of impeller is made up of blade and wheel disc.Stressed from impeller, it is mainly rotated produced centrifugal forces affect, and from distribution of force, maximum stress concentrates in the central through bore of impeller.And wheel back structure has critical effect for this maximum stress.In the time that the impeller pressure ratio of large flow exceedes 3, need very high rotating speed.And square being directly proportional of centrifugal force and rotating speed also just means the stressed sharply soaring of impeller, harsher to the requirement of structure.And above-mentioned blade wheel structure in intensity, oneself cannot meet usage requirement, adopt high-intensity material if be forced to, can significantly improve cost of production.
A kind of half-opened impeller structure (application number: 201320440194.8 as disclosed in Chinese patent literature, authorize publication number: CN 203348158 U), comprise vane group and wheel disc, vane group is made up of several blades, blade is centrosymmetric and is uniformly distributed in the front of wheel disc with wheel disk center, the center of wheel disc is provided with an axial through hole, in the outwardly formation boss of the back side of wheel disc normal vector direction first, the axis of boss first and the dead in line of wheel disc, through hole connects described boss first, boss first extends out to height by the back side of wheel disc and continues after first outwardlyly to form to height H, its boss first is provided with A-grade in the first class surface, B-grade in the first class surface and junction surface, junction surface connects respectively A-grade in the first class surface and B-grade in the first class surface, the chamfer radius of junction surface is R.But the narrower join strength of blade and wheel disc that makes of the root of the blade of this impeller is not high, and blade easily ruptures.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed the larger impeller of join strength of a kind of blade and wheel hub.
The purpose of this utility model can realize by following technical proposal: a kind of impeller, comprise wheel hub and be connected to the blade of the outer side wall of wheel hub, it is characterized in that, the length ratio of the root of described blade and described blade is 1:2 to 1:4, described blade is spatial warping shape, and the sidewall of described blade is smooth cambered surface.
The length ratio of the root of blade and described blade is 1:2 to 1:4, makes blade have wider root, has increased the intensity of root of blade, and blade is spatial warping shape, effectively increases air-out area, makes the higher advantage of efficiency of impeller.
In above-mentioned impeller, the middle part of the lower end surface of described blade has the cambered surface of protrusion.The middle part of the lower end surface of blade has the cambered surface of protrusion, makes the higher and lower advantage of noise while using of the efficiency of this impeller.
In above-mentioned impeller, the quantity of described blade is 4-8 and is uniformly distributed centered by the axis of described wheel hub.The quantity of blade is 4-8 and is uniformly distributed centered by the axis of described wheel hub, makes air have larger turnover rate, has good using effect.
In above-mentioned impeller, between described wheel hub and described blade, adopt screw to be connected mutually.Between wheel hub and blade, adopt screw to be connected mutually, there is connection comparatively firmly and connect advantage comparatively easily.
In above-mentioned impeller, the middle part of the sidewall of described blade has bowing.The middle part of the sidewall of blade has bowing, makes air have larger turnover rate, has good using effect.
In above-mentioned impeller, the outer side wall of one end of the cylindrical and described wheel hub of described wheel hub is provided with some annular convex.Wheel hub is cylindrical, and the outer side wall of one end of wheel hub is provided with some annular convex, makes wheel hub have larger intensity.
Compared with prior art, this impeller has the following advantages:
1, the root of the blade of this impeller and the length ratio of blade are 1:2 to 1:4, make blade have wider root, have increased the intensity of root of blade, and blade is spatial warping shape, effectively increases air-out area, make the higher advantage of efficiency of impeller;
2, the middle part of the lower end surface of the blade of this impeller has the cambered surface of protrusion, makes the higher and lower advantage of noise while using of the efficiency of this impeller.
3, between the wheel hub of this impeller and blade, adopt screw to be connected mutually, there is connection comparatively firmly and connect advantage comparatively easily.
4, the middle part of the sidewall of the blade of this impeller has bowing, makes air have larger turnover rate, has good using effect.
Brief description of the drawings
Fig. 1 is that the master of this impeller looks schematic diagram.
Fig. 2 is the cross-sectional schematic of this impeller.
In figure, 1, wheel hub; 1a, annular convex; 2, blade; 3, screw.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As illustrated in fig. 1 and 2, a kind of impeller, comprises wheel hub 1 and is connected to the blade 2 of the outer side wall of wheel hub 1, the length ratio of the root of blade 2 and blade 2 is 1:2 to 1:4, and blade 2 is spatial warping shape, and the sidewall of blade 2 is smooth cambered surface.The middle part of the lower end surface of blade 2 has the cambered surface of protrusion, makes the higher and lower advantage of noise while using of the efficiency of this impeller.The quantity of blade 2 is 4-8 and is uniformly distributed centered by the axis of wheel hub 1, makes air have larger turnover rate, has good using effect.
Between wheel hub 1 and described blade 2, adopt screw 3 to be connected mutually, there is connection comparatively firmly and connect advantage comparatively easily.The middle part of the sidewall of blade 2 has bowing, makes air have larger turnover rate, has good using effect.The outer side wall of one end of the cylindrical and described wheel hub 1 of wheel hub 1 is provided with some annular convex 1a, makes wheel hub 1 have larger intensity.
The root of blade 2 is 1:2 to 1:4 with the ratio of the width of described blade 2, makes blade 2 have wider root, has increased the intensity of blade 2 roots, and blade 2 is spatial warping shape, effectively increases air-out area, makes the higher advantage of efficiency of impeller.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendments or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although more used wheel hub 1, annular convex 1a, blade 2, screw 3 herein
Deng term, but do not get rid of the possibility that uses other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (4)
1. an impeller, comprise wheel hub (1) and be connected to the blade (2) of the outer side wall of described wheel hub (1), it is characterized in that, the length ratio of the root of described blade (2) and described blade (2) is 1:2 to 1:4, described blade (2) is spatial warping shape, the sidewall of described blade (2) is smooth cambered surface, the middle part of the lower end surface of described blade (2) has the cambered surface of protrusion, and the middle part of the sidewall of described blade (2) has bowing.
2. impeller according to claim 1, is characterized in that, the quantity of described blade (2) is 4-8 and is uniformly distributed centered by the axis of described wheel hub (1).
3. impeller according to claim 1 and 2, is characterized in that, between described wheel hub (1) and described blade (2), adopts screw (3) to be connected mutually.
4. impeller according to claim 1 and 2, is characterized in that, the outer side wall of one end of the cylindrical and described wheel hub (1) of described wheel hub (1) is provided with some annular convex (1a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420012429.8U CN203856766U (en) | 2014-01-09 | 2014-01-09 | Impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420012429.8U CN203856766U (en) | 2014-01-09 | 2014-01-09 | Impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203856766U true CN203856766U (en) | 2014-10-01 |
Family
ID=51606620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420012429.8U Expired - Fee Related CN203856766U (en) | 2014-01-09 | 2014-01-09 | Impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203856766U (en) |
-
2014
- 2014-01-09 CN CN201420012429.8U patent/CN203856766U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141001 Termination date: 20170109 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |