CN205117800U - A three -dimensional flow closed casting impeller for low -speed operation air -blower - Google Patents
A three -dimensional flow closed casting impeller for low -speed operation air -blower Download PDFInfo
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- CN205117800U CN205117800U CN201520835818.5U CN201520835818U CN205117800U CN 205117800 U CN205117800 U CN 205117800U CN 201520835818 U CN201520835818 U CN 201520835818U CN 205117800 U CN205117800 U CN 205117800U
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Abstract
The utility model relates to a three -dimensional flow closed casting impeller for low -speed operation air -blower, especially a three -dimensional flow closed casting impeller. The impeller includes preceding disk body, back disk body and blade, its characterized in that: the front portion of preceding disk body is the air inlet circle, and the rear portion is the shroud, be equipped with the reel in the middle of the back disk body to reach siamesed hub disk with it, attenuate is radially gradually followed to the thickness of hub disk, the impeller is equipped with a N three -dimensional twisted blade. The utility model discloses because adopted preceding disk body, back disk body and blade integration hot investment casting forming technology, the casting precision is high, guarantees that the smooth finish of runner accords with the designing requirement, the utility model discloses a blade export clamping angle is 500 -700, and the leading edge of blade narrows down with the thickness taper of trailing edge, has both saved the material, has guaranteed intensity again, also accords with fluid movement's law. The utility model discloses because of taking advance three -dimensional flow theoretical design and carried out simulation and analysis based on the CFD technique, therefore the impeller is pneumatic efficient, simultaneous processing conveniently, low in manufacturing cost.
Description
Technical field
The utility model relates to a kind of impeller for low speed multistage centrifugal blower, especially a kind of three-dimensional flow closed casting impeller.
Background technique
Impeller is a blower rotor part, includes two-dimensional current impeller and three-dimensional flow impeller.In prior art, for the impeller of low speed multistage centrifugal blower, the main impeller adopting two-dimensional current structure.The characteristics of motion that can not adapt to fluid completely of two-dimensional current impeller, thus gas flow efficiency is low.Along with the development of computer technology, people according to three-dimensional flow theory, can design high efficiency three-dimensional flow impeller.At present in blower industry, three-dimensional flow impeller is mainly used on single-stage high-speed blower, for solely coiling semi-open type.In addition, existing three-dimensional flow impeller is through five-shaft linkage numerically controlled machine machine shaping, and its material and processing cost are all very high.
Model utility content
The purpose of this utility model is to provide that a kind of pneumatic efficiency is high, integrally casting, easy to process, and cost of production is lower, the three-dimensional flow double shrouded wheel on the centrifugal blower of the multistage cylindrical structure of low speed.
For achieving the above object, the utility model adopts following technological scheme: a kind of three-dimensional flow closed casting impeller for low cruise blower, comprise front disk body, rear disk body and blade, it is characterized in that: the front portion of described front disk body is air inlet ring, and rear portion is hub disk; Reel is provided with in the middle of described rear disk body, and the hub disk of disjunctor with it, the thickness of described disk body, radially thinning gradually; Impeller is provided with N number of three-dimensional twisted blade.
Described front disk body is identical with the external diameter of rear disk body.
Described blade (3) N>17 sheet.
Described reel axle side protrudes from the bottom of hub disk axle head, is provided with Y concentric circle teeth groove in the bottom of this reel, and the knuckle-tooth groove mechanical of the Ye Panshang of described teeth groove and blower is sealed and matched.
Described concentric circle teeth groove (23) Y>=3.
Described reel end face is parallel with air inlet ring end face, and lower than air inlet ring.
Described blade exit established angle is 50
0-70
0degree,
A kind of three-dimensional flow closed casting impeller for low cruise blower of the present utility model, owing to have employed front disk body, rear disk body and blade integration lost wax casting moulding process, casting accuracy is high, ensures that the degree of finish of runner meets designing requirement.Blade exit established angle of the present utility model is 50
0-70
0, the thickness of the frontier and rear of blade narrows gradually, both saves material, in turn ensure that intensity, also meets the rule of fluid motion.The utility model is because taking advanced three-dimensional flow theory design and having carried out simulation analysis based on computation fluid dynamics (CFD) technology, and therefore the pneumatic efficiency of impeller is high, simultaneously easy to process, low cost of manufacture.
Accompanying drawing explanation
Fig. 1 is three-dimensional flow impeller schematic diagram of the present utility model.
Fig. 2 is three-dimensional flow impeller sectional view of the present utility model.
Fig. 3 is the Leaf positional distribution view of three-dimensional flow impeller of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.
Shown in Figure 1, the utility model is the three-dimensional flow double shrouded wheel for low speed multistage centrifugal blower, and its structure is by front disk body 1, and rear disk body 2, blade 3 integrally casting forms, and described front disk body 1 is identical with the external diameter of rear disk body 2.
Described front disk body 1 is made up of two-part, is respectively air inlet ring 11 and shroud 12, and the sidewall of described air inlet ring 11 is provided with groove 13, groove 13 and blower fan between coiling, form Spielpassung.
Described rear disk body 2 has two-part, and be reel 21 in the middle of it, disjunctor is hub disk 22 with it, and described reel 21 axle side protrudes from the bottom of hub disk 22.The thickness of described hub disk 22, radially thinning gradually.Have through hole in the middle of described reel 21, be provided with keyway 211 in hole, rear disk body 2 is connected by flat key with between blower fan main shaft; Described reel 21 end face is parallel with air inlet ring 11 end face, and at a distance of a segment distance.
Described blade 3, according to three-dimensional flow theory, is designed to three dimensional streamline, makes front disk body 1, rear disk body 2 and blade 3 cast all-in-one-piece structure.The material of described impeller adopts fine aluminum alloy, and blade 3 exit installation angle is 50
0-70
0.The quantity of described blade 3, for being greater than 17, is less than 25.Described blade 3 is circumferentially arranged between front disk body 1, rear disk body 2 equably.
Shown in Figure 2, the thickness of the rear disk body 2 of described impeller, radially thinning gradually.Described blade 3 thickness, from its interior edge face, reduces to its exterior edge face camber line, both can save material, and can ensure that intensity again, and also meet fluid motion rule.
Shown in Figure 3, described blade 3 is three-dimensional twisted, and its molded line is streamlined, is conducive to gas flow, owing to have employed closed type integral casting pattern, makes gas flow more smooth and easy, improves the pneumatic efficiency of blower fan.Through verification experimental verification, the polytropic efficiency of installing the multistage centrifugal blower of three-dimensional flow closed casting impeller of the present utility model reaches 78%, improves about 8% than the polytropic efficiency of conventional two-dimensional current multistage centrifugal blower.
The most preferred embodiment of three-dimensional flow impeller of the present utility model, its parameter area is: hub diameter d
h=0.25m, impeller 3 inlet diameter D0 needs to choose between 0.42 ~ 0.445m according to flow, blade inlet diameter D1 chooses between 0.385 ~ 0.405m according to the needs of flow, leaf road throat width b1 chooses between 0.07 ~ 0.085m according to the needs of flow, and leaf road exit width b2 chooses between 0.02 ~ 0.040m according to the needs of flow.
Wheel speed 2980rpm, impeller outer diameter D2 can choose according to the needs of boosting between 0.83 ~ 0.91m.
The intersection of meridional channel and shroud and hub disk all adopts spline curve shaping, and the most minimal thickness of shroud is 7mm, and the most minimal thickness of hub disk is 8mm.
The number of blade of each impeller is 19, and blade outlet angle is 60 °, and shaping by connecting nearly 150 spatial point, reach three dimensional space distortion, blade interior thickness is 6.5mm, fines away in two.
Claims (7)
1. for a three-dimensional flow closed casting impeller for low cruise blower, comprise front disk body (1), rear disk body (2) and blade (3), it is characterized in that: the front portion of described front disk body (1) is air inlet ring (11), and rear portion is shroud (12); Reel (21) is provided with in the middle of described rear disk body (2), and the hub disk (22) of disjunctor with it, the thickness of described hub disk (22), radially thinning gradually; Impeller is provided with N number of three-dimensional twisted blade (3).
2. a kind of three-dimensional flow closed casting impeller for low cruise blower according to claim 1, is characterized in that: described front disk body (1) is identical with the external diameter of rear disk body (2).
3. a kind of three-dimensional flow closed casting impeller for low cruise blower according to claim 1, is characterized in that: described blade (3) N>17 sheet.
4. a kind of three-dimensional flow closed casting impeller for low cruise blower according to claim 1, it is characterized in that: described reel (21) axle side protrudes from the bottom of hub disk (22) axle head, be provided with Y concentric circle teeth groove (23) in the bottom of this reel (21), described teeth groove (23) is sealed and matched with the knuckle-tooth groove mechanical of the Ye Panshang of blower.
5. a kind of three-dimensional flow closed casting impeller for low cruise blower according to claim 4, is characterized in that: described concentric circle teeth groove (23) Y >=3.
6. a kind of three-dimensional flow closed casting impeller for low cruise blower according to claim 1, is characterized in that: described reel (21) end face is parallel with air inlet ring (11) end face, and lower than air inlet ring.
7. a kind of three-dimensional flow closed casting impeller for low cruise blower according to claim 1 or 3, is characterized in that: described blade exit established angle is 50-70 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520835818.5U CN205117800U (en) | 2015-10-27 | 2015-10-27 | A three -dimensional flow closed casting impeller for low -speed operation air -blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520835818.5U CN205117800U (en) | 2015-10-27 | 2015-10-27 | A three -dimensional flow closed casting impeller for low -speed operation air -blower |
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|---|---|
| CN205117800U true CN205117800U (en) | 2016-03-30 |
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| CN201520835818.5U Active CN205117800U (en) | 2015-10-27 | 2015-10-27 | A three -dimensional flow closed casting impeller for low -speed operation air -blower |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275873A (en) * | 2015-10-27 | 2016-01-27 | 上海华鼓鼓风机有限公司 | Three-dimensional flow closed type casting impeller used for low-speed running air blower |
| CN112549570A (en) * | 2019-09-25 | 2021-03-26 | 协磁股份有限公司 | Method for manufacturing three-dimensional plastic impeller of centrifugal pump and structure thereof |
| WO2021056258A1 (en) * | 2019-09-25 | 2021-04-01 | 协磁股份有限公司 | Method for manufacturing three-dimensional plastic impeller of centrifugal pump and structure thereof |
| JP7506423B2 (en) | 2022-09-26 | 2024-06-26 | 協磁股▲ふん▼有限公司 | Centrifugal Pump Impeller |
-
2015
- 2015-10-27 CN CN201520835818.5U patent/CN205117800U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275873A (en) * | 2015-10-27 | 2016-01-27 | 上海华鼓鼓风机有限公司 | Three-dimensional flow closed type casting impeller used for low-speed running air blower |
| CN112549570A (en) * | 2019-09-25 | 2021-03-26 | 协磁股份有限公司 | Method for manufacturing three-dimensional plastic impeller of centrifugal pump and structure thereof |
| WO2021056258A1 (en) * | 2019-09-25 | 2021-04-01 | 协磁股份有限公司 | Method for manufacturing three-dimensional plastic impeller of centrifugal pump and structure thereof |
| KR20210038844A (en) * | 2019-09-25 | 2021-04-08 | 아쏘마 아이엔씨. | Three-dimensional plastic impeller manufacturing method and impeller of centrifugal pump |
| JP2022503420A (en) * | 2019-09-25 | 2022-01-12 | 協磁股▲ふん▼有限公司 | 3D plastic impeller of centrifugal pump and method of manufacturing impeller |
| CN112549570B (en) * | 2019-09-25 | 2022-10-14 | 协磁股份有限公司 | Method for manufacturing three-dimensional plastic impeller of centrifugal pump and structure thereof |
| JP7177524B2 (en) | 2019-09-25 | 2022-11-24 | 協磁股▲ふん▼有限公司 | Three-dimensional plastic impeller for centrifugal pump and method for manufacturing impeller |
| KR102546910B1 (en) | 2019-09-25 | 2023-06-23 | 아쏘마 아이엔씨. | 3D plastic impeller manufacturing method and impeller for centrifugal pump |
| US11739642B2 (en) | 2019-09-25 | 2023-08-29 | Assoma Inc. | Manufacturing method of 3-dimensional plastic impeller of centrifugal pump and the impeller |
| JP7506423B2 (en) | 2022-09-26 | 2024-06-26 | 協磁股▲ふん▼有限公司 | Centrifugal Pump Impeller |
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