CN105351250A - Centrifugal type diagonal impeller - Google Patents
Centrifugal type diagonal impeller Download PDFInfo
- Publication number
- CN105351250A CN105351250A CN201510964800.XA CN201510964800A CN105351250A CN 105351250 A CN105351250 A CN 105351250A CN 201510964800 A CN201510964800 A CN 201510964800A CN 105351250 A CN105351250 A CN 105351250A
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- CN
- China
- Prior art keywords
- impeller
- centrifugal
- front disc
- diagonal
- hub disk
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/20—Rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/96—Preventing, counteracting or reducing vibration or noise
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a centrifugal type diagonal impeller. The centrifugal type diagonal impeller is characterized in that an impeller front disc of the centrifugal type diagonal impeller is an arc surface downwards extending from the inner edge of the impeller front disc to the axial direction of the outer edge of the impeller front disc, and an impeller rear disc is an oblique plane axially upwards extending from the outer edge of the impeller rear disc to the center of the impeller rear disc; multiple blades are connected between the impeller front disc and the impeller rear disc, and an inclined diffusion flow channel is formed by the impeller front disc and the impeller rear disc; a flow guide cover is fixed in the center of the centrifugal type diagonal impeller. According to the design of the impeller front disc and the impeller rear disc, the centrifugal type diagonal impeller has the characteristics of efficiency, high pressure, low noise and the like of a centrifugal impeller and also has the features of high flow and the like of an axial impeller, and the comprehensive performance of the centrifugal type diagonal impeller greatly exceeds the performance of the impeller of a conventional centrifugal type axial flow fan.
Description
Technical field
The present invention relates to field of fluid machinery, specifically the centrifugal diagonal impeller of a kind of electric locomotive centrifugal axial flow traction ventilator.
Background technique
In locomotive field, owing to being subject to spatial constraints, a lot of ventilator all requires to adopt propeller fan.At a lot of specific position, it is such as the supporting cooling blower of traction electric machine, by correlated parts structural limitations, its air pipeline designs very complicated, cause flowing resistance large, general single-stage axial blower fan and axial flow tiltedly (mixing) flow fan all cannot provide the pressure of needs, and multistage ventilator structure is complicated, and manufacture cost is high.In this context, there is the centrifugal axial-flow blower adopting centrifugal impeller and axial flow air duct to work in coordination.But existing centrifugal axial-flow blower is all directly the impeller of centrifugal blower is installed in axial-flow blower to use, not centrifugal axial-flow blower truly, causes that fan efficiency is low, noise large, can not adapt to the development need of modern locomotive.
Therefore, how to design and a kind ofly there is efficient, high pressure, low noise centrifugal axial flow fan vane wheel become current problem demanding prompt solution.
Summary of the invention
According to the technical problem of above-mentioned proposition, and provide a kind of special centrifugal diagonal impeller being centrifugal axial-flow fan and developing.The present invention mainly through the design to impeller front disc and impeller hub disk, thus possesses efficient, the characteristic such as high pressure, low noise of centrifugal impeller.
The technological means that the present invention adopts is as follows:
A kind of centrifugal diagonal impeller, it is characterized in that: the impeller front disc of described centrifugal diagonal impeller is from described impeller front disc inner edge to described impeller front disc outer rim axial direction, the cambered surface that extends to lower, impeller hub disk to hoist the inclined-plane extended to described impeller hub disk central position, axially from described impeller hub disk outer rim; Be connected with multiple blade between described impeller front disc and described impeller hub disk, described impeller front disc and described impeller hub disk form a diffusion runner tilted; Air guide sleeve to be fixed in described centrifugal diagonal impeller in the heart.The design form of above-mentioned centrifugal diagonal impeller more impels the air-flow flowed out from centrifugal diagonal impeller runner more easily to turn to axial flow.
Further, the inclined-plane inclined angle alpha of described impeller hub disk is described impeller hub disk and radial angle, and described inclined-plane inclined angle alpha is determined by the static pressure of described ventilator and axial dimension, described inclined-plane inclined angle alpha value between 5 °-45 °.Design static pressure is lower, axial dimension nargin is larger, then inclined-plane inclined angle alpha is larger, otherwise, then less.
Further, the outlet of described centrifugal diagonal impeller is tilting outlet, blade exit angle of inclination beta is formed with axial, described blade exit angle of inclination beta is determined by the inside and outside air duct diameter ratio of static pressure with the ventilator being mated use, described blade exit angle of inclination beta value between 10 °-35 °.Under the prerequisite of restriceted envelope size, design static pressure is higher, then blade exit angle of inclination beta is less; Inside and outside air duct diameter is than larger, then blade exit angle of inclination beta is larger.The design of above-mentioned tilting outlet makes the diameter dimension from the nearest impeller hub disk of interior air duct less, be conducive to suppressing air-flow from radial steering shaft to time the separation of flow that causes.
Comparatively prior art is compared, the impeller front disc of the application by centrifugal diagonal impeller and the design of impeller hub disk, thus possess efficient, the characteristic such as high pressure, low noise of centrifugal impeller, possess the characteristics such as the large discharge of axial-flow blower, its combination property has surmounted the performance of existing centrifugal axial flow fan vane wheel greatly simultaneously.Coordinate corresponding ventilator to use again, can realize fan static efficiency and improve, static pressure efficiency, more than 70%, reaches the better level in current centrifugal blower substantially; The present invention can extensively promote for the foregoing reasons.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the sectional view of centrifugal diagonal impeller of the present invention.
Fig. 2 is the sectional view I that centrifugal diagonal impeller of the present invention is applied in axial flow traction ventilator.
Fig. 3 is the sectional view II that centrifugal diagonal impeller of the present invention is applied in axial flow traction ventilator.
In figure: 1, seal sponge rubber circle 2, slip ring 3, counter flange 4, centrifugal diagonal impeller 5, air guide sleeve 6, air conducting tube 7, motor 8, terminal box 9, impeller front disc 10, guide plate 11, impeller hub disk 12, guide ring 13, motor flange 14, interior air duct flange 15, interior air duct 16, rear guide vane 17, outer air duct 18, outlet 19, blade.
Embodiment
The present embodiment is applied in centrifugal axial flow traction ventilator for the present invention's centrifugal diagonal flow type impeller, like this beneficial effect of the present invention can better be described.
As shown in Figure 2 and Figure 3, centrifugal axial flow traction ventilator comprises the air conducting tube 6 be vertically arranged in electric locomotive, described air conducting tube 6 comprise outer air duct 17 be connected with by rear guide vane 16 in air duct 15, the bottom of described outer air duct 17 is provided with terminal box 8; Described rear guide vane 16 is inserting type welding structure with described interior air duct 15 and described outer air duct 17, the end flanges of described outer air duct 17 is provided with sealing sponge rubber circle 1, sealing sponge rubber circle has good compressibility, when being arranged in electric locomotive, can enclose by crush seal sponge rubber the effect of being tightly connected.
By the slip ring 2 that counter flange 3 is connected with the end flanges of described outer air duct 17;
Be arranged on the motor 7 on the interior air duct flange 14 of described interior air duct 15; Motor flange 13 is sat dress and is fixed on interior air duct flange 14; Described air conducting tube 6, described motor 7 all adopt aluminum alloy material to be made.
Be fixed on the centrifugal diagonal impeller 4 on the motor shaft of described motor 7, as shown in Figure 1, the impeller front disc 9 of described centrifugal diagonal impeller 4 is from described impeller front disc 9 inner edge to described impeller front disc 9 outer rim axial direction, the cambered surface that extends to lower, and impeller hub disk 11 to hoist the inclined-plane extended to described impeller hub disk 11 central position, axially from described impeller hub disk 11 outer rim; Be connected with multiple blade 19 between described impeller front disc 9 and described impeller hub disk 11, described impeller front disc 9 and described impeller hub disk 11 form a diffusion runner tilted; Air guide sleeve 5 to be fixed in described centrifugal diagonal impeller 4 in the heart.
As shown in Figure 1, the inclined-plane inclined angle alpha of described impeller hub disk 11 is described impeller hub disk 11 and radial angle, and described inclined-plane inclined angle alpha is determined by the static pressure of described ventilator and axial dimension, described inclined-plane inclined angle alpha value between 5 °-45 °.
The outlet 18 of described centrifugal diagonal impeller 4 is tilting outlet, blade exit angle of inclination beta is formed with axial, described blade exit angle of inclination beta is determined by the inside and outside air duct diameter ratio of static pressure with the ventilator being mated use, described blade exit angle of inclination beta value between 10 °-35 °.
Such as, need the high static pressure requirement realizing 4000Pa, control blower fan radial dimension simultaneously in limited range, need to select less inclined angle alpha angle, inclined-plane, inclined angle alpha angle, inclined-plane is 15 °, and select larger blade exit angle of inclination beta angle, blade exit angle of inclination beta angle is 30 °.
The outside of described blades front disk 9 is provided with guide plate 10, and described guide plate 10 coordinates with described outer air duct 17 makes the air flowed out near described impeller front disc 9 transfer axial flow to gradually.Air conducting tube 6 will be converted to pressure energy airflow kinetic energy, and reduces the energy loss in conversion process of energy, improves static pressure efficiency.And guide plate 10 and coordinating of outer air duct 17 can force the air flowed out near impeller front disc 9 to transfer axial flow gradually to, air can be greatly reduced to reflux forward simultaneously, alleviate the eddy current earthquake intensity of air in the chamber that slip ring 2, impeller front disc 9 and outer air duct 17 are formed, reduce energy loss, improve fan efficiency.
By adjusting the diameter of described interior air duct flange 14 thus adjusting the inlet end bore of described interior air duct 15, described air conducting tube 6 is made to be diffusion formula air channel; Described interior air duct 15 is provided with guide ring 12, and described guide ring 12 forms a convergent runner with described guide plate 10, described outer air duct 17.When air flows out from impeller, its tangential-velocity component is far away higher than axial component velocity, and namely the centrifugal force of air is much larger than the inertial force of axial flow, must form very large eddy current by the changeover portion coiled between 11 and interior air duct 15 after the impeller.In order to limit the development of eddy current, reduce eddy current loss, the present invention amplifies interior air duct 15 inlet end, and namely, air duct flange 14 diameter becomes large, reduces eddy current development space, makes air conducting tube 6 become diffusion formula air channel.The convergent runner that guide ring 12 and guide plate 10, outer air duct 17 are formed, can guide air following current road to flow unobstructedly, reduce airflow breakaway further.In expanding, the structure of air duct 15 inlet end and increase guide ring 12 can make ventilator simulation calculation static pressure efficiency improve nearly 2%.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technological scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (3)
1. a centrifugal diagonal impeller, it is characterized in that: the impeller front disc of described centrifugal diagonal impeller is from described impeller front disc inner edge to described impeller front disc outer rim axial direction, the cambered surface that extends to lower, impeller hub disk to hoist the inclined-plane extended to described impeller hub disk central position, axially from described impeller hub disk outer rim; Be connected with multiple blade between described impeller front disc and described impeller hub disk, described impeller front disc and described impeller hub disk form a diffusion runner tilted; Air guide sleeve to be fixed in described centrifugal diagonal impeller in the heart.
2. centrifugal diagonal impeller according to claim 1, it is characterized in that: the inclined-plane inclined angle alpha of described impeller hub disk is described impeller hub disk and radial angle, described inclined-plane inclined angle alpha is determined by the static pressure of described ventilator and axial dimension, described inclined-plane inclined angle alpha value between 5 °-45 °.
3. centrifugal diagonal impeller according to claim 1, it is characterized in that: the outlet of described centrifugal diagonal impeller is tilting outlet, blade exit angle of inclination beta is formed with axial, described blade exit angle of inclination beta is determined by the inside and outside air duct diameter ratio of static pressure with the ventilator being mated use, described blade exit angle of inclination beta value between 10 °-35 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510964800.XA CN105351250A (en) | 2015-12-18 | 2015-12-18 | Centrifugal type diagonal impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510964800.XA CN105351250A (en) | 2015-12-18 | 2015-12-18 | Centrifugal type diagonal impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105351250A true CN105351250A (en) | 2016-02-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510964800.XA Pending CN105351250A (en) | 2015-12-18 | 2015-12-18 | Centrifugal type diagonal impeller |
Country Status (1)
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| CN (1) | CN105351250A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108854649A (en) * | 2018-06-29 | 2018-11-23 | 杭州智仁建筑工程有限公司 | A kind of stirring runner for mixing arrangement |
| CN110685938A (en) * | 2019-10-09 | 2020-01-14 | 伦登风机科技(天津)有限公司 | Meridian acceleration centrifugal fan impeller of high-temperature industrial furnace |
| CN111075756A (en) * | 2019-12-16 | 2020-04-28 | 广东美的厨房电器制造有限公司 | Fan, guide plate, heating furnace and microwave heating device |
| CN114233652A (en) * | 2021-12-06 | 2022-03-25 | 中国船舶重工集团公司第七0四研究所 | Low-noise high-speed diagonal flow fan for ship |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5413004A (en) * | 1977-06-29 | 1979-01-31 | Kawasaki Heavy Ind Ltd | Vane wheel of linear radial inclined flow fan |
| JPH0759298A (en) * | 1993-08-11 | 1995-03-03 | Toshiba Corp | Centrifugal axial flow type motor-driven blower |
| JPH08191553A (en) * | 1995-01-10 | 1996-07-23 | Toshiba Corp | Centrifugal axial flow type electric blower |
| JPH10132310A (en) * | 1996-10-28 | 1998-05-22 | Daikin Ind Ltd | Centrifugal fan and air conditioner equipped with the same |
| CN1185547A (en) * | 1996-08-08 | 1998-06-24 | 三洋电机株式会社 | Impeller for centrifugal fan |
| CN2487901Y (en) * | 2001-05-21 | 2002-04-24 | 卜维平 | Closed inclined flow vane cylinder fan |
| CN102338121A (en) * | 2011-10-31 | 2012-02-01 | 永济新时速电机电器有限责任公司 | High-efficiency motor external fan |
| CN202955028U (en) * | 2012-10-30 | 2013-05-29 | 霍山县东风铸造有限公司 | Centrifugal fan impeller |
| CN103334940A (en) * | 2013-06-24 | 2013-10-02 | 永济新时速电机电器有限责任公司 | Inclined flow ventilator for subway locomotive filter reactor |
-
2015
- 2015-12-18 CN CN201510964800.XA patent/CN105351250A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5413004A (en) * | 1977-06-29 | 1979-01-31 | Kawasaki Heavy Ind Ltd | Vane wheel of linear radial inclined flow fan |
| JPH0759298A (en) * | 1993-08-11 | 1995-03-03 | Toshiba Corp | Centrifugal axial flow type motor-driven blower |
| JPH08191553A (en) * | 1995-01-10 | 1996-07-23 | Toshiba Corp | Centrifugal axial flow type electric blower |
| CN1185547A (en) * | 1996-08-08 | 1998-06-24 | 三洋电机株式会社 | Impeller for centrifugal fan |
| JPH10132310A (en) * | 1996-10-28 | 1998-05-22 | Daikin Ind Ltd | Centrifugal fan and air conditioner equipped with the same |
| CN2487901Y (en) * | 2001-05-21 | 2002-04-24 | 卜维平 | Closed inclined flow vane cylinder fan |
| CN102338121A (en) * | 2011-10-31 | 2012-02-01 | 永济新时速电机电器有限责任公司 | High-efficiency motor external fan |
| CN202955028U (en) * | 2012-10-30 | 2013-05-29 | 霍山县东风铸造有限公司 | Centrifugal fan impeller |
| CN103334940A (en) * | 2013-06-24 | 2013-10-02 | 永济新时速电机电器有限责任公司 | Inclined flow ventilator for subway locomotive filter reactor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108854649A (en) * | 2018-06-29 | 2018-11-23 | 杭州智仁建筑工程有限公司 | A kind of stirring runner for mixing arrangement |
| CN110685938A (en) * | 2019-10-09 | 2020-01-14 | 伦登风机科技(天津)有限公司 | Meridian acceleration centrifugal fan impeller of high-temperature industrial furnace |
| CN111075756A (en) * | 2019-12-16 | 2020-04-28 | 广东美的厨房电器制造有限公司 | Fan, guide plate, heating furnace and microwave heating device |
| CN114233652A (en) * | 2021-12-06 | 2022-03-25 | 中国船舶重工集团公司第七0四研究所 | Low-noise high-speed diagonal flow fan for ship |
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Application publication date: 20160224 |
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