CN104389817A - Surging-reduction low-noise blower impeller with adjustable blade angle - Google Patents
Surging-reduction low-noise blower impeller with adjustable blade angle Download PDFInfo
- Publication number
- CN104389817A CN104389817A CN201410616996.9A CN201410616996A CN104389817A CN 104389817 A CN104389817 A CN 104389817A CN 201410616996 A CN201410616996 A CN 201410616996A CN 104389817 A CN104389817 A CN 104389817A
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- CN
- China
- Prior art keywords
- blade
- wheel hub
- subtract
- blade angle
- surge
- 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.)
- Pending
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Classifications
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/34—Blade mountings
- F04D29/36—Blade mountings adjustable
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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
- F04D29/38—Blades
- F04D29/388—Blades characterised by construction
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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
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
Abstract
The invention discloses a surging-reduction low-noise blower impeller with an adjustable blade angle. The surging-reduction low-noise blower impeller comprises a plurality of blades and a hub for fixing the blades, wherein the thicknesses from the front edge to tail edge of each blade are different, each blade comprises 6-20 toothed blocks molded at the tail edge and lugs which are molded at the outer diameter of the blade and are protruded out of two surfaces of the blade, and each blade also comprises a mounting shaft connected with the hub, the mounting shafts are provided with round flanges; the hub is formed by connecting two hub disks, and the connecting surfaces of the two hub disks are provided with mounting grooves for fixing the mounting shafts and flange grooves for fixing the flanges.
Description
Technical field
The present invention relates to blower fan technical field, what particularly relate to a kind of regulating blade angle subtracts surge low-noise fan impeller.
Background technique
Current domestic high ferro and the tunnel of subway generally adopt blower fan to ventilate, axial-flow blower operationally can cause gas backstreaming to make blower fan produce vibration due to air port underpressure or strong pressure difference, the surging phenomenon of Here it is blower fan, blower fan produces surging phenomenon for a long time can the ventilation duct that is even connected with blower fan of badly damaged blower fan.Especially be arranged on high ferro, motor-car, the blower fan in subway and subway tunnel, can produce air pressure official post air port pressure moment sharply declines when train crosses tunnel, namely produces powerful pressure difference, thus causes violent surging phenomenon; Although bullet train keeps the air pressure in car by the intelligent piston in compartment, but because the speed of high ferro train is relatively high, air-flow around train can be run at high speed due to train and be become stable not, train is taken a breath by air-conditioning draught fan and is blown, so require that blower fan has enough performance opposings, prevent and improve the surge because pressure difference produces, being especially arranged on blower fan in tunnel and allowing replacement and maintenance work become difficulty.
The structure shape of fan blade and its established angle all can affect intensity and the cycle of blower fan surge.Disclosed in Chinese patent 2013-09-11, publication number a kind of draught fan impeller that has been the disclosure of the invention of 103291658A, this impeller is to the adjustment of the shape of blade, established angle, radius of curvature and blade chord length and blade height ratio, stop the backflow of root of blade air-flow, avoid the generation of impeller surging phenomenon.
Prevent the generation of surge not only relevant to the blade wheel structure of blower fan, for an overall blower fan, it is also the important measures preventing surge that well-formed between each parts coordinates, and prevents the blower fan structure of surge all can be different in addition in different operating environments.
Summary of the invention
The object of the invention is to for above problem, provide effectively can prevent a kind of regulating blade angle of blower fan surge subtract surge low-noise fan impeller.
In order to realize above effect, the technical solution used in the present invention is: a kind of regulating blade angle subtract surge low-noise fan impeller, comprise some blades and the wheel hub for stator blade, from first edge to the thickness of trailing edge not etc., described blade comprises and takes shape in ten the tooth blocks of six to two on trailing edge and to take shape on external diameter and to protrude from the fairshaped projection on blade two sides described blade; Described blade also comprises the installation shaft for being connected with wheel hub, described installation shaft forms circular flange; Described wheel hub is connected and composed by two wheel hub plate and on the junction surface of two wheel hub plate, is provided with the mounting groove for fixedly mounting axle and the flange groove for holding flange.
Further, the tooth root degree of depth of described tooth block is successively decreased from outside to inside successively.
Further, described two wheel hub plate are bolted.
Further, the main outline of described blade is for be made up of 16 three-dimensional curves, and wherein every bar curve is formed by connecting by 32 three-dimensional coordinate points, totally five hundred one ten two three-dimensional coordinate points.
Further, the thickness of described blade successively decreases from first edge gradually to trailing edge.
The invention has the beneficial effects as follows: blades installation angle of the present invention is adjustable, can regulate according to the setting angle of the working environment of reality to blade, can work under the setting angle of the best and make the impact of surge reduce to minimum.Projection on outer blade diameter can stop fraction to flow away and improve the pressure of blower fan in footpath outward, reducing the eddy current that fan blade edge produces when rotating, contributing to reducing blower fan surge; Tooth block on blade trailing edge can reduce the turbulence intensity on trailing edge, thus reduces noise.Loss when the not uniform thickness wing blade design of blade improves gas flow, improves the usefulness of blower fan entirety.
The shape employing of projection is streamlined reduces the windage produced by projection when blower fan rotates, and improving the pressure of blower fan, reducing the eddy current of fan blade edge generation when rotating, contribute to reducing blower fan surge.
Because the turbulence intensity of trailing edge overdraught is successively decreased from outside to inside successively, therefore the tooth root degree of depth of its tooth block is also successively decreased from outside to inside successively, can reduce the weight that noise also can reduce impeller.
Two wheel hub plate are bolted and it can be made to connect more firmly also can make two better occlusion stator blades of wheel hub plate.
Blade is made up of 16 three curves, every bar curve is formed by connecting by 32 three-dimensional coordinate points, the not uniform thickness design of totally five hundred one ten two three-dimensional coordinate points, this is through computer data simulation repeatedly and object test and draws and the fan blade curved surface blade profile of the not uniform thickness of the final shaping can effectively reduce loss during gas flow.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is exploded view of the present invention.
Fig. 3 is the partial enlarged drawing in Fig. 2 A.
Fig. 4 is the plan view of blade.
Fig. 5 is the side view of blade.
Wherein, 1 is blade, and 11 is tooth block, and 12 is projection, and 13 is installation shaft, and 131 is flange, and 2 is wheel hub, and 21 is wheel hub plate, and 211 is mounting groove, and 212 is flange groove.
Embodiment
Now with specific embodiment, the present invention's technological scheme required for protection is described in further detail by reference to the accompanying drawings.
As shown in Figure 1, the impeller of the present embodiment is made up of wheel hub 2 and six blades 1 installed on the hub 2.The reference quantity of blade 1 is 3-9 sheet, and technician can choose the blade 1 of suitable quantity according to actual needs.
As shown in Figures 2 and 3, wheel hub 2 is bolted by the wheel hub plate 21 that two sizes are identical and forms, the junction surface of two wheel hub plate 21 leaves mounting groove 211 and flange groove 212, when two wheel hub plate 21 merge mounting groove 211 in latter two wheel hub plate 21 and flange groove 212 also can merge thereupon.
As shown in Figure 4, blade 1 internal diameter of the present embodiment is provided with the installation shaft 13 of band round flange 131, and the effect of installation shaft 13 blade 1 can be installed with wheel hub 2 be connected.When installing, first two wheel hub plate 21 are separated, wherein mounting groove 211 and flange groove 212 are come out, the installation shaft 13 of blade 1 and flange 131 are put into mounting groove 211 with flange groove 212, then two wheel hub plate 21 are merged screwing bolts, mounting groove 211 and flange groove 212 are engaged installation shaft 13 and flange 131 tightly in an interference fit, thus blade 1 to fix on the hub 2.
As shown in Figure 4 and Figure 5, the thickness of the blade 1 of the present embodiment is reduced to trailing edge assembly by first edge, constitutes not uniform thickness design.Concrete shape can be described as and is made up of 16 three-dimensional curves, and every bar curve is formed by connecting by 32 three-dimensional coordinate points, the not uniform thickness design of totally five hundred one ten two three-dimensional coordinate points.The trailing edge of blade 1 forms ten tooth blocks 11, and these ten tooth blocks 11 are arranged on trailing edge and the degree of depth of its tooth root is successively decreased from outside to inside successively, and wherein said inward-outward direction refers to the internal diameter side of blade 1 and the direction of external diameter side.The external diameter of blade 1 forms projection 12, projection 12 in the present embodiment protrudes from the two sides of blade 1 along external diameter, and the shape of projection 12 is streamlined, effectively can reduce the windage produced by projection 12 when blower fan rotates, improve the pressure of blower fan, reducing the eddy current that fan blade edge produces when rotating, contributing to reducing blower fan surge.
The impeller of the present embodiment in use, technician can first according to the established angle of the job requirement adjusting vane 1 of reality, its foundation is for when the flow that ventilation system needs or pressure reduce, then reduce the established angle of blade 1, by controlling flow thus avoiding surge to occur, blade 1 established angle of the present embodiment can regulate between 20-40 degree.In addition, the design of the not uniform thickness of blade 1 improves loss during gas flow, improves the usefulness of blower fan entirety.Tooth block 11 on blade 1 trailing edge can be divided into some little whirlpools the strong concentrated vorticity that trailing edge border is formed thus reduce boundary layer turbulence intensity, reduces the noise of blower fan.And the projection 12 on external diameter can flow out thus make blower fan have higher pressure by stop portions air-flow on the external diameter direction of blade 1, reduce the eddy current that fan blade edge produces when rotating, thus avoid the generation of surge or reduce the intensity of surge.
The examples of implementation of the above are only the preferred embodiment of the present invention, not limit practical range of the present invention with this, therefore the change that all shapes according to the present invention, principle are done, all should be encompassed in protection scope of the present invention.
Claims (5)
1. regulating blade angle subtract a surge low-noise fan impeller, comprise some blades (1) and the wheel hub (2) for stator blade (1), it is characterized in that; From first edge to the thickness of trailing edge not etc., described blade (1) comprises and takes shape in ten the tooth blocks (11) of six to two on trailing edge and to take shape on external diameter and to protrude from the fairshaped projection (12) on blade (1) two sides described blade (1); Described blade (1) also comprises the installation shaft (13) for being connected with wheel hub (2), described installation shaft (13) forms circular flange (131); Described wheel hub (2) is connected and composed by two wheel hub plate (22) and the mounting groove (211) be provided with on the junction surface of two wheel hub plate (22) for fixedly mounting axle (13) and the flange groove (212) for holding flange (131).
2. a kind of regulating blade angle according to claim 1 subtract surge low-noise fan impeller, it is characterized in that; The tooth root degree of depth of described tooth block (11) is successively decreased from outside to inside successively.
3. a kind of regulating blade angle according to claim 1 subtract surge low-noise fan impeller, it is characterized in that; Described two wheel hub plate (22) are bolted.
4. a kind of regulating blade angle according to claim 1 subtract surge low-noise fan impeller, it is characterized in that; The main outline of described blade (1) is for be made up of 16 three-dimensional curves, and wherein every bar curve is formed by connecting by 32 three-dimensional coordinate points, totally five hundred one ten two three-dimensional coordinate points.
5. a kind of regulating blade angle according to claim 1 subtract surge low-noise fan impeller, it is characterized in that; The thickness of described blade (1) successively decreases from first edge gradually to trailing edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410616996.9A CN104389817A (en) | 2014-11-05 | 2014-11-05 | Surging-reduction low-noise blower impeller with adjustable blade angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410616996.9A CN104389817A (en) | 2014-11-05 | 2014-11-05 | Surging-reduction low-noise blower impeller with adjustable blade angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104389817A true CN104389817A (en) | 2015-03-04 |
Family
ID=52607763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410616996.9A Pending CN104389817A (en) | 2014-11-05 | 2014-11-05 | Surging-reduction low-noise blower impeller with adjustable blade angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104389817A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143524A (en) * | 2017-07-05 | 2017-09-08 | 陕西金翼通风科技有限公司 | A kind of axial fan blade |
| CN109237714A (en) * | 2018-09-21 | 2019-01-18 | 美的集团武汉制冷设备有限公司 | Air conditioner and its control method and storage medium |
| EP3896291A1 (en) * | 2020-04-14 | 2021-10-20 | York Guangzhou Air Conditioning and Refrigeration Co., Ltd. | Blade and axial flow impeller using same |
| CN114909244A (en) * | 2022-05-31 | 2022-08-16 | 江苏科技大学 | Underwater efficient bidirectional self-adaptive turbine hub and assembling method thereof |
Citations (6)
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| US20040101409A1 (en) * | 2002-11-27 | 2004-05-27 | Lg Electronics Inc. | Cool air circulation type axial flow fan for refrigerator |
| CN201241864Y (en) * | 2008-08-15 | 2009-05-20 | 新昌县科贸实业有限公司 | Wind impeller for fan |
| US20110094460A1 (en) * | 2008-02-21 | 2011-04-28 | Borgwarner Inc. | Partial ring cooling fan |
| CN102374193A (en) * | 2010-08-13 | 2012-03-14 | 施乐百股份公司 | Impeller Used For Fan |
| CN202971320U (en) * | 2012-12-20 | 2013-06-05 | 浙江亿利达风机股份有限公司 | Impeller |
| CN204312398U (en) * | 2014-11-05 | 2015-05-06 | 广东佳科风机股份有限公司 | A kind of regulating blade angle subtract surge low-noise fan impeller |
-
2014
- 2014-11-05 CN CN201410616996.9A patent/CN104389817A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040101409A1 (en) * | 2002-11-27 | 2004-05-27 | Lg Electronics Inc. | Cool air circulation type axial flow fan for refrigerator |
| US20110094460A1 (en) * | 2008-02-21 | 2011-04-28 | Borgwarner Inc. | Partial ring cooling fan |
| CN201241864Y (en) * | 2008-08-15 | 2009-05-20 | 新昌县科贸实业有限公司 | Wind impeller for fan |
| CN102374193A (en) * | 2010-08-13 | 2012-03-14 | 施乐百股份公司 | Impeller Used For Fan |
| CN202971320U (en) * | 2012-12-20 | 2013-06-05 | 浙江亿利达风机股份有限公司 | Impeller |
| CN204312398U (en) * | 2014-11-05 | 2015-05-06 | 广东佳科风机股份有限公司 | A kind of regulating blade angle subtract surge low-noise fan impeller |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143524A (en) * | 2017-07-05 | 2017-09-08 | 陕西金翼通风科技有限公司 | A kind of axial fan blade |
| CN109237714A (en) * | 2018-09-21 | 2019-01-18 | 美的集团武汉制冷设备有限公司 | Air conditioner and its control method and storage medium |
| EP3896291A1 (en) * | 2020-04-14 | 2021-10-20 | York Guangzhou Air Conditioning and Refrigeration Co., Ltd. | Blade and axial flow impeller using same |
| US11608835B2 (en) | 2020-04-14 | 2023-03-21 | York Guangzhou Air Conditioning And Refrigeration Co., Ltd. | Blade and axial flow impeller using same |
| CN114909244A (en) * | 2022-05-31 | 2022-08-16 | 江苏科技大学 | Underwater efficient bidirectional self-adaptive turbine hub and assembling method thereof |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150304 |