CN105298877A - Centrifugal axial flow fan - Google Patents
Centrifugal axial flow fan Download PDFInfo
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- CN105298877A CN105298877A CN201510801414.9A CN201510801414A CN105298877A CN 105298877 A CN105298877 A CN 105298877A CN 201510801414 A CN201510801414 A CN 201510801414A CN 105298877 A CN105298877 A CN 105298877A
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- 238000005452 bending Methods 0.000 claims abstract description 3
- 238000009434 installation Methods 0.000 claims description 7
- 230000003137 locomotive effect Effects 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 5
- 230000008901 benefit Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 abstract 5
- 230000009286 beneficial effect Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000000306 component Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The invention provides a centrifugal axial flow fan. The centrifugal axial flow fan comprises a cylindrical shell, an air inlet, an air outlet, an air inlet flow collector, a centrifugal impeller, a motor supporting barrel, an axial flow impeller, a motor, an air blocking ring and a guide vane. The air inlet is formed in the axial front end of the shell, and the air outlet is formed in the axial tail end of the shell. The shell is internally provided with the air inlet flow collector, the centrifugal impeller, the motor supporting barrel and the axial flow impeller from the axial front end to the axial tail end in sequence. The motor is arranged in the motor supporting barrel. The air blocking ring is arranged between the shell and the centrifugal impeller in the radial direction. The guide vane is arranged between the shell and the motor supporting barrel in the radial direction. The air blocking ring comprises an arc body, and air can easily flow to the air outlet in the bending direction of the arc body. The axial tail end of the air blocking ring is fixedly arranged on the inner wall of the shell, the axial front end of the air blocking ring is a free end and is flush with a front wheel disc tail end or is located at the axial front end of the front wheel disc tail end. The fan has the beneficial effects of being large in flow, low in noise, small in occupied space, easy and convenient to install and high in efficiency at the same time.
Description
Technical field
The invention belongs to field of fluid machinery, relate to a kind of centrifugal axial flow-type blower fan, be specially a kind of rail motor set traction electric machine cooling centrifugal high pressure axial fan.
Background technique
Traction electric machine is the critical component that locomotive high-speed overload runs.During traction electric machine work, because load high speed is fast, motor internal winding will produce a large amount of heats.For preventing traction electric machine from crossing cause thermal damage, ensure that the normal work of locomotive, need supporting ventilator to force heat radiation to traction electric machine, ventilator is the core component in locomotive ventilation system.
Tractive motor hanging is in locomotive bottom position, and by pipeline air-supply cooling, because locomotive layout considers that the longer resistance of supply air duct is comparatively large, and the blast that traction electric machine cooling needs is also higher, therefore ventilator is proposed to the requirement of high-pressure high-flow.Existing centrifugal blower can meet the feature of high pressure, but the feature of its structure need larger space and ventilate flow less; And axial-flow blower can the demand of meeting spatial installation dimension and flow, but pressure of its conveying is lower, is difficult to reach high pressure.
Chinese invention patent CN201110049606.0 relates to one and had both had axial-flow blower flow greatly, can be designed to the air stream axle of various different flow pressure ratio on request to the pipe type centrifugal blower passed in and out and centrifugal flow guiding method.Casing is pipeline configuration, and air intake end plate, air-out end plate are installed on the front end and back end of casing respectively, and air-flow enters blower fan from the round mouth of air intake end plate, discharges, reach the object that air-flow coaxially passes in and out from the round mouth of air-out end plate; Motor is positioned at pipeline center, and receded disk impeller to be arranged on motor shaft and to be provided with slip ring between receded disk impeller and air intake end plate, and its slip ring convergence mouth appropriateness inserts the entrance of impeller, and rule bundle air-flow enters receded disk impeller smoothly; Air-out fluid director is installed on casing inner wall rear portion, and its convergence end aims at the round mouth of air-out end plate, and rule bundle air-flow is discharged thus; Rectification and guide device is welded in casing inner wall, the top outer rim Spielpassung of its convergence end and receded disk impeller.After starting the motor of described blower fan, driven by motor receded disk impeller rotates, receded disk impeller rotates generation suction and gets rid of effect, air-flow is made to enter slip ring from the round mouth of air intake end plate, air-flow is changed into by the exhaust outlet discharge of common tangent direction discharge through the round mouth of air-out fluid director water conservancy diversion by air-out end plate, reach the object that air-flow coaxially passes in and out.
Above-mentioned design both compensate for the deficiency of axial-flow blower to a certain extent, compensate for again the defect of centrifugal blower.But this blower fan does not make design and the optimization of refinement to its internal structure, the most effective of this blower fan is made to reach about 55%.Therefore, related domain need to design a kind ofly have that flow is large, noise is low simultaneously, take up space little, simple installation and the high blower fan of efficiency.
Summary of the invention
The object of the invention is to solve the difficult point in background technique, under ensureing that in the confined space the rational layout of blower fan installs prerequisite, improve blower pressure and efficiency further, design a kind of centrifugal axial flow-type double-vane fan.
The invention provides a kind of centrifugal axial flow-type blower fan, comprise columnar casing, be arranged at the intake grill of casing axial forward end and the exhaust outlet of axial tail end, the air intake slip ring, centrifugal impeller, motor support cylinder and the axial-flow blower that set gradually from axial forward end to tail end in casing, be arranged on the motor in motor support cylinder, radial direction is arranged on the air baffle ring between casing and centrifugal impeller, and radial direction is arranged on the stator between casing and motor support cylinder; Described centrifugal impeller comprises and is connected to centrifugal impeller wheel hub on electric machine main shaft and wheel disc, blade and rear trochal disc before setting gradually from axial forward end to tail end; Described axial-flow blower comprises and is connected to axial-flow blower wheel hub on electric machine main shaft and axial-flow blower main body; Described air baffle ring comprises arcuation body, the direction of the bending direction of described arcuation body for the benefit of gas flow exhaust outlet; The axial tail end of air baffle ring is fixedly installed on the inwall of casing, and its axial forward end is free end, and the axial forward end of air baffle ring is concordant with front wheel disc tail end or be positioned at the axial forward end of front wheel disc tail end.
In the present invention, described centrifugal impeller 4 and axial-flow blower 6 all can use centrifugal impeller common in prior art and axial-flow blower, and described stator also can be conventional stator in blower fan.Wherein, well known to a person skilled in the art, centrifugal impeller is air inlet through hollow shaft and radial air-out; Axial-flow blower is axial air inlet/outlet.
Air baffle ring in the present invention is conducive to air-flow and transfers axial flow to by Radial Flow; At motor support cylinder built with motor for double-ended drive, the two axial ends of motor installs centrifugal impeller and axial-flow blower respectively; Be designed with assembling seat 11 in cylindrical casing outside, have motor supporting base in the indoor design of motor support cylinder; Stator is welded with between casing and motor support cylinder.
In the present invention, gas enters centrifugal impeller 4 from the axial direction of slip ring 3, and under the acting by centrifugal impeller 4, the total head of air-flow increases, and now air-flow is from axially becoming Radial Flow, leaves centrifugal impeller.Under the effect of air baffle ring 8, air-flow becomes axial flow from radial direction.Adopt the reason of centrifugal impeller to be, centrifugal impeller is high relative to the pressure head of axial-flow blower, and specific speed is little, so the pressure that air-flow obtains is large.Air baffle ring 8 adopts a kind of ring structure containing arcuation body 81, is conducive to rocket motor, reduces gas flow loss, and then improves pressure and the efficiency of blower fan.After air-flow transfers axial flow to, enter stator 9.Air-flow is in stator, and the part dynamic pressure of air-flow is converted into static pressure by one, and the deflection angle of the two adjustment air-flow, make there is a negative angle of attack between its coaxial flow impeller 6, this design can improve the pressure of gas further.Air-flow enters axial-flow blower 6 after flowing out from stator 9, after being done work further, improve the total head of gas, and air-flow outgassing direction is axial flow by axial-flow blower, flows out from the exhaust outlet 10 of the axial tail end of casing.
In a kind of concrete mode of execution, described air baffle ring also comprises the flat board being connected to arcuation body radially inner side and axial forward end.
In a kind of concrete mode of execution, the free end of air baffle ring is concordant in the axial direction with the tail end of front wheel disc 41, and the two is diametrically at a distance of 1 ~ 2mm.
In a kind of concrete mode of execution, described motor support cylinder 7 is the cone cylinder that front end is large, tail end is little, and cone cylinder sidewall and axis angle are 6 ~ 10 °.Motor support cylinder shown in accompanying drawing is cylindrical structure, and in centrifugal axial flow-type blower fan provided by the invention, if motor support cylinder is set to cone cylinder sidewall and axis angle when being the cone cylinder that front end is large, tail end is little of 6 ~ 10 °, the efficiency of gained blower fan can reach higher.
In a kind of concrete mode of execution, stator exit installation angle is 85 ° ~ 87 °.In prior art, the exit installation angle being positioned at the stator between motor support cylinder and casing is generally 90 °, in optimal way of the present invention, Comparatively speaking stator exit installation angle want little 3 ° ~ 5 °, namely 85 ° ~ 87 °.
In a kind of concrete mode of execution, described blower fan also comprises the stiffening rib be arranged on casing 1 outer wall.Described air intake slip ring 3 is arranged on casing 1 by bolt.
In a kind of concrete mode of execution, described motor 1 is connected through flange arrangement with the front end of motor support cylinder 5.In a kind of concrete mode of execution, motor is by Flange joint on motor mount, and motor mount is welded in motor support cylinder.
In a kind of concrete mode of execution, described blower fan also comprises for by direct-connected for the centrifugal impeller spindle nose braking device in axle front end, motor one end; The axle front end spindle nose braking device of axial-flow blower is connected at the other end of motor.
In a kind of concrete mode of execution, described blower fan also comprises the assembling seat 11 be arranged on air duct outer wall.
In a kind of concrete mode of execution, the gap before air baffle ring 8 and impeller 4 between wheel disc is little is as far as possible advisable, and considering under the condition that technique is permitted, advises at 1 ~ 2mm.
The present invention also provides the application of a kind of blower fan described above in cooling rail locomotive traction electric machine.
Generally speaking, adopt scheme provided by the invention, be combined centrifugal impeller, air baffle ring, stator and axial-flow blower, centrifugal impeller can well improve blower press; Air baffle ring can reduce the flow losses of blower fan, transfers air-flow to axial flow by radial direction; The part dynamic pressure of air-flow, under the guide functions of stator, is converted into static pressure by air-flow, and flow angle can be converted into the negative angle of attack of axial-flow blower, is conducive to the total head improving blower fan further.
Blower fan provided by the invention has that flow is large, noise is low simultaneously, take up space little, simple installation and the high advantage of efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of blower fan of the present invention,
Fig. 2 is centrifugal impeller schematic cross-section,
Fig. 3 is axial-flow blower schematic cross-section,
Fig. 4 is centrifugal impeller perspective view,
Fig. 5 is axial-flow blower perspective view,
Fig. 6 is air baffle ring perspective view;
In figure, 1, casing, 2, intake grill, 3, air intake slip ring, 4, centrifugal impeller, 5, motor support cylinder, 6, axial-flow blower, 7, motor, 8, air baffle ring, 9, stator, 10, exhaust outlet, 11, assembling seat, 12, wind direction flowing mark;
41, front wheel disc, 42, blade, 43, rear trochal disc, 44, centrifugal impeller wheel hub, 411, front wheel disc tail end, 61, axial-flow blower main body, 62, axial-flow blower wheel hub, 81, arcuation body, 82, dull and stereotyped.
Embodiment
Fig. 1 provides a kind of centrifugal axial flow-type double-vane fan, it comprises air intake slip ring 3, centrifugal impeller 4, air baffle ring 8, casing 1, motor 7, stator 9, motor support cylinder 5, axial-flow blower 6, be positioned at the spindle nose braking device of centrifugal impeller end and be positioned at the spindle nose braking device of axial-flow blower end, assembling seat 11 and wind direction flowing mark 12.Air intake slip ring 3 is installed on the front end of casing 1 by construction bolt, and air-flow enters blower fan from slip ring 3; Motor 7 is positioned at pipeline center, is connected between motor 7 and the motor mount of motor support cylinder 5 with fixing bolt; Centrifugal impeller 4 is arranged on the axle of motor 7, and uses spindle nose braking device to fix centrifugal impeller, and slip ring 3 is restrained the entrance that mouth appropriateness inserts centrifugal impeller 4, rule bundle air-flow enters centrifugal impeller 4 smoothly; Air baffle ring 8 is welded on casing 1, air baffle ring is an annular circular ring, plan view is one section of circular arc and one section of straight plate structure, its straight Board position is concordant in the axial direction with wheel disc tail end before centrifugal impeller 4, air baffle ring 8 guides air-flow by radial direction to axial motion, the loss that rocket motor brings can be reduced, thus improve blower press; Between motor support cylinder 5 and casing 1, weld stator 9, dynamic pressure is slowly converted into static pressure by air-flow in stator, and air-flow enters axial-flow blower 6 with certain angle of attack simultaneously; Air-flow flows into axial-flow blower 6, owing to there is the negative angle of attack, can improve the total head of blower fan further after flowing out from stator 9.Air-flow flows out from the exhaust outlet 10 of casing 1 tail end axial direction, and wherein most of wind discharges blower fan from the blade of axial-flow blower 6.Assembling seat 11 is welded in the outer wall of casing 1, and assembling seat 11 is mainly used in the lifting transport of blower fan and installs assembling.
Centrifugal impeller in the present invention and axial-flow blower difference according to requirements can adopt Fine Steel Casting iron, corrosion-resistant stainless steel manufacture, through strict dynamic balance check, and smooth running.The high-strength structure that can carry negative pressure made by casing and motor support cylinder, and its manufactured materials also can adopt Fine Steel Casting iron or corrosion-resistant stainless steel by the difference of usage requirement.
Blower fan loss provided by the invention is little, and operational efficiency is high, is promoted to fan efficiency in the present invention can meets or exceeds 70% by about 55% of fan efficiency the most close in prior art.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a centrifugal axial flow-type blower fan, comprise columnar casing (1), be arranged at the intake grill (2) of casing axial forward end and the exhaust outlet (10) of axial tail end, the air intake slip ring (3) set gradually from axial forward end to tail end in casing, centrifugal impeller (4), motor support cylinder (5) and axial-flow blower (6), be arranged on the motor (7) in motor support cylinder (5), radial direction is arranged on the air baffle ring (8) between casing (1) and centrifugal impeller (4), and the stator (9) radial direction is arranged between casing (1) and motor support cylinder (5), described centrifugal impeller (4) comprises and is connected to centrifugal impeller wheel hub (44) on electric machine main shaft and wheel disc (41), blade (42) and rear trochal disc (43) before setting gradually from axial forward end to tail end, described axial-flow blower (6) comprises and is connected to axial-flow blower wheel hub (62) on electric machine main shaft and axial-flow blower main body (61), described air baffle ring (8) comprises arcuation body (81), the direction of the bending direction of described arcuation body (81) for the benefit of gas flow exhaust outlet (10), the axial tail end of air baffle ring is fixedly installed on the inwall of casing (1), its axial forward end is free end, and the axial forward end of air baffle ring (8) is concordant with front wheel disc tail end (411) or be positioned at the axial forward end of front wheel disc tail end (411).
2. blower fan according to claim 1, is characterized in that, described air baffle ring (8) also comprises the flat board (82) being connected to arcuation body (81) radially inner side and axial forward end.
3. blower fan according to claim 1, is characterized in that, the free end of air baffle ring is concordant in the axial direction with the tail end of front wheel disc (41), and the two is diametrically at a distance of 1 ~ 2mm.
4. blower fan according to claim 1, is characterized in that, described motor support cylinder (7) is the cone cylinder that front end is large, tail end is little, and cone cylinder sidewall and axis angle are 6 ~ 10 °.
5. blower fan according to claim 1, is characterized in that, stator exit installation angle is 85 ° ~ 87 °.
6. blower fan according to claim 1, is characterized in that, described motor (1) is connected through flange arrangement with the front end of motor support cylinder (5).
7. one kind as the application of blower fan as described in any one in claim 1 ~ 6 in cooling rail locomotive traction electric machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510801414.9A CN105298877B (en) | 2015-11-19 | 2015-11-19 | A kind of centrifugal axial flow-type blower fan |
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| CN201510801414.9A CN105298877B (en) | 2015-11-19 | 2015-11-19 | A kind of centrifugal axial flow-type blower fan |
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| CN105298877A true CN105298877A (en) | 2016-02-03 |
| CN105298877B CN105298877B (en) | 2018-01-30 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989055A (en) * | 2017-02-28 | 2017-07-28 | 上海朗沁投资管理有限公司 | Centrifuge movable vane wheel, blade assembly and fan |
| JP2017192163A (en) * | 2016-04-11 | 2017-10-19 | 東芝三菱電機産業システム株式会社 | Totally-enclosed dynamo-electric machine |
| CN107725481A (en) * | 2017-10-10 | 2018-02-23 | 山东大学 | A kind of structure and method for improving centrifugal vapor compressor compression ratio |
| WO2018076510A1 (en) * | 2016-10-24 | 2018-05-03 | 北京小米移动软件有限公司 | Air purifier and air duct structure thereof |
| CN108591102A (en) * | 2018-06-14 | 2018-09-28 | 珠海格力电器股份有限公司 | Fan structure reaches air treatment equipment including it |
| CN111237215A (en) * | 2018-11-29 | 2020-06-05 | 曾固 | Large-flow high-full-pressure reloading centrifugal cross-flow fan |
| CN112377430A (en) * | 2020-12-08 | 2021-02-19 | 湖南联诚轨道装备有限公司 | Axial centrifugal fan with arc-shaped fixed blades |
| CN114483604A (en) * | 2021-12-06 | 2022-05-13 | 鑫磊压缩机股份有限公司 | Bidirectional flow-dividing impeller capable of guiding flow axially and radially |
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| CN201322006Y (en) * | 2008-12-10 | 2009-10-07 | 株洲联诚集团有限责任公司 | Axial-flow fan for electric locomotive inverter |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017192163A (en) * | 2016-04-11 | 2017-10-19 | 東芝三菱電機産業システム株式会社 | Totally-enclosed dynamo-electric machine |
| WO2018076510A1 (en) * | 2016-10-24 | 2018-05-03 | 北京小米移动软件有限公司 | Air purifier and air duct structure thereof |
| CN106989055A (en) * | 2017-02-28 | 2017-07-28 | 上海朗沁投资管理有限公司 | Centrifuge movable vane wheel, blade assembly and fan |
| CN107725481A (en) * | 2017-10-10 | 2018-02-23 | 山东大学 | A kind of structure and method for improving centrifugal vapor compressor compression ratio |
| CN107725481B (en) * | 2017-10-10 | 2024-05-17 | 山东大学 | Structure and method for improving compression ratio of centrifugal vapor compressor |
| CN108591102A (en) * | 2018-06-14 | 2018-09-28 | 珠海格力电器股份有限公司 | Fan structure reaches air treatment equipment including it |
| CN111237215A (en) * | 2018-11-29 | 2020-06-05 | 曾固 | Large-flow high-full-pressure reloading centrifugal cross-flow fan |
| CN111237216A (en) * | 2018-11-29 | 2020-06-05 | 曾固 | Centrifugal through-flow water navigation body propulsion device and application |
| CN111237213A (en) * | 2018-11-29 | 2020-06-05 | 曾固 | A fluid centrifugal through-flow device with an external drive source and a fan |
| CN112377430A (en) * | 2020-12-08 | 2021-02-19 | 湖南联诚轨道装备有限公司 | Axial centrifugal fan with arc-shaped fixed blades |
| CN114483604A (en) * | 2021-12-06 | 2022-05-13 | 鑫磊压缩机股份有限公司 | Bidirectional flow-dividing impeller capable of guiding flow axially and radially |
| CN114483604B (en) * | 2021-12-06 | 2023-10-27 | 鑫磊压缩机股份有限公司 | Bidirectional flow dividing impeller capable of axially and radially guiding flow |
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| CN105298877B (en) | 2018-01-30 |
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Address after: 412000 Hunan Province, Zhuzhou Shifeng District Tian Xin North Gate Applicant after: Zhuzhou Liancheng group Cmi Holdings Ltd Address before: 412001 Hunan Province, Zhuzhou Shifeng District Tian Xin North Gate Applicant before: Liancheng Group Co., Ltd., Zhuzhou |
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Effective date of registration: 20180802 Address after: 412000 Hunan Province, Zhuzhou Shifeng District Tian Xin North Gate Patentee after: Hunan Liancheng rail equipment Co., Ltd. Address before: 412000 Hunan Province, Zhuzhou Shifeng District Tian Xin North Gate Patentee before: Zhuzhou Liancheng group Cmi Holdings Ltd |