CN105179275A - Novel mixed flow pipeline fan - Google Patents
Novel mixed flow pipeline fan Download PDFInfo
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- CN105179275A CN105179275A CN201510619569.0A CN201510619569A CN105179275A CN 105179275 A CN105179275 A CN 105179275A CN 201510619569 A CN201510619569 A CN 201510619569A CN 105179275 A CN105179275 A CN 105179275A
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- mixed flow
- impeller
- new mixed
- venturi tube
- pipeline fan
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Abstract
The invention relates to a novel mixed flow pipeline fan widely applied to industrial and civil buildings such as the occasions of fire fighting smoke exhausting, common air feeding and exhausting of a high-rise building, air feeding and exhausting of an underground garage and concentrated air feeding of an air pipe. The novel mixed flow pipeline fan is connected with an air pipe system and comprises a cylindrical machine shell (5) with an air inlet and an air outlet, a streamline type inlet Venturi tube (1) installed on the cylindrical machine shell (5), and an impeller installed in the cylindrical machine shell (5) and driven by a motor (4), wherein the impeller is a novel mixed flow type impeller (2) formed by a conical front disc (21), three-dimensional curved-surface vanes (22) and a semispherical hub (23) in a welded mode. The conical front disc and the semispherical hub are creatively used, a runner is restrained in the whole course, the pneumatic performance is improved, turbulent flow and return flow are greatly reduced, air flow loss is avoided to the maximum extent, and part of noise is lowered.
Description
Technical field
Patent of the present invention relates to a kind of new mixed flow pipeline fan, is applicable to pipeline supply and exhaust.
Background technique
In industrial civilian projects application, flow-mixing blower fan extensively uses, as occasions such as fire control smoke exhausting, the common supply and exhaust of tall building, underground parking garage supply and exhaust, airduct consentrated air supply.
Mixed flow fan combines the feature of axial flow and centrifugal fan.Wind stress factor is higher than axial-flow blower, and flow coefficient is larger than centrifugal blower.Form primarily of shell, collection air port, the rotary blade arranged in the enclosure, impeller is driven by power mechanism and driving mechanism.
Now comparatively common common flow-mixing blower fan, in structure, efficiency etc., also there is shortcoming in it:
1. impeller is directly connected with muffling hole plate, and cause air intake to have some setbacks like this, static pressure efficiency is on the low side;
2. can produce to wad a quilt with cotton at the triangle zone of blade and orifice plate and flow, cause windage loss and noise;
3. impeller outer is along bigger than normal with avris shell sizes spacing, and such air-flow can reverse transmission, causes eddy current, thus causes windage loss.
Summary of the invention
The object of the invention is: provide a kind of new mixed flow pipeline fan, solves the general pipeline flow-mixing blower fan shortcoming that pressure is low, noise is high, efficiency is low, windage loss is large in civilian projects application.
Patent of the present invention solves the problems of the technologies described above taked technological scheme: a kind of new mixed flow pipeline fan, be connected with air-line system, comprise into and out of air port cylinder casing (5), the streamlined entrance Venturi tube be arranged on cylinder casing, to be arranged in cylinder casing by motor-driven impeller, wherein, the new mixed flow form impeller that described impeller is taper shroud, three-dimension curved surface blade, hemisphere type wheel hub three part are welded into.
The present invention uses new mixed flow form impeller to replace half mixed flow impeller welded with cone hub without shroud, prismatic blade or single curved blade of half flow-mixing blower fan use in the past.Taper shroud effectively can guide air-flow, and and size between avris shell reduce, at utmost avoid windage loss, reduce partial noise.
On such scheme basis, cylindrical shell airflow fence is welded with in described cylinder casing, described motor is contained in cylindrical shell airflow fence, Venturi tube is as intake grill, be sequentially Venturi tube, new mixed flow form impeller, cylindrical shell airflow fence, motor, make Venturi tube, new mixed flow form impeller coaxial with the center line of cylinder casing.
On such scheme basis, described three-dimension curved surface vane inside edge is along the circumferential direction fixedly welded on hemisphere type wheel hub, outer rim is along the circumferential direction fixedly welded on taper shroud, form closed type structure, wherein, described taper shroud is pre-small post-large taper type shroud, and this taper type shroud coordinates with streamlined Venturi tube.
Have employed taper type shroud and coordinate with streamlined Venturi tube of patent innovation of the present invention, it can effectively be come over and pledged allegiance to air-flow, avoids windage loss, reduces aerodynamic noise, improves static pressure efficiency and not easily transship.Under same rotational speed, reduce energy loss, improve air quantity and static pressure.Simultaneously because adopt this structure, do not need to increase entrance rectifier in addition in import, saved cost.
On such scheme basis, described cylindrical shell airflow fence is be provided with arc guide vane in the anterior outer rim of stream guiding barrel, motor mounting plate is established in the front end of stream guiding barrel, motor is fixed in stream guiding barrel by motor mounting plate, be connected with new mixed flow form impeller shaft by motor shaft, the swirling eddy at impeller rear portion is carried out water conservancy diversion by arc guide vane guide into, change axial motion into.Reduce turbulent flow, make part dynamic pressure be converted into static pressure, promote aeroperformance and fan efficiency, reduce noise.
On such scheme basis, described Venturi tube for be manufactured by spinning process, as the smooth intake grill of band streamline aerodynamic characteristic.Instead of the domestic tapered entrance rectifier generally adopted, air inlet is more evenly smooth and easy.
On the basis of such scheme, described taper shroud is through prod cast drawing craft integrated formed structure, described three-dimension curved surface blade is the shaping structure of stretched film drawing craft, and described hemisphere wheel hub is through hemisphere spinning block spinning process integrated formed structure.Due to described shroud, blade and wheel hub all one-body molded by mould and mutually closely welding be integrally formed, the precision-fit of shroud, blade and wheel hub, level and smooth change airflow direction, the aerodynamic noise of maskable part.
The beneficial effect of patent of the present invention is:
1) the taper shroud of new mixed flow form impeller effectively can guide air-flow, and and size between avris shell reduce, air-flow gently changes direction three times by taper shroud, three-dimension curved surface blade, hemisphere type wheel hub, effective guiding air-flow, avoid the loss of air-flow in transmission and change direction process to the full extent, maskable partial pneumatic noise;
2) make air inlet smoothly smooth and easy by Venturi tube;
3) swirling eddy at impeller rear portion is changed into axial motion through guide vane by cylindrical shell airflow fence.Reduce turbulent flow, make part dynamic pressure be converted into static pressure, promote aeroperformance and fan efficiency, reduce noise.
Accompanying drawing explanation
Fig. 1 is patent structure schematic diagram of the present invention;
Fig. 2 is the impeller generalized section of patent of the present invention;
Fig. 3 is the cylindrical shell airflow fence schematic diagram of patent of the present invention;
Fig. 4 is Fig. 3 schematic side view;
Number in the figure illustrates:
1---Venturi tube;
2---new mixed flow impeller; 21---taper shroud; 22---three-dimension curved surface blade; 23---hemisphere type wheel hub;
3---cylindrical shell airflow fence; 31---guide vane; 32---stream guiding barrel; 33---motor mounting plate;
4---motor;
5---cylinder casing.
Embodiment
If Fig. 1 is for shown in patent structure schematic diagram of the present invention:
A kind of new mixed flow pipeline fan, be connected with air-line system, comprise into and out of the cylinder casing 5 in air port, the streamlined entrance Venturi tube 1 be arranged on cylinder casing 5, be arranged on the impeller driven by motor 4 in cylinder casing 5, wherein, described impeller is the new mixed flow form impeller 2 be welded into by taper shroud 21, three-dimension curved surface blade 22, hemisphere type wheel hub 23 3 part.Replace in the past half flow-mixing blower fan use without shroud, half mixed flow impeller that prismatic blade or single curved blade weld with cone hub.Taper shroud effectively can guide air-flow, and and size between avris shell reduce, at utmost avoid windage loss, reduce partial noise.
Cylindrical shell airflow fence 3 is welded with in described cylinder casing 5, described motor 4 is arranged in cylindrical shell airflow fence 3, Venturi tube 1 is as intake grill, be sequentially Venturi tube 1, new mixed flow form impeller 2, cylindrical shell airflow fence 3, motor 4, make Venturi tube 1, new mixed flow form impeller 2 coaxial with the center line of cylinder casing 5.
Wherein, taper shroud 21 is through prod cast drawing craft integrated formed structure, and described three-dimension curved surface blade 22 is the shaping structure of stretched film drawing craft, and described hemisphere wheel hub 23 is through hemisphere spinning block spinning process integrated formed structure.Described new mixed flow form impeller 2, through CFD flow field simulation, makes impeller have the advantage of high efficiency, high static pressure, low noise.
Shown in the impeller generalized section of patent as of the present invention in Fig. 1 and Fig. 2, described three-dimension curved surface blade 22 inner edge is along the circumferential direction fixedly welded on hemisphere type wheel hub 23, outer rim is along the circumferential direction fixedly welded on taper shroud 21, form closed type structure, wherein, described taper shroud 21 is pre-small post-large taper type shroud, and this taper type shroud coordinates with streamlined Venturi tube.
The cylindrical shell airflow fence schematic diagram of patent as of the present invention in Fig. 1, Fig. 3 and Fig. 4 are for shown in Fig. 3 schematic side view, described cylindrical shell airflow fence 3 is be provided with arc guide vane 31 in the anterior outer rim of stream guiding barrel 32, motor mounting plate 33 is established in the front end of stream guiding barrel 32, motor 4 is fixed in stream guiding barrel 32 by motor mounting plate 33, be connected with new mixed flow form impeller 2 axle by motor shaft, the swirling eddy at impeller rear portion carried out water conservancy diversion by guide vane 31 and guides into and change axial motion into.Promote aeroperformance and fan efficiency, reduce noise.
Described Venturi tube 1 is manufactured by spinning process, as the smooth intake grill of band streamline aerodynamic characteristic.Replace the frustum that flow-mixing blower fan in the past uses, air inlet is more evenly smooth and easy.
The present invention innovatively uses taper shroud 21, hemisphere wheel hub 23 becomes real new mixed flow, and the constraint of runner whole process, promotes aeroperformance, significantly reduces turbulent flow and backflow.
Fairshaped Venturi tube is manufactured by spinning process, and replace the domestic tapered entrance rectifier generally adopted, air inlet is more evenly smooth and easy; Cylindrical shell airflow fence adopts arc guide vane, effectively the swirling eddy at impeller rear portion is carried out water conservancy diversion and guides axial motion into, reduces turbulent flow, makes part dynamic pressure be converted into static pressure, promotes aeroperformance and fan efficiency, reduces noise.
Claims (6)
1. a new mixed flow pipeline fan, be connected with air-line system, comprise into and out of air port cylinder casing (5), be arranged on streamlined entrance Venturi tube on cylinder casing (5) (1), be arranged on the impeller driven by motor (4) in cylinder casing (5), it is characterized in that, described impeller is taper shroud (21), new mixed flow form impeller (2) that three-dimension curved surface blade (22), hemisphere type wheel hub (23) three part are welded into.
2. new mixed flow pipeline fan according to claim 1, it is characterized in that: in described cylinder casing (5), be welded with cylindrical shell airflow fence (3), (4) described motor is arranged in cylindrical shell airflow fence (3), Venturi tube (1) is as intake grill, be sequentially Venturi tube (1), new mixed flow form impeller (2), cylindrical shell airflow fence (3), motor (4), make Venturi tube (1), new mixed flow form impeller (2) coaxial with cylinder casing center line (5).
3. new mixed flow pipeline fan according to claim 1 and 2, it is characterized in that: described three-dimension curved surface blade (22) inner edge is along the circumferential direction fixedly welded on hemisphere type wheel hub (23), outer rim is along the circumferential direction fixedly welded on taper shroud (21), form closed type structure, wherein, described taper shroud (21) is pre-small post-large taper type shroud, and this taper type shroud coordinates with streamlined Venturi tube.
4. new mixed flow pipeline fan according to claim 2, it is characterized in that, described cylindrical shell airflow fence is (3) for be provided with arc guide vane (31) in the anterior outer rim of stream guiding barrel (32), motor mounting plate (33) is established in the front end of stream guiding barrel (32), motor (4) is fixed in stream guiding barrel (32) by motor mounting plate (33), be connected with new mixed flow form impeller (2) axle by motor shaft, change the swirling eddy at impeller rear portion into axial motion by guide vane (31).
5. new mixed flow pipeline fan according to claim 1 and 2, is characterized in that, described Venturi tube (1) is manufactured by spinning process, as the smooth intake grill of band streamline aerodynamic characteristic.
6. new mixed flow pipeline fan according to claim 3, it is characterized in that, taper shroud (21) is through prod cast drawing craft integrated formed structure, the shaping structure that described three-dimension curved surface blade (22) is stretched film drawing craft, described hemisphere wheel hub (23) is through hemisphere spinning block spinning process integrated formed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510619569.0A CN105179275A (en) | 2015-09-25 | 2015-09-25 | Novel mixed flow pipeline fan |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510619569.0A CN105179275A (en) | 2015-09-25 | 2015-09-25 | Novel mixed flow pipeline fan |
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| CN105179275A true CN105179275A (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510619569.0A Pending CN105179275A (en) | 2015-09-25 | 2015-09-25 | Novel mixed flow pipeline fan |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756976A (en) * | 2016-04-29 | 2016-07-13 | 上海诺地乐通用设备制造有限公司 | Direct connection mixed flow fan |
| CN110374900A (en) * | 2019-08-09 | 2019-10-25 | 西安交通大学 | A kind of flow-mixing blower fan with sinusoidal pattern meridional channel |
| CN110374925A (en) * | 2019-08-09 | 2019-10-25 | 西安交通大学 | A kind of bilayer collector and the flow-mixing blower fan for assembling the double-deck collector |
| CN110513327A (en) * | 2018-05-22 | 2019-11-29 | 美的集团股份有限公司 | Diagonal flow fan and household appliance |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101349277A (en) * | 2008-09-05 | 2009-01-21 | 铁道部运输局 | Mixed flow fan |
| CN201475038U (en) * | 2009-09-03 | 2010-05-19 | 上海诺地乐通用设备制造有限公司 | Fully-mixed flow impeller |
| CN202579350U (en) * | 2012-05-25 | 2012-12-05 | 上虞市曹娥电机制造有限公司 | Mixed-flow fire-fighting smoke discharge ventilator |
| CN103307002A (en) * | 2013-06-04 | 2013-09-18 | 广东美的制冷设备有限公司 | Oblique flow blower |
| WO2014119813A1 (en) * | 2013-02-04 | 2014-08-07 | (주)토네이도테크 | Swirl-type fan ventilator |
-
2015
- 2015-09-25 CN CN201510619569.0A patent/CN105179275A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101349277A (en) * | 2008-09-05 | 2009-01-21 | 铁道部运输局 | Mixed flow fan |
| CN201475038U (en) * | 2009-09-03 | 2010-05-19 | 上海诺地乐通用设备制造有限公司 | Fully-mixed flow impeller |
| CN202579350U (en) * | 2012-05-25 | 2012-12-05 | 上虞市曹娥电机制造有限公司 | Mixed-flow fire-fighting smoke discharge ventilator |
| WO2014119813A1 (en) * | 2013-02-04 | 2014-08-07 | (주)토네이도테크 | Swirl-type fan ventilator |
| CN103307002A (en) * | 2013-06-04 | 2013-09-18 | 广东美的制冷设备有限公司 | Oblique flow blower |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756976A (en) * | 2016-04-29 | 2016-07-13 | 上海诺地乐通用设备制造有限公司 | Direct connection mixed flow fan |
| CN105756976B (en) * | 2016-04-29 | 2019-01-22 | 上海诺地乐通用设备制造有限公司 | A kind of direct connection flow-mixing blower fan |
| CN110513327A (en) * | 2018-05-22 | 2019-11-29 | 美的集团股份有限公司 | Diagonal flow fan and household appliance |
| CN110513327B (en) * | 2018-05-22 | 2021-03-02 | 美的集团股份有限公司 | Diagonal flow fan and household electrical appliance |
| CN110374900A (en) * | 2019-08-09 | 2019-10-25 | 西安交通大学 | A kind of flow-mixing blower fan with sinusoidal pattern meridional channel |
| CN110374925A (en) * | 2019-08-09 | 2019-10-25 | 西安交通大学 | A kind of bilayer collector and the flow-mixing blower fan for assembling the double-deck collector |
| CN110374925B (en) * | 2019-08-09 | 2021-03-12 | 西安交通大学 | Double-layer current collector and mixed flow fan assembled with same |
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| C06 | Publication | ||
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| CB02 | Change of applicant information |
Address after: 201806 Shanghai city Jiading District qingneng Road No. 55 Applicant after: Shanghai Nautilus General Equipment Manufacturing Co., Ltd. Address before: 201821 Shanghai City, Zhangpu Jiading District Juyuan Industrial Development Zone, Road No. 155 Applicant before: Shanghai Nautilus General Equipment Manufacturing Co., Ltd. |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151223 |
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| WD01 | Invention patent application deemed withdrawn after publication |