CN105673559A - Efficient meridian acceleration axial flow fan with casing - Google Patents
Efficient meridian acceleration axial flow fan with casing Download PDFInfo
- Publication number
- CN105673559A CN105673559A CN201610226404.1A CN201610226404A CN105673559A CN 105673559 A CN105673559 A CN 105673559A CN 201610226404 A CN201610226404 A CN 201610226404A CN 105673559 A CN105673559 A CN 105673559A
- Authority
- CN
- China
- Prior art keywords
- air duct
- barrel
- air
- internal diameter
- efficient
- 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
-
- 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
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/545—Ducts
- F04D29/547—Ducts having a special shape in order to influence fluid flow
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to an efficient meridian acceleration axial flow fan with a casing. The efficient meridian acceleration axial flow fan comprises an air barrel, a motor, blades and a wind wheel. The wind wheel is a cone column, The air barrel is a tubular body of a trapezoidal structure, and in the airflow flow direction, the inner diameter of the front of the air barrel is larger than that of the rear of the air barrel, and the outer diameter of the blades is larger than the inner diameter of the rear of the air barrel and smaller than the inner diameter of the front of the air barrel. A collector is fixedly connected to the front end of the air barrel, and a flow guide barrel is connected to the rear end of the air barrel. The flow guide barrel is composed of an outer barrel body, an inner barrel body and guide vanes. The outer diameter of the front section of the inner barrel body is equal to the outer diameter of the rear end face of the wind wheel. A T-shaped support is arranged in the inner barrel body, the inner barrel body is fixedly connected with the motor through the T-shaped support, 13 radial flow guide vanes are evenly distributed between the inner barrel body and the outer barrel body, and the section of each flow guide vane is in a wing type. When airflow passes through a rotating impeller, blade top leakage is reduced, pressure is increased, the efficiency of the fan is improved, in addition, the airflow is rectified though the guide vanes in the flow guide barrel, and the efficiency of the fan is improved.
Description
Technical field
The present invention relates to a kind of meridian acceleration axial fan, particularly a kind of efficient meridian acceleration axial flow blower.
Background technology
Meridian acceleration axial fan is by impeller meridian plane streamline and axis oblique and gain the name, be a kind of form between centrifugal fan and axial fan, have the wide advantage of high pressure coefficient, working range of large discharge coefficient, high efficiency and the centrifugal fan of axial fan concurrently. As shown in Figure 1, existing meridian acceleration axial flow blower is made up of air duct 1, motor 6, wind wheel, fan blade 2, fixes several skew wind leaves 2 on wind wheel, and the interior sky of its air duct 1 is taper hole shape, and wind wheel cylindrical is cone bar shape.
The defect of this blower fan is: fan blade top urceolus diameter is identical with the urceolus top external diameter of fan blade exit portion, for ensureing that fan blade normally rotates, between fan blade and urceolus, have certain gap, between its fan blade and air duct, gap is larger conventionally, and it is larger that loss is revealed on leaf top.
Summary of the invention
The object of the invention is to overcome the defect of above-mentioned existence, a kind of efficient meridian acceleration axial flow blower with casing is provided.
For achieving the above object, technical scheme of the present invention is: a kind of efficient meridian acceleration axial flow blower with casing, comprise air duct, motor, fan blade, wind wheel, described wind wheel be shaped as a cone bar shape, air duct is the tubular body of trapezium structure, along air current flow direction, the anterior internal diameter of air duct is larger than air duct rear portion internal diameter, described fan blade external diameter is greater than air duct rear portion internal diameter, be less than the anterior internal diameter of air duct, air duct front end is fixedly connected with current collector, rear end connects guide shell, described guide shell is by urceolus, inner core, stator composition, described inner core leading portion external diameter equals wind wheel rear end face external diameter, inner core inside arranges a T shape support, and is fixedly connected with uniform 13 water conservancy diversion leaves radially between the inside and outside cylinder of motor by T shape support, and water conservancy diversion leaf cross section is aerofoil profile.
Large 8 millimeters than air duct rear portion internal diameter of the anterior internal diameters of described air duct. Described urceolus rear end face is established for connecting airduct or for being fixedly connected with the flange of blower fan.
Beneficial effect of the present invention is: air-flow is guided by current collector, has improved gas flow situation; Air-flow enters fan blade, and due to fan blade acting, air-flow velocity improves on the one hand, and blast increases, and on the other hand because circulation area reduces, air-flow velocity improves, and increases along meridional stream line air velocity, and impeller acting ability strengthens, and blast increases; Because air duct rear portion internal diameter is less than fan blade external diameter, stop the backflow of impeller outlet gases at high pressure along blade tip clearance, therefore can greatly reduce to reveal loss; Air-flow is guided into axial flow by stator in guide shell, and rear guide vane plays the effect of diffusion simultaneously, and the kinetic transformation that fan blade outlet is curled up to air-flow is recovered as the static pressure of air-flow, the total voltage rise that improves blower fan, and fan efficiency increases.
Brief description of the drawings
Fig. 1 is the structural representation of the meridian acceleration axial flow blower of prior art;
Fig. 2 is the structural representation of the efficient meridian acceleration axial flow blower with casing of the present invention;
Fig. 3 is the A place partial enlarged drawing in Fig. 2;
Fig. 4 is the cutaway view along B-B in Fig. 2.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figures 2 to 4, the efficient meridian acceleration axial flow blower with casing of the present invention, comprises that air duct 1, fan blade 2, water conservancy diversion leaf 5, motor 6, air-flow are by current collector 7, T shape support 8, wind wheel 9 etc.
Air duct 1 is shaped as a tubular body, wind wheel 9 be shaped as a cone bar shape, be provided with in addition the guide shell being formed by urceolus 4, inner core 3, stator 5, air duct 1 is trapezium structure, along air current flow direction, air duct 1 internal diameter is in different size, anterior 1 internal diameter of air duct is than large 8 millimeters of air duct 1 rear portion internal diameter, fan blade 2 external diameters are greater than air duct 1 rear portion internal diameter, fan blade 2 external diameters are less than the anterior internal diameter of air duct 1, air duct 1 front/rear end is respectively equipped with ring flange, and air duct 1 forward flange dish fixedly docks with current collector 7 ring flanges, and air duct 1 rear stub is fixedly connected with urceolus 4 ring flanges; Inner core 3 is a tubular body, and inner core 3 leading portion external diameters equal wind wheel rear end face external diameter; Inner core 3 inside are provided with a T shape support 8,8 four through holes of T shape support, and motor 6 is bolted to connection with T shape support 8; Uniform 13 water conservancy diversion leaves 5 radially between inner/outer tube, water conservancy diversion leaf 5 cross sections are aerofoil profile.
Air-flow is guided by current collector 7, has improved gas flow situation, has reduced import local losses. Air duct 1 front portion is tubular body, and wind wheel is expanding prick cylinder, and air-flow enters fan blade, and due to fan blade acting, air-flow velocity improves on the one hand, and blast increases, and on the other hand because axial annular circulation area reduces, air-flow velocity improves, and blast increases.
Found out by Fig. 3, air duct 1 rear portion internal diameter is less than fan blade 2 external diameters, has stopped that the airflow reflux in blade tip clearance flows, and has reduced leaf top and has revealed loss.
Water conservancy diversion leaf 5 is aerofoil section, and when airflow passes water conservancy diversion leaf 5, its direction is adjusted to axially, and stator plays the effect of diffusion simultaneously, and the kinetic transformation that fan blade outlet is curled up to air-flow is recovered as the static pressure of air-flow, the total voltage rise that improves blower fan, and fan efficiency increases. The adpting flange of urceolus 4 rear end faces for is connected with airduct or for fix blower fan.
Claims (3)
1. the efficient meridian acceleration axial flow blower with casing, comprise air duct (1), motor (6), fan blade (2), wind wheel (9), it is characterized in that: described wind wheel (9) be shaped as a cone bar shape, the tubular body that air duct (1) is trapezium structure, along air current flow direction, air duct front portion (1) internal diameter is larger than air duct (1) rear portion internal diameter, described fan blade (2) external diameter is greater than air duct (1) rear portion internal diameter, be less than the anterior internal diameter of air duct (1), air duct (1) front end is fixedly connected with current collector (7), rear end connects guide shell, described guide shell is by urceolus (4), inner core (3), stator (5) composition, described inner core (3) leading portion external diameter equals wind wheel rear end face external diameter, inner core (3) inside arranges a T shape support (8), and is fixedly connected with uniform 13 water conservancy diversion leaves (5) radially between the inside and outside cylinder of motor (6) (3,4) by T shape support (8), and water conservancy diversion leaf (5) cross section is aerofoil profile.
2. the efficient meridian acceleration axial flow blower with casing according to claim 1, is characterized in that: described air duct front portion (1) internal diameter is than large 8 millimeters of air duct (1) rear portion internal diameter.
3. the efficient meridian acceleration axial flow blower with casing according to claim 1, is characterized in that: described urceolus (4) rear end face is established for connecting airduct or for being fixedly connected with the flange of blower fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610226404.1A CN105673559B (en) | 2016-04-13 | 2016-04-13 | Efficient meridionally-accelerated axial flow fan with casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610226404.1A CN105673559B (en) | 2016-04-13 | 2016-04-13 | Efficient meridionally-accelerated axial flow fan with casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105673559A true CN105673559A (en) | 2016-06-15 |
| CN105673559B CN105673559B (en) | 2018-04-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610226404.1A Expired - Fee Related CN105673559B (en) | 2016-04-13 | 2016-04-13 | Efficient meridionally-accelerated axial flow fan with casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105673559B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224265A (en) * | 2016-08-24 | 2016-12-14 | 戴维峰 | Turbocharging cooling hair-dryer |
| CN109779948A (en) * | 2019-01-17 | 2019-05-21 | 沈阳航空航天大学 | It is a kind of for improving the plasma formula blade tip clearance encapsulating method of axial flow blower performance |
| CN110159564A (en) * | 2019-04-23 | 2019-08-23 | 贵州永红航空机械有限责任公司 | A kind of axial flow blower of low-specific-speed |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2038958U (en) * | 1988-10-15 | 1989-06-07 | 广东省韶关风机厂 | Axial flow type electric fan |
| CN2436701Y (en) * | 2000-04-16 | 2001-06-27 | 荣毅 | Bidirectional ventilator |
| CN201078341Y (en) * | 2007-09-03 | 2008-06-25 | 刘福祥 | High effective and low noise flame-proof type axial flow type local fan for mine |
| CN101398011A (en) * | 2007-09-25 | 2009-04-01 | 株式会社日立工业设备技术 | Movable vane type axial-flow pump |
| CN101576094A (en) * | 2008-05-07 | 2009-11-11 | 台达电子工业股份有限公司 | Fan and flow-guided structure thereof |
| US20110223013A1 (en) * | 2010-03-12 | 2011-09-15 | Michel Wlasowski | Reduced Monobloc Multistage Drum of Axial Compressor |
-
2016
- 2016-04-13 CN CN201610226404.1A patent/CN105673559B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2038958U (en) * | 1988-10-15 | 1989-06-07 | 广东省韶关风机厂 | Axial flow type electric fan |
| CN2436701Y (en) * | 2000-04-16 | 2001-06-27 | 荣毅 | Bidirectional ventilator |
| CN201078341Y (en) * | 2007-09-03 | 2008-06-25 | 刘福祥 | High effective and low noise flame-proof type axial flow type local fan for mine |
| CN101398011A (en) * | 2007-09-25 | 2009-04-01 | 株式会社日立工业设备技术 | Movable vane type axial-flow pump |
| CN101576094A (en) * | 2008-05-07 | 2009-11-11 | 台达电子工业股份有限公司 | Fan and flow-guided structure thereof |
| US20110223013A1 (en) * | 2010-03-12 | 2011-09-15 | Michel Wlasowski | Reduced Monobloc Multistage Drum of Axial Compressor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224265A (en) * | 2016-08-24 | 2016-12-14 | 戴维峰 | Turbocharging cooling hair-dryer |
| CN106224265B (en) * | 2016-08-24 | 2019-01-08 | 宁波高新区若水智创科技有限公司 | Turbocharging cooling hair dryer |
| CN109779948A (en) * | 2019-01-17 | 2019-05-21 | 沈阳航空航天大学 | It is a kind of for improving the plasma formula blade tip clearance encapsulating method of axial flow blower performance |
| CN110159564A (en) * | 2019-04-23 | 2019-08-23 | 贵州永红航空机械有限责任公司 | A kind of axial flow blower of low-specific-speed |
| CN110159564B (en) * | 2019-04-23 | 2020-06-19 | 贵州永红航空机械有限责任公司 | Axial flow fan with low specific speed |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105673559B (en) | 2018-04-06 |
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