CN102322432A - Centrifugal-axial flow combined blower fan - Google Patents
Centrifugal-axial flow combined blower fan Download PDFInfo
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- CN102322432A CN102322432A CN201110303523A CN201110303523A CN102322432A CN 102322432 A CN102322432 A CN 102322432A CN 201110303523 A CN201110303523 A CN 201110303523A CN 201110303523 A CN201110303523 A CN 201110303523A CN 102322432 A CN102322432 A CN 102322432A
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Abstract
The invention discloses a centrifugal-axial flow combined blower fan used for a wind power fire-extinguisher used on grassland, belonging to the design field of a wind power fire-extinguisher used on grassland. According to the centrifugal-axial flow combined blower fan disclosed by the invention, a centrifugal blower fan and an axial-flow blower fan are respectively driven through two shafts with independently-adjustable rotating speed, the optimized matching of properties of the centrifugal blower fan and the axial-flow blower fan can be realized, besides air sucked through a suction force generated by the centrifugal blower fan due to self-rotation, additional air is sucked by the axial-flow blower fan through rotation, so that the problems of small flow quantity, low air pressure at an outlet, low efficiency and the like of the centrifugal blower fan are solved, and at the same time, different rotating speed combination can be flexibly selected according to different operating conditions of the wind power fire-extinguisher so as to realize efficient, quick and optimized fire-extinguishing of the grassland.
Description
Technical field
The invention belongs to grassland Pneumatic extinguisher design field, be specifically related to a kind of grassland Pneumatic extinguisher with centrifugal axial flow combined fan.
Background technique
Grassland resources is maximum, the main territorial resources of area in China's agricultural natural resource.The grassland has very big value, except that having the economic value that raise livestock increases herdsman's income, also have check winds and fix drifting sand, purify air, water conservation, the multiple ecological value such as prevent erosion, preserve the ecological environment.Prairie fire is a key factor that influences grassland ecology and development.Since founding the state, only grass fire just take place more than 50,000 time in the pastoral area, and the disaster-stricken meadow of accumulative total area reaches more than 200,000,000 hectare, causes more than 600 hundred million yuan of economic losses, reaches more than 10 hundred million yuan every year on average.In conjunction with the actual conditions of China, what main employing was put out a fire on the grassland, forest zone is small-sized 6MF series Pneumatic extinguisher.But all there is the problem that flow is less than normal, working efficiency is not high in these small-sized fire extinguishers.
The grassland Pneumatic extinguisher mainly is made up of two-part: motor and centrifugal blower.Centrifugal blower produces high velocity air and then blows out flare through the engine drives impeller, and motor is generally selected two-stroke gasoline engine.Because centrifugal blower fan blade wheel and spiral case manufacturing process cost are higher, only improve fan performance the Pneumatic extinguisher price is raise from these aspects, be difficult to accepted, and potentiality are little by market.
Summary of the invention
The object of the present invention is to provide a kind of centrifugal axial flow combined fan, the existing Pneumatic extinguisher of solution is less with the centrifugal blower flow, the outlet blast is low, efficient is lower, the cost problem of higher.
A kind of centrifugal axial flow combined fan, impeller 8 inside are provided with import drainage hood 9, and axial-flow blower is made up of axial blade 10 and wheel hub 11; Be positioned at impeller 8 import front ends, use the nut 13 and the shaft shoulder to carry out axially locating, centrifugal blower live axle 3 is connected with belt pulley 2 through flat key 12; Belt pulley 2 is fixed on the centrifugal blower live axle 3 through the shaft shoulder and circlip 17, and motor power is passed to centrifugal blower live axle 3 through belt pulley 2, and motor is connected with axial-flow blower live axle 1 through belt; Axial-flow blower live axle 1 is a real axis; Link to each other with centrifugal blower live axle 3 with deep groove ball bearing 20, centrifugal blower live axle 3 is a hollow shaft, is fastenedly connected through bolt 16 with impeller 8; And be connected with flange plate 6 with bearing support 5 respectively through double deep groove ball bearing 19; One end of double deep groove ball bearing 19 is through pad 18 and bearing (ball) cover 4 axially locating, and the other end is through circlip 17 location, and spiral case 7 is through being bolted on the flange plate 6; The front end of spiral case 7 is connected with safety cover 14 through bolt, and bearing support 5 and flange plate 6 are through being bolted on the support 15.
Said import drainage hood 9 is fairshaped conical shell, is processed by self-lubricate polymer.
Said self-lubricate polymer is PVC, polyethylene, ultra-high molecular weight polyethylene or teflon.
Said bearing 20 Internal and external cycles are all rotatable.
Beneficial effect of the present invention: centrifugal axial flow Combinatorial Optimization blower fan uses the independent two adjustable axles of rotating speed to drive centrifugal blower and axial-flow blower respectively; Can realize the optimization of matching of centrifugal blower and axial-flow blower characteristic well; Make centrifugal blower except self rotates the gas that produces the suction suction; Suck extra gas by the axial-flow blower rotation in addition, solved problems such as the centrifugal blower flow is little, the outlet blast is low, and efficient is low; Can select the different rotating speed combination flexibly for use according to the difference of Pneumatic extinguisher applying working condition simultaneously, realize efficient, quick and the fire extinguishing of optimization grassland.
Description of drawings
Fig. 1 is centrifugal axial flow Combinatorial Optimization blower fan assembling schematic representation;
Fig. 2 is a centrifugal blower import drainage hood structural representation;
Fig. 3 is the axial-flow blower structural representation;
Among the figure, 1-axial-flow blower live axle, 2-belt pulley, 3-centrifugal blower live axle, 4-bearing (ball) cover, 5-bearing support, 6-flange plate, 7-spiral case, 8-impeller, 9-import drainage hood, 10-axial blade, 11-wheel hub, 12-flat key, 13-nut, 14-safety cover, 15-support, 16-bolt, 17-circlip, 18-pad, the double deep groove ball bearing of 19-, 20-deep groove ball bearing.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is further specified.
Embodiment 1
The centrifugal axial flow combined fan of present embodiment, as shown in Figure 1, impeller 8 inside are provided with import drainage hood 9; Axial-flow blower is made up of axial blade 10 and wheel hub 11, is positioned at impeller 8 import front ends, uses the nut 13 and the shaft shoulder to carry out axially locating; Power reaches axial-flow blower live axle 1 through belt pulley 2, and is passed to axial-flow blower through axial-flow blower live axle 1 and flat key 12, drives its rotation; Centrifugal blower live axle 3 is connected with belt pulley 2 through flat key 12, and belt pulley 2 is fixed on the centrifugal blower live axle 3 through the shaft shoulder and circlip 17, and motor power is passed to centrifugal blower live axle 3 through belt pulley 2; Motor is connected with axial-flow blower live axle 1 through belt, and axial-flow blower live axle 1 is a real axis, links to each other with centrifugal blower live axle 3 with deep groove ball bearing 20; Bearing 20 Internal and external cycles are all rotatable, and centrifugal blower live axle 3 is a hollow shaft, is fastenedly connected through bolt 16 with impeller 8; And be connected with flange plate 6 with bearing support 5 respectively through double deep groove ball bearing 19; One end of double deep groove ball bearing 19 is through pad 18 and bearing (ball) cover 4 axially locating, and the other end is through circlip 17 location, and spiral case 7 is through being bolted on the flange plate 6; The front end of spiral case 7 is connected with safety cover 14 through bolt, and bearing support 5 and flange plate 6 are through being bolted on the support 15;
Import drainage hood 9 is fairshaped conical shell, is processed by PVC, has less friction factor, through the axial-flow blower inhaled air, is imported in each blade passage (as shown in Figure 2) by import drainage hood 9.
By motivational drive, this power rotating speed is higher than the rotating speed of centrifugal blower fan blade wheel axle to axial-flow blower at impeller 8 import front ends, and axial-flow blower utilizes the rotation of axial blade 10, has increased amount of air drawn (as shown in Figure 3).
Claims (4)
1. a centrifugal axial flow combined fan is characterized in that, impeller (8) inside is provided with import drainage hood (9); Axial-flow blower is made up of axial blade (10) and wheel hub (11), is positioned at impeller (8) import front end, uses the nut (13) and the shaft shoulder to carry out axially locating; Centrifugal blower live axle (3) is connected with belt pulley (2) through flat key (12); Belt pulley (2) is fixed on the centrifugal blower live axle (3) through the shaft shoulder and circlip (17), and motor power is passed to centrifugal blower live axle (3) through belt pulley (2), and motor is connected with axial-flow blower live axle (1) through belt; Axial-flow blower live axle (1) is a solid shaft; Link to each other with centrifugal blower live axle (3) with deep groove ball bearing (20), centrifugal blower live axle (3) is a hollow shaft, is fastenedly connected through bolt (16) with impeller (8); And be connected with flange plate (6) with bearing support (5) respectively through double deep groove ball bearing (19); One end of double deep groove ball bearing (19) is through pad (18) and bearing (ball) cover (4) axially locating, and the other end is through circlip (17) location, and spiral case (7) is through being bolted on the flange plate (6); The front end of spiral case (7) is connected with safety cover (14) through bolt, and bearing support (5) and flange plate (6) are through being bolted on the support (15).
2. according to the said a kind of centrifugal axial flow combined fan of claim 1, it is characterized in that said import drainage hood (9) is fairshaped conical shell, is processed by self-lubricate polymer.
3. according to the said a kind of centrifugal axial flow combined fan of claim 2, it is characterized in that said self-lubricate polymer is PVC, polyethylene, ultra-high molecular weight polyethylene or teflon.
4. according to the said a kind of centrifugal axial flow combined fan of claim 1, it is characterized in that said bearing (20) Internal and external cycle is all rotatable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110303523.XA CN102322432B (en) | 2011-10-09 | 2011-10-09 | Centrifugal-axial flow combined blower fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110303523.XA CN102322432B (en) | 2011-10-09 | 2011-10-09 | Centrifugal-axial flow combined blower fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102322432A true CN102322432A (en) | 2012-01-18 |
| CN102322432B CN102322432B (en) | 2014-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110303523.XA Expired - Fee Related CN102322432B (en) | 2011-10-09 | 2011-10-09 | Centrifugal-axial flow combined blower fan |
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| CN (1) | CN102322432B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603827A (en) * | 2013-11-20 | 2014-02-26 | 常山卫邦风机有限公司 | Centrifugal fan impeller structure and production method |
| CN104405667A (en) * | 2014-11-20 | 2015-03-11 | 珠海格力电器股份有限公司 | Air draft device and range hood |
| CN106286339A (en) * | 2015-06-10 | 2017-01-04 | 联想(北京)有限公司 | composite fan, electronic equipment and information processing method |
| CN106402001A (en) * | 2016-10-17 | 2017-02-15 | 宁波方太厨具有限公司 | Fan power system |
| CN110439839A (en) * | 2019-08-23 | 2019-11-12 | 珠海格力电器股份有限公司 | Combined fan |
| CN111237219A (en) * | 2020-01-15 | 2020-06-05 | 武汉市研华智造环保科技有限公司 | Vortex fan of convenient maintenance |
| CN113685365A (en) * | 2021-10-25 | 2021-11-23 | 宁波佳音机电科技股份有限公司 | Air extracting pump |
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| US4352635A (en) * | 1980-07-16 | 1982-10-05 | The Trane Company | Multi-speed fan assembly |
| JPS5888498A (en) * | 1981-11-21 | 1983-05-26 | Mitsuya Soufuuki Seisakusho:Kk | Inverted axial-flow fan equipped with variable pitch blades |
| US5887576A (en) * | 1995-04-20 | 1999-03-30 | Wheeler, Jr.; Floyd James | Centrifugal air compressor |
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| US7029244B2 (en) * | 2002-04-04 | 2006-04-18 | Vortech Engineering, Inc. | High-speed, belt-driven industrial blower |
| CN200952479Y (en) * | 2006-09-28 | 2007-09-26 | 邹韬韵 | Bidirectional tube-axial fan |
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| WO2009021356A1 (en) * | 2007-08-13 | 2009-02-19 | Shenzhen Longgang Jinyixin Electronic Factory | Centrifugal air blower and fresh air device having the blower |
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2011
- 2011-10-09 CN CN201110303523.XA patent/CN102322432B/en not_active Expired - Fee Related
Patent Citations (9)
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|---|---|---|---|---|
| US4352635A (en) * | 1980-07-16 | 1982-10-05 | The Trane Company | Multi-speed fan assembly |
| JPS5888498A (en) * | 1981-11-21 | 1983-05-26 | Mitsuya Soufuuki Seisakusho:Kk | Inverted axial-flow fan equipped with variable pitch blades |
| US5887576A (en) * | 1995-04-20 | 1999-03-30 | Wheeler, Jr.; Floyd James | Centrifugal air compressor |
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| CN200968294Y (en) * | 2006-10-20 | 2007-10-31 | 陈耀乾 | Line-type centrifugal fan structure |
| WO2009021356A1 (en) * | 2007-08-13 | 2009-02-19 | Shenzhen Longgang Jinyixin Electronic Factory | Centrifugal air blower and fresh air device having the blower |
Non-Patent Citations (1)
| Title |
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| 汤楚宇 张小英 欧阳中和 罗海峰 方友祥 吴彬: "离心－轴流组合式清粮风机的试验研究", 《农业工程学报》, vol. 23, no. 10, 31 October 2007 (2007-10-31), pages 117 - 118 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603827A (en) * | 2013-11-20 | 2014-02-26 | 常山卫邦风机有限公司 | Centrifugal fan impeller structure and production method |
| CN104405667A (en) * | 2014-11-20 | 2015-03-11 | 珠海格力电器股份有限公司 | Air draft device and range hood |
| CN106286339A (en) * | 2015-06-10 | 2017-01-04 | 联想(北京)有限公司 | composite fan, electronic equipment and information processing method |
| CN106402001A (en) * | 2016-10-17 | 2017-02-15 | 宁波方太厨具有限公司 | Fan power system |
| CN106402001B (en) * | 2016-10-17 | 2018-11-20 | 宁波方太厨具有限公司 | A kind of blower dynamical system |
| CN110439839A (en) * | 2019-08-23 | 2019-11-12 | 珠海格力电器股份有限公司 | Combined fan |
| CN111237219A (en) * | 2020-01-15 | 2020-06-05 | 武汉市研华智造环保科技有限公司 | Vortex fan of convenient maintenance |
| CN111237219B (en) * | 2020-01-15 | 2021-01-26 | 陕西嘉惠嘉顺实业有限公司 | Vortex fan of convenient maintenance |
| CN113685365A (en) * | 2021-10-25 | 2021-11-23 | 宁波佳音机电科技股份有限公司 | Air extracting pump |
| CN113685365B (en) * | 2021-10-25 | 2022-01-18 | 宁波佳音机电科技股份有限公司 | Air extracting pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102322432B (en) | 2014-09-17 |
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