CN205190327U - Centrifugal fan impeller of adjustable splitterr vanes - Google Patents
Centrifugal fan impeller of adjustable splitterr vanes Download PDFInfo
- Publication number
- CN205190327U CN205190327U CN201521014146.8U CN201521014146U CN205190327U CN 205190327 U CN205190327 U CN 205190327U CN 201521014146 U CN201521014146 U CN 201521014146U CN 205190327 U CN205190327 U CN 205190327U
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- splitterr vanes
- fixing device
- splitterr
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Abstract
The utility model discloses a centrifugal fan impeller of adjustable splitterr vanes. Usually, the operating mode of working during present fan product uses is with rated condition and misfit, leads to the fact the fan availability factor low, also makes the high -efficient slew range of fan narrow down. The utility model discloses a direction ring is vice with the turnover of rim plate constitution, total mount is fixed on the rim plate, and is equipped with direction ring fixing device, the direction ring is connected with fixing device on the n splitterr vanes ring, splitterr vanes are covered fixing device with the wheel cap through the splitterr vanes wheel and are connected, pass through the splitterr vanes rim plate with the rim plate on fixing device be connected, on every splitterr vanes ring fixing device with correspond on the splitterr vanes rim plate fixing device and pass through the splitterr vanes regulating part and be connected. The utility model discloses a rotatory direction ring makes the splitterr vanes regulating part swing the angle of adjusting splitterr vanes, to the highest operating efficiency of different work condition acquisition, guarantees that centrifugal fan also can obtain the highest operating efficiency under the rated condition under non - rated condition.
Description
Technical field
The utility model belongs to Fan Equipment field, relates to centrifugal blower, is specifically related to a kind of Centrifugal Fan Impeller of adjustable splitterr vanes.
Background technique
The energy is economy, social development and uplift the people's living standard important substance basis.Energy problem is a vital problem of country.Since the nineties in last century, the contradiction between China's energy supply and demand continues to increase, and energy starved problem produces thereupon.According to investigations, blower fan electricity consumption accounts for 10% of national electricity consumption.The efficiency of national requirements blower fan must not lower than 70%, and the average operating efficiency of existing blower fan only has 40%-60%, the energy-saving potential of visible blower fan is very considerable, optimizes fan performance, improve operational efficiency, the stability strengthening fan operation has great importance.
Blower fan can be divided into centrifugal blower, axial-flow blower and flow-mixing blower fan three class usually, wherein the use amount of centrifugal blower is maximum, therefore, the operation that can centrifugal blower safe, reliable, efficient, in recent years always for fan design, manufacture, scientific research and use all departments pay close attention to jointly.Owing to there is impact of the comparatively large and air-flow viscosity of rotary component, impeller channel structural curvature etc., centrifugal blower inside presents very complicated three-dimensional non-steady flowing.The flow phenomenon of normal appearance mainly comprises separation, vortex, the separation of flow, tail etc., also often inevitably occurs secondary flow.The existence from start to finish under whole service operating mode of these unsteady complex flows, they are the roots causing centrifugal blower energy loss and noise to increase.
The application of blower fan is very extensive, as being applied in construction engineering, and underground engineering, the ventilation of boiler and air inducing, the dispatch of chemical plant high temperature corrosion gas, the aspects such as air conditioner ventilation.And all there is operating conditions and the unmatched problem of design condition in process industry and normal domestic blower fan.Although some Fan Products have higher operational efficiency under declared working condition, general work operating mode and declared working condition misfit in actual use.This not only causes blower fan utilization efficiency low, meanwhile, also makes blower fan Effec-tive Function scope narrow, then causes the stability problem of fan operation.And the place conditions of demand of blower fan application are very various, if design corresponding blower fan for the traffic demand in the place of application-specific blower fan for declared working condition, be difficult to accomplish volume production.A large amount of design studies confirms, adopts splitterr vanes blade can be made to block at inducer and reduces, improve the through-current capability of impeller.Rationally arranging splitterr vanes can make centrifugal blower best efficiency point can not reduce peak efficiency toward large discharge or low flow rate condition skew, even smallly can must improve peak efficiency.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, a kind of Centrifugal Fan Impeller of adjustable splitterr vanes is provided, adopt splitterr vanes blade can be made to block at inducer to reduce, improve the through-current capability of impeller, and splitterr vanes controlling device can regulate the angle of splitterr vanes.
The purpose of this utility model is realized by following technical proposals:
The utility model comprises wheel disc, wheel cap, primary blades, splitterr vanes and splitterr vanes controlling device; The n sheet primary blades be uniformly distributed along the circumference is fixedly installed, n >=8 between described wheel disc and wheel cap; Between every adjacent two panels primary blades, a slice splitterr vanes are set; Described splitterr vanes controlling device comprises fixing device, splitterr vanes adjusting element, splitterr vanes wheel on total fixing frame, guiding annulus, splitterr vanes annulus and covers fixing device on fixing device and splitterr vanes wheel disc; The turnover pair that it is running shaft that described guiding annulus and wheel disc form with wheel disc central shaft; Described total fixing frame is fixed on wheel disc, and is provided with guiding annulus fixing device; Guiding annulus is connected with fixing device on n splitterr vanes annulus being uniformly distributed along the circumference; Described splitterr vanes and wheel cap are taken turns by splitterr vanes and are covered fixing device and be connected, and are connected by fixing device on splitterr vanes wheel disc with wheel disc; On each splitterr vanes annulus, fixing device is connected by splitterr vanes adjusting element with fixing device on a corresponding splitterr vanes wheel disc.
The length of described splitterr vanes is less than the length of primary blades; Splitterr vanes are reduced to trailing edge vane thickness gradually by leading edge.
Described guiding annulus fixing device is clamping slot; Guiding annulus embeds in clamping slot, and clamping slot is provided with the bolt of clamping guiding annulus.
Described splitterr vanes wheel covers fixing device on fixing device and splitterr vanes wheel disc and is nut and countersunk screw matching fastener; The both sides of splitterr vanes embed splitterr vanes wheel respectively and cover in the countersunk screw counter sink of fixing device on fixing device and splitterr vanes wheel disc.On splitterr vanes annulus, fixing device is nuts and bolt matching fastener.Described splitterr vanes adjusting element is an adjustable lever; One end of adjustable lever is fixed on the bolt shank of countersunk screw in fixing device on splitterr vanes wheel disc, and the regulating tank that the other end is offered is nested with on the bolt shank of fixing device on splitterr vanes annulus.
The flute length of described regulating tank is 2 times of the bolt shank diameter of fixing device on splitterr vanes annulus.
The utility model compared with prior art tool has the following advantages:
1, the utility model by arranging splitterr vanes in centrifugal blower, effectively can improve " jet-wake " structure of impeller outlet, thus improve flow field, reduce energy consumption, increase the stability and reliability run, the effect of noise abatement can also be reached to a certain extent; Improve the performance of centrifugal blower, meet people growing to the energy-conservation of blower fan and travelling comfort demand; The controlling device that splitterr vanes are corresponding, can effectively, regulate the angle of splitterr vanes neatly according to different duty requirements, ensure centrifugal blower under off rating, also can obtain declared working condition under the highest operational efficiency; For small centrifugal ventilation fan, long and short blade structure can obviously improve its manufacturability, replaces welding, can improve the Rigidity and strength of impeller with casting.
2, reasonably splitterr vanes circumferential position can delay the Fashion and Evolution of horizontal Secondary Flow, reduces blade suction surface diffusion degree, reduces intensity and the scope of impeller outlet tail.
3, the blocking at vane inlet place is reduced; Reduce the leaf road angle of flare to reduce separation losses; Reduce slip coefficient and improve acting ability.
4, splitterr vanes effectively can reduce the load of impeller individual blade, effectively improve the secondary flow phenomenon of impeller internal, make more low stagnation pressure fluid flowing be tending towards normal.
5, there is backflow and whirlpool in the impeller inlet blocking avoiding linear leaf number too much to cause and impeller channel.
6, take turns the separation of flow and boundary layer separation easily occur runner content position to add small leaf and will play the fluid near suction surface outlet and add merit effect, also just effectively prevent the producing and developing of the separation of flow.
7, between the blade of prophyll wheel, add small leaf, the fragmentation of the wake zone at impeller outlet place can be made, diminish, reduce blower fan loss with this, improve the stability in blower fan flow field.
Accompanying drawing explanation
Fig. 1 is overall structure stereogram of the present utility model;
Fig. 2 is the distribution schematic diagram of primary blades and splitterr vanes in the utility model;
Fig. 3 is the schematic diagram of splitterr vanes controlling device in the utility model;
Fig. 4 is the structural representation of splitterr vanes in the utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As illustrated in fig. 1 and 2, the Centrifugal Fan Impeller of adjustable splitterr vanes, comprises wheel disc 1, wheel cap 2, primary blades 3, splitterr vanes 4 and splitterr vanes controlling device 5.The n sheet primary blades 3, n >=8 be uniformly distributed along the circumference is fixedly installed between wheel disc 1 and wheel cap 2; Between every adjacent two panels primary blades 3, a slice splitterr vanes 4 are set; Splitterr vanes controlling device 5 is for regulating splitterr vanes 4 angle.
As shown in Figure 3, splitterr vanes controlling device 5 comprises fixing device 5-3, splitterr vanes adjusting element 5-4, splitterr vanes wheel on total fixing frame 5-1, guiding annulus 5-2, splitterr vanes annulus and covers fixing device 5-6 on fixing device 5-5 and splitterr vanes wheel disc.The turnover pair that it is running shaft that guiding annulus 5-2 and wheel disc 1 form with wheel disc central shaft; Total fixing frame 5-1 is fixed on wheel disc 1, and is provided with guiding annulus fixing device.Guiding annulus 5-2 is connected with fixing device 5-3 on n splitterr vanes annulus being uniformly distributed along the circumference; Splitterr vanes 4 and wheel cap 2 are taken turns by splitterr vanes and are covered fixing device 5-5 and be connected, and are connected by fixing device 5-6 on splitterr vanes wheel disc with wheel disc 1; On each splitterr vanes annulus, fixing device 5-3 is connected by splitterr vanes adjusting element 5-4 with fixing device 5-6 on a corresponding splitterr vanes wheel disc.
Guiding annulus fixing device is clamping slot; Guiding annulus 5-2 embeds in clamping slot, and the bolt tightened on clamping slot can fixed guide annulus 5-2.
Splitterr vanes wheel covers fixing device 5-6 on fixing device 5-5 and splitterr vanes wheel disc and is nut and countersunk screw matching fastener; The both sides of splitterr vanes 4 embed splitterr vanes wheel respectively and cover in the countersunk screw counter sink of fixing device 5-6 on fixing device 5-5 and splitterr vanes wheel disc.On splitterr vanes annulus, fixing device 5-3 is nuts and bolt matching fastener.Splitterr vanes adjusting element 5-4 is an adjustable lever; One end of adjustable lever is fixed on the bolt shank of countersunk screw in fixing device 5-6 on splitterr vanes wheel disc, and the regulating tank that the other end is offered is nested with on the bolt shank of fixing device 5-3 on splitterr vanes annulus; The flute length of regulating tank is 2 times of the bolt shank diameter of fixing device 5-3 on splitterr vanes annulus.
As shown in Figures 2 and 4, the length of splitterr vanes is less than the length of primary blades 3; Splitterr vanes are reduced to trailing edge vane thickness gradually by leading edge.
The Centrifugal Fan Impeller of these adjustable splitterr vanes, working principle is as follows:
Regulate the angle of splitterr vanes according to the different working condition requirements of centrifugal blower, thus obtain the highest operational efficiency for different working condition requirements, the highest operational efficiency here refers to the efficiency of this centrifugal blower at declared working condition point.That is the existence of splitterr vanes controlling device can ensure this centrifugal blower under off rating, also can obtain declared working condition under the highest operational efficiency, thus realize preferably expanding steady effect.
As shown in Figure 3, can require by rotary steering annulus 5-2 according to Running Performance of Centrifugal Ventilators, splitterr vanes adjusting element 5-4 swings with guiding annulus 5-2 thus regulates the angle of splitterr vanes.After splitterr vanes angle requires adjustment according to Running Performance of Centrifugal Ventilators, first by total fixing frame 5-1 fixed guide annulus 5-2, then fixed by the splitterr vanes of correspondence by the nut of fixing device 5-3 on each splitterr vanes annulus, the splitterr vanes of correspondence are fixed by nut further that cover fixing device 5-5 finally by splitterr vanes wheel.
Add splitterr vanes 4 between adjacent primary blade 3, the fragmentation of the wake zone at impeller outlet place can be made, diminish, reduce blower fan loss with this, improve the stability in blower fan flow field.
Splitterr vanes can reduce the obstruction at blade inlet place; Reduce the leaf road angle of flare to reduce separation losses, reduce slip coefficient and improve acting ability.For backward impeller, under certain number of blade, the length reduction of short blade can make best efficiency point move to small flow direction; Short blade is mounted opposite the change at angle, and comparatively large to pressure influence, being particularly mounted opposite angle is timing, and the amplitude that pressure reduces is very large; Be mounted opposite the impact of angle on efficiency less, but change best efficiency point, make it move to small flow direction.So can obtain the highest operational efficiency for different working condition requirements, the highest operational efficiency here refers to the efficiency of this centrifugal blower at declared working condition point.That is the existence of splitterr vanes controlling device can ensure centrifugal blower under off rating, also can obtain declared working condition under the highest operational efficiency, thus realize preferably expanding steady effect.
Claims (5)
1. the Centrifugal Fan Impeller of adjustable splitterr vanes, comprises wheel disc, wheel cap, primary blades and splitterr vanes, it is characterized in that: also comprise splitterr vanes controlling device; The n sheet primary blades be uniformly distributed along the circumference is fixedly installed, n >=8 between described wheel disc and wheel cap; Between every adjacent two panels primary blades, a slice splitterr vanes are set; Described splitterr vanes controlling device comprises fixing device, splitterr vanes adjusting element, splitterr vanes wheel on total fixing frame, guiding annulus, splitterr vanes annulus and covers fixing device on fixing device and splitterr vanes wheel disc; The turnover pair that it is running shaft that described guiding annulus and wheel disc form with wheel disc central shaft; Described total fixing frame is fixed on wheel disc, and is provided with guiding annulus fixing device; Guiding annulus is connected with fixing device on n splitterr vanes annulus being uniformly distributed along the circumference; Described splitterr vanes and wheel cap are taken turns by splitterr vanes and are covered fixing device and be connected, and are connected by fixing device on splitterr vanes wheel disc with wheel disc; On each splitterr vanes annulus, fixing device is connected by splitterr vanes adjusting element with fixing device on a corresponding splitterr vanes wheel disc.
2. the Centrifugal Fan Impeller of adjustable splitterr vanes according to claim 1, is characterized in that: the length of described splitterr vanes is less than the length of primary blades; Splitterr vanes are reduced to trailing edge vane thickness gradually by leading edge.
3. the Centrifugal Fan Impeller of adjustable splitterr vanes according to claim 1, is characterized in that: described guiding annulus fixing device is clamping slot; Guiding annulus embeds in clamping slot, and clamping slot is provided with the bolt of clamping guiding annulus.
4. the Centrifugal Fan Impeller of adjustable splitterr vanes according to claim 1, is characterized in that: described splitterr vanes wheel covers fixing device on fixing device and splitterr vanes wheel disc and is nut and countersunk screw matching fastener; The both sides of splitterr vanes embed splitterr vanes wheel respectively and cover in the countersunk screw counter sink of fixing device on fixing device and splitterr vanes wheel disc; On splitterr vanes annulus, fixing device is nuts and bolt matching fastener; Described splitterr vanes adjusting element is an adjustable lever; One end of adjustable lever is fixed on the bolt shank of countersunk screw in fixing device on splitterr vanes wheel disc, and the regulating tank that the other end is offered is nested with on the bolt shank of fixing device on splitterr vanes annulus.
5. the Centrifugal Fan Impeller of adjustable splitterr vanes according to claim 4, is characterized in that: the flute length of described regulating tank is 2 times of the bolt shank diameter of fixing device on splitterr vanes annulus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521014146.8U CN205190327U (en) | 2015-12-08 | 2015-12-08 | Centrifugal fan impeller of adjustable splitterr vanes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521014146.8U CN205190327U (en) | 2015-12-08 | 2015-12-08 | Centrifugal fan impeller of adjustable splitterr vanes |
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| Publication Number | Publication Date |
|---|---|
| CN205190327U true CN205190327U (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521014146.8U Withdrawn - After Issue CN205190327U (en) | 2015-12-08 | 2015-12-08 | Centrifugal fan impeller of adjustable splitterr vanes |
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| CN (1) | CN205190327U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332945A (en) * | 2015-12-08 | 2016-02-17 | 浙江理工大学 | Centrifugal fan impeller capable of adjusting splitting vanes |
| CN106438493A (en) * | 2016-08-31 | 2017-02-22 | 中车大连机车研究所有限公司 | Self-adaptive flow collector and centrifugal fan |
| CN108825542A (en) * | 2018-08-24 | 2018-11-16 | 珠海格力电器股份有限公司 | Cell structure and fan |
| CN109506296A (en) * | 2018-11-21 | 2019-03-22 | 珠海格力电器股份有限公司 | Through-flow fan blade, cross flow fan and air conditioner |
| CN110524474A (en) * | 2019-07-17 | 2019-12-03 | 宁波市三羊机电制造有限公司 | A kind of guide wheel installation mold |
| CN111946664A (en) * | 2020-09-16 | 2020-11-17 | 台州学院 | Centrifugal fan blade with slotting structure |
| CN112682354A (en) * | 2020-12-18 | 2021-04-20 | 山东省章丘鼓风机股份有限公司 | Guide adjusting type sealing fan |
-
2015
- 2015-12-08 CN CN201521014146.8U patent/CN205190327U/en not_active Withdrawn - After Issue
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332945A (en) * | 2015-12-08 | 2016-02-17 | 浙江理工大学 | Centrifugal fan impeller capable of adjusting splitting vanes |
| CN105332945B (en) * | 2015-12-08 | 2017-07-28 | 浙江理工大学 | A kind of Centrifugal Fan Impeller of adjustable splitterr vanes |
| CN106438493A (en) * | 2016-08-31 | 2017-02-22 | 中车大连机车研究所有限公司 | Self-adaptive flow collector and centrifugal fan |
| CN106438493B (en) * | 2016-08-31 | 2019-07-16 | 中车大连机车研究所有限公司 | Adaptive collector and centrifugal blower |
| CN108825542A (en) * | 2018-08-24 | 2018-11-16 | 珠海格力电器股份有限公司 | Cell structure and fan |
| CN109506296A (en) * | 2018-11-21 | 2019-03-22 | 珠海格力电器股份有限公司 | Through-flow fan blade, cross flow fan and air conditioner |
| CN110524474A (en) * | 2019-07-17 | 2019-12-03 | 宁波市三羊机电制造有限公司 | A kind of guide wheel installation mold |
| CN111946664A (en) * | 2020-09-16 | 2020-11-17 | 台州学院 | Centrifugal fan blade with slotting structure |
| CN111946664B (en) * | 2020-09-16 | 2022-03-15 | 台州学院 | Centrifugal fan blade with slotting structure |
| CN112682354A (en) * | 2020-12-18 | 2021-04-20 | 山东省章丘鼓风机股份有限公司 | Guide adjusting type sealing fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160427 Effective date of abandoning: 20170728 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20160427 Effective date of abandoning: 20170728 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |