CN100523437C - Self-powered adsorption type fan/ air compressor - Google Patents
Self-powered adsorption type fan/ air compressor Download PDFInfo
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- CN100523437C CN100523437C CNB2007101338180A CN200710133818A CN100523437C CN 100523437 C CN100523437 C CN 100523437C CN B2007101338180 A CNB2007101338180 A CN B2007101338180A CN 200710133818 A CN200710133818 A CN 200710133818A CN 100523437 C CN100523437 C CN 100523437C
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- rotor
- low
- compressor
- centrifugal impeller
- pressure chamber
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 13
- 238000010521 absorption reaction Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 239000002344 surface layer Substances 0.000 abstract 3
- 238000000034 method Methods 0.000 description 7
- 230000000740 bleeding effect Effects 0.000 description 5
- 238000005247 gettering Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000003434 inspiratory effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
A self-prepared power absorption type fan/air compressor is provided, which belongs to the technical field of impeller machines. The compressor comprises a radome, a rotor with vanes and a wheel disk, a rotor shaft and a stator; the rotor vane and the lower circular wall are opened with air suction grooves/holes; the compressor is characterized in that: a low-pressure chamber is made behind the rotor wheel disk; the air suction holes/grooves are communicated with the rotary low-pressure chamber; a centrifugal impeller is arranged on the rotor shaft between the rotor and the stator; a circular cover plate is positioned on the rotor wheel disk in the rear part of the low-pressure chamber; the cover plate is used to form a low-pressure chamber body and make up into a centrifugal impeller flow channel. The invention has the advantages that: 1) Since it is not necessary to add an additional adsorption power device for auxiliary surface layers, the compressor structure is simple; 2) The auxiliary surface layers are not absorbed to eliminate through tops of the rotor vanes, and specific pressure of the centrifugal impeller is so high as to form a rather low pressure area in the low-pressure chamber. Therefore, the absorption effect for the auxiliary surface layers are perfect; 3) When revolution speed of the fan /air compressor is changed, air suction volume can be self-adapted to adjust accordingly.
Description
Technical field
The present invention relates to a kind of automatic absorption boundary layer fan/compressor, belong to impeller machinery technical field.
Background technique
In order to improve the fan/compressor performance, a kind of relatively valid approach is to adopt the boundary layer adsorption technology.Its method is by ring wall face fluting/hole on rotor blade, stator blade surface and up and down, from easy generation separated region (as changeing stator blade blade back and they and the angular region that constitutes of ring wall face up and down) low-momentum gas is extracted out, attenuate boundary layer, inhibition flow separation reduce flow losses.
2005, Merchant A and Jack L are at Journal of Turbomachinery periodical the 127th volume 43-50 page or leaf publish thesis " Experimental Investigation of a High Pressure Ratio Aspirated FanStage ", the design and experimental verification a single stage adsorption formula fan, its rotor pressure ratio reaches 3.4, level pressure ratio 3.0, and rate of air sucked in required is 3.5% of a fan inlet flow.This fan installs collection chamber additional on the casing outside, and air extractor links to each other with collection chamber; The rotor blade suction surface is opened the groove of bleeding, and the groove of bleeding exports in rotor blade blade tip end.Air extractor when operation, the blade suction surface boundary layer by the groove of bleeding, pass tip clearance, flow into collection chamber, taken away by air extractor.Adopt this method owing to have relative movement between rotor blade and the collection chamber, influence the blade surface effect of bleeding (particularly tip clearance time) greatly of groove of bleeding, and be difficult to realize that the ring wall face is bled under the rotor.U.S.'s granted patent (number of patent application: US5480284 in 1996; Grant number: US005480284A) propose a kind of rotor blade that adsorbs certainly, its basic thought is the centrifugal force that utilizes the rotor rotation to produce, and blade suction surface boundary layer fluid is thrown out from blade tip by the blade interior perforate.Adopt this method, the low centrifugal force hour inspiratory effects of, rotor speed big in the little obstruction of tip clearance all can be relatively poor.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, it is better to propose a kind of inspiratory effects, self-powered's adsorption type fan/compressor.
A kind of self-powered's adsorption type fan/compressor, form by cowling, rotor, rotor shaft, stator, wherein said rotor is made up of rotor blade and rotor disk, described rotor blade and following ring wall face are opened air-breathing groove/hole, it is characterized in that: have low-pressure cavity behind the described rotor disk, described air-breathing groove/hole is connected with this low-pressure cavity; On described rotor shaft, between described rotor and stator, centrifugal impeller is installed; Be positioned at the low-pressure cavity rear side on described rotor disk annular cover plate is housed, this cover plate is used to form the low-pressure cavity cavity, and constitutes the centrifugal impeller runner.
When fan/compressor was worked, centrifugal impeller also rotated with rotor shaft, extracted the gas in the low-pressure cavity, and entered in the axial clearance between rotor and the stator blade.The low-pressure cavity internal pressure descends, and suction port/groove inner fluid flows into low-pressure cavity, and is discharged by centrifugal impeller.Reach the purpose of absorbing boundary layer by centrifugal impeller thus.
This invention is characterised in that: 1), behind the active wheel wheel disc design one low-pressure cavity, be used to compile the boundary layer low-momentum gas of being absorbed; 2), active wheel and centrifugal impeller be coaxial, centrifugal impeller power is also provided by the motor that offers active wheel power, need not independently to bleed power plant; 3), on runner vane surface and wheel hub, open air-breathing groove or suction port and link to each other with low-pressure cavity, the boundary layer of absorption comes together in low-pressure cavity, is thrown away by centrifugal impeller and enters sprue; 4), the increase of fan/compressor flow requires gettering quantity to increase when the active wheel rotating speed increases, the centrifugal impeller rotating speed increases pressure ratio and flow increases simultaneously, adapts to the requirement that the active wheel gettering quantity increases just, realizes that therefore the self adaption of gettering quantity is regulated.
Self-powered's adsorption type fan/compressor structure that this invention proposed can be directly used in the fan/compressor design, improves its aeroperformance, and related gas compressor can be axial flow and also can be centrifugal.
This invention and present existing technology relatively have following advantage, 1), because the boundary layer absorption power plant that do not need to add are simple in structure; 2), boundary layer does not absorb by rotator tip and centrifugal impeller pressure ratio ambassador low-pressure cavity forms lower negative pressure, so boundary layer is absorbed effective; 3), when the fan/compressor rotation speed change, the gettering quantity self adaption is regulated.
Description of drawings
Fig. 1 is a single-stage self-powered adsorption type fan/compressor structural representation.
Fig. 2 centrifugal impeller schematic representation.
Fig. 3 adsorption type vane foil schematic representation.
Label title among Fig. 1: 1, fan/compressor housing, 2, cowling, 3, runner vane, 4, worker's wheel wheel disc, 5, the air-breathing groove of blade surface, 6, low-pressure cavity, 7, annular cover plate, 8, the centrifugal impeller blade, 9, the centrifugal impeller wheel disc, 10, casing in the stator, 11, stator blade, 12, screw, 13, nut, 14, nut, 15, pad, 16, flat key, 17, rotor shaft.
Label title among Fig. 3: 18, suction port in the blade.
Specific implementation method
Fig. 1 is self-powered's adsorption type fan/compressor schematic representation of the present invention, mainly is made up of following component.1, fan/compressor housing, 2, cowling, 3, runner vane, 4, active wheel wheel disc, 5, the air-breathing groove of blade surface, 6, low-pressure cavity, 7, annular cover plate, 8, the centrifugal impeller blade, 9, the centrifugal impeller wheel disc, 10, casing in the stator, 11, stator blade, 12, screw, 13, nut, 14, nut, 15, pad, 16, flat key, 17, rotor shaft, 18, suction port in the blade.
More than each component function as follows:
Fan/compressor housing 1: steering flow also is used to install stator blade 11.Cowling 2: adjust the charge air flow direction, reduce the air inlet flow losses.Runner vane 3: add merit to air-flow, improve gas pressure.Active wheel wheel disc 4: rotor blade is installed.The air-breathing groove 5 of blade surface: absorb blade surface low-momentum boundary layer.Low-pressure cavity 6: the low-momentum air stream on accompany surface that compiles absorption.Annular cover plate 7: cooperate the formation low-pressure cavity with cavity behind the rotor disk, cooperate with centrifugal impeller blade 8 to constitute the centrifugal impeller airflow path.Centrifugal impeller blade 8: discharge the low pressure intracavity gas.Centrifugal impeller wheel disc 9: be used to install the centrifugal impeller blade.Casing 10 in the stator: fixedly stator blade and formation centrifugal impeller airflow path.Stator blade 11: change airflow direction and improve stream pressure.Screw 12, nut 13: be used for that cowling and rotor disk are fixed, centrifugal impeller cover plate and rotor disk is fixed and runner vane and active wheel wheel disc are fixed.Nut 14, pad 15: the axial restraint that is used for rotor disk and rotor shaft.Flat key 16: be used for the fixing of rotor disk 4, centrifugal impeller wheel disc 9 and rotor shaft 17.Rotor shaft 17: the motor output power is passed to impeller of rotor and centrifugal impeller.Blade 18 on the centrifugal impeller: gas is added merit, with low pressure intracavity gas suction sprue.
The main parts size means of fixation.For the attached fan/compressor of self-powered's adsorption type shown in Figure 1, cowling 2 is fixed together with active wheel wheel disc 4 by screw 12 and nut 13, and together rotates with rotor.Runner vane adopts the dovetail groove on dove-tail form tenon and the wheel disc to fit into conduct to fixing; Adopt radial screw 12 and nut 13 to carry out axial restraint.Annular cover plate 7 adopts screw 12 and nut 13 to be fixed together with active wheel wheel disc 4, and together rotates with active wheel.Stator blade 11 can adopt welding or screw to be connected with casing 10 in fan/compressor housing 1 and the stator.Active wheel wheel disc 4 and centrifugal impeller wheel disc 9 all adopt flat key 16 to realize fixing with rotor shaft 17 sense of rotation; Adopt spiral shell spiral shell 14 and pad 15 and rotor shaft 17 to realize axial restraint.
To Fig. 3 the attached fan/compressor method of work of self-priming of the present invention is described below in conjunction with Fig. 1:
Fan/compressor active wheel and centrifugal impeller rotate under driven by motor.Centrifugal impeller rotates near the boundary layer gas the air-breathing groove (or hole) is sucked low-pressure cavity, flows to the centrifugal impeller runner again, is radially thrown away by the air outlet then and flows through axial clearance between active wheel and the stator, compiles with the main flow that flows through active wheel to enter the stator runner.Because it is the boundary layer flow of being absorbed is very little, also very little to the mobile influence of main flow.Adopt this boundary layer absorption method will flow through blade suction surface boundary layer low-momentum gas and absorb, can avoid or slow down flow separation, reach the effect that improves the fan/compressor aeroperformance.What this will further specify be: 1), can open air-breathing groove or suction port at blade suction surface and following ring wall face simultaneously in order to reach the effect of boundary layer absorption preferably; 3) centrifugal impeller pressure ratio high flow capacity is little, is applicable to as air-breathing power of the present invention; 3) design of centrifugal impeller geometric parameter (as: external diameter, width of blade etc.) mainly considers to need to produce great pressure reduction (pressure ratio) and gettering quantity requirement.
Claims (1)
1, a kind of self-powered's adsorption type fan/compressor, form by cowling, rotor, rotor shaft, stator, wherein said rotor is made up of rotor blade and rotor disk, described rotor blade and following ring wall face are opened air-breathing groove/hole, it is characterized in that: have low-pressure cavity behind the described rotor disk, described air-breathing groove/hole is connected with this low-pressure cavity; On described rotor shaft, between described rotor and stator, centrifugal impeller is installed; Be positioned at the low-pressure cavity rear side on described rotor disk annular cover plate is housed, this cover plate is used to form the low-pressure cavity cavity, and constitutes the centrifugal impeller runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101338180A CN100523437C (en) | 2007-10-09 | 2007-10-09 | Self-powered adsorption type fan/ air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101338180A CN100523437C (en) | 2007-10-09 | 2007-10-09 | Self-powered adsorption type fan/ air compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101139939A CN101139939A (en) | 2008-03-12 |
| CN100523437C true CN100523437C (en) | 2009-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101338180A Expired - Fee Related CN100523437C (en) | 2007-10-09 | 2007-10-09 | Self-powered adsorption type fan/ air compressor |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094850A (en) * | 2010-12-24 | 2011-06-15 | 北京航空航天大学 | Design method of circumferential discontinuously distributed entraining grooves of engine air system |
| CN102168685B (en) * | 2011-05-04 | 2012-11-21 | 南京航空航天大学 | Efficient self-powered aspirated fan/compressor and working method thereof |
| CN102213176B (en) * | 2011-05-30 | 2012-12-19 | 高志连 | Same-diameter impeller group working by using fluid power |
| CN102937067B (en) * | 2012-11-28 | 2015-06-24 | 高志连 | Gap line projecting surface hub of same-diameter impeller group |
| CN111663970B (en) * | 2019-03-06 | 2022-08-12 | 中国航发商用航空发动机有限责任公司 | Aircraft engine assembling method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2156133A (en) * | 1936-06-16 | 1939-04-25 | Theodore H Troller | Propeller |
| US5480284A (en) * | 1993-12-20 | 1996-01-02 | General Electric Company | Self bleeding rotor blade |
| US6203269B1 (en) * | 1999-02-25 | 2001-03-20 | United Technologies Corporation | Centrifugal air flow control |
| EP1630362A1 (en) * | 2004-08-23 | 2006-03-01 | Siemens Aktiengesellschaft | Steam turbine with extraction of steam through hollow stator vanes |
| CN101012838A (en) * | 2007-02-02 | 2007-08-08 | 清华大学 | Centrifugal compressor having vane jet orifice |
-
2007
- 2007-10-09 CN CNB2007101338180A patent/CN100523437C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2156133A (en) * | 1936-06-16 | 1939-04-25 | Theodore H Troller | Propeller |
| US5480284A (en) * | 1993-12-20 | 1996-01-02 | General Electric Company | Self bleeding rotor blade |
| US6203269B1 (en) * | 1999-02-25 | 2001-03-20 | United Technologies Corporation | Centrifugal air flow control |
| EP1630362A1 (en) * | 2004-08-23 | 2006-03-01 | Siemens Aktiengesellschaft | Steam turbine with extraction of steam through hollow stator vanes |
| CN101012838A (en) * | 2007-02-02 | 2007-08-08 | 清华大学 | Centrifugal compressor having vane jet orifice |
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|---|---|
| CN101139939A (en) | 2008-03-12 |
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Granted publication date: 20090805 Termination date: 20131009 |