CN110296102A - A kind of integrated fan propeller and blower, train of two-step supercharging - Google Patents
A kind of integrated fan propeller and blower, train of two-step supercharging Download PDFInfo
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- CN110296102A CN110296102A CN201810246291.0A CN201810246291A CN110296102A CN 110296102 A CN110296102 A CN 110296102A CN 201810246291 A CN201810246291 A CN 201810246291A CN 110296102 A CN110296102 A CN 110296102A
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- blade
- impeller
- airfoil
- fan
- blower
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Classifications
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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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
- F04D17/164—Multi-stage fans, e.g. for vacuum cleaners
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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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
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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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of integrated fan propeller of two-step supercharging, the impeller includes multiple blade groups, reel, hub disk and shroud, the reel peace group circular array distribution；Each blade group includes multiple airfoil fans, the first blade and the second blade, centered on the axis of the impeller, the disk of the hub disk is set as outer ring surface, middle anchor ring and inner ring surface from edge to center, multiple airfoil fans are distributed in outer ring surface, first blade is mounted on middle anchor ring and one end leaned on distributing position in multiple airfoil fans in an airfoil fan be connected, second blade is mounted on middle anchor ring and inner ring surface, and one end is connected with the airfoil fan that distributing position in multiple airfoil fans keeps to the side.Impeller of the invention has the characteristics that high-efficient, wind pressure is high, relative diameter is small, and high pressure, Wind Volume, feature small in size for plateau operation EMU needs can effectively meet the cooling requirement that plateau uses on train.
Description
Technical field
The present invention relates to the integrated fan propeller and blower of EMU blower field more particularly to a kind of two-step supercharging,
Train.
Background technique
China is vast in territory, and eastern and western regions height above sea level difference is big, causes the atmospheric pressure difference of various regions very big, highlands
Rarefaction of air, atmospheric pressure are low.Plateau is run on diesel locomotive, it is contemplated that atmospheric pressure is low, generally progress power adjustment, that is, drops
Power uses.But plateau in EMU, then it is general to require not dropping power use.
EMU does not drop power on plateau and uses, and the calorific value of each current consuming apparatus thereon is suitable with Plain.For adopting
Air-cooled equipment, such as traction electric machine etc. need to protect to guarantee that it can run steadily in the long term when plateau is run
It holds and it is cooled down with the air of Plain operation phase homogenous quantities flow.Since plateau atmospheric pressure is low, atmospheric density is small, phase
Homogenous quantities flow needs to provide the air of bigger volume flow, to ensure cooling effect.
From pipe network air drag empirical equation P=C+KQ2 (P: resistance of pipe system；C: pipe network additional drag, with air mass flow without
The amount of pass, including caused negative pressure when EMU operation；K: resistance of pipe system coefficient is only related to pipe network system；Q: cooling air
Volume flow) it is found that pipe network air drag and the volume flow of air is square directly proportional.In EMU behind plateau, need
Cooling air volume flow increases, and resistance of pipe system increases accordingly.
The equipment of air feed is usually blower in EMU.From fan characteristic it is found that in usable range, blower pressure is general
Increase with blower volume flow and reduces.And resistance of pipe system then increases with volume flow and is increased, the two is conflicting.In order to gram
Resistance of pipe system is taken, guarantees to supply enough cooling wind regimes to heat-producing device, needs to improve the wind pressure of blower significantly.But
It in EMU, is limited by bulk, blower shape does not allow to increase, and can only optimize blower scheme or improve revolving speed in fact
It is existing.It is most obvious to improve revolving speed effect, but needs using variable-frequency motor, cost dramatically increases；Power input frequency need to be changed simultaneously,
Motor-car set control system needs to redesign, and influences great.
Existing backward draught fan impeller, blade is single backward linear leaf, and each blade is uniformly distributed；There are also a small amount of
Backward draught fan impeller use deviated splitter vane, still, each deviated splitter vane is all unified is uniformly distributed.Existing multi-blade fan leaf
Wheel, to one kind of draught fan impeller after being, with very big back azimuth and very more blades.Typical backward draught fan impeller.
Backward draught fan impeller, maximum the disadvantage is that under the certain precondition of impeller size (outer diameter) and rotation speed of fan, the type impeller
Boosting capability it is minimum, blower pressure is low, is unable to reach technical requirement on design.
Shown in multi-blade fan impeller, major defect is the precondition certain in impeller size (outer diameter) and rotation speed of fan
Lower fan efficiency is low, high noise.Fan efficiency is low, needs the motor that mesh power is bigger, and leading to power is more than design requirement, and
Weight will also significantly increase (after power of motor increases, motor weight increases), cause overweight or competitiveless.
The art of this patent can improve after wind is mounted under the premise of meeting that outer dimension is constant, complete blower efficiency is comparable
The middle part of disk is fixed with multiple blade groups, multiple vane machine pressure, to meet EMU height between the hub disk and shroud
The Wind Volume requirement of original operation.
Summary of the invention
In view of this, an embodiment of the present invention is intended to provide a kind of integrated fan propeller of two-step supercharging, with showing for solution
There is at least one of technology technical problem.
In order to achieve the above objectives, the technical solution of the embodiment of the present invention is achieved in that a kind of one of two-step supercharging
Formula draught fan impeller, the impeller include multiple blade groups, reel, hub disk and shroud, the reel peace group circular array distribution；
Each blade group includes multiple airfoil fans, the first blade and the second blade, centered on the axis of the impeller, after described
The disk of disk is set as outer ring surface, middle anchor ring and inner ring surface from edge to center, and multiple airfoil fans are distributed in outer ring surface, institute
State the first blade be mounted on middle anchor ring and one end leaned on distributing position in multiple airfoil fans in an airfoil fan be connected
It connects, second blade is mounted on middle anchor ring and inner ring surface, and distributing position keeps to the side in one end and multiple airfoil fans
Airfoil fan is connected.
Based on the above technical solution, the present invention can also be improved as follows:
Preferably, if the centre distance of the leading edge of the second blade to impeller is the leading edge of R1, the first blade to impeller
Centre distance be R2 and the centre distance of the leading edge of airfoil fan to impeller is R3, then (R2-R1)/(R3-R1)=1/4~
1/2。
Preferably, if the runner exit formed between the suction surface of the first blade and the pressure face of the second blade is to impeller
The angle at center is α, the runner exit formed between the pressure face of the first blade and the suction surface of the second blade to impeller
The angle at center is β, and β is greater than α, and (β-α)/(alpha+beta)=0%~25%.
Preferably, each blade group includes five airfoil fans, first blade and second blade, is located at
Airfoil fan between first blade and the second blade will be formed between the suction surface of the first blade and the pressure face of the second blade
Runner be divided into two runners, the angle at the center for being exported to impeller of two runners is respectively close to the second blade
α 2, the 1 < α 2 of angle α of α 1 and close first blade, and (α 2- α 1)/(α 2+ α 1)=0~25%.
Preferably, aerofoil profile leaf there are two being set between the second blade in the adjacent blades group in the first blade and downstream
Piece, two airfoil fans are by shape between the suction surface of the second blade in the adjacent blades group in the pressure face of the first blade and downstream
At runner be divided into three runners, the angle at the center for being exported to impeller of three runners swims over to upstream from down and is respectively
β 3, β 2 and β 1,1 < β of angle β, 2 < β 3, and (β 2- β 1)/(β 2+ β 1) ≈ (β 3- β 2)/(β 3+ β 2)=0~25%.
Preferably, the airfoil fan is towards impeller direction of rotation evagination, first blade and the second blade be bent to
Impeller rotation be opposite direction evagination.
Preferably, which is characterized in that the sidewall shape of the shroud is arc or cone arc.
Compared with prior art, the present invention a kind of blower is additionally provided, at least one skill in the prior art of solution
Art problem.
The technical scheme to solve the above technical problems is that a kind of blower, including spiral case, filter, collector,
The draught fan impeller and motor is equipped with draught fan impeller in the spiral case, and the motor is fixed on spiral case, and its is defeated
Shaft is connected with reel；The collector is mounted on the spiral case and is equipped with collector, the collection close to the side wall of shroud
Stream device outer wall is connected with filter.
Preferably, the radial unilateral gap of the collector is the 0.5%~1% of draught fan impeller diameter, the amount of being axially inserted into
It is the 0.5%~1.5% of draught fan impeller diameter.
Compared with prior art, the present invention a kind of train is additionally provided, at least one skill in the prior art of solution
Art problem.
The technical scheme to solve the above technical problems is that a kind of train, the train includes air feed system,
The air feed system includes the blower, and the spiral case of the blower is equipped with hanger bracket, and the hanger bracket is mounted on train vehicle
Body bottom.
Preferably, the hanger bracket is equipped with damper.
In conclusion the beneficial effects of the present invention are: impeller of the invention has, high-efficient, wind pressure is high, relative diameter
Small feature, the high pressure needed for plateau operation EMU, Wind Volume, feature small in size can effectively meet high on train
The cooling requirement that original is used.
Detailed description of the invention
Fig. 1 is draught fan impeller schematic view of the front view of the invention；
Fig. 2 is the A-A the schematic diagram of the section structure of Fig. 1；
Fig. 3 is draught fan impeller left view structural representation of the invention；
Fig. 4 is draught fan impeller right side structural representation of the invention；
Fig. 5 is the partial profile structure of blower of the present invention；
Fig. 6 is the perspective cross section structural schematic diagram of blower of the present invention；
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
As shown in Figures 1 to 4, the integrated fan propeller 100 of a kind of two-step supercharging, the impeller 100 include multiple blades
Group 110, reel 120, hub disk 130 and shroud 140, the reel 120 are mounted on the middle part of hub disk 130, and the hub disk 130 is with before
Multiple blade groups 110, multiple blade group circular array distributions are fixed between disk 140；Each blade group 110 includes more
A airfoil fan 113, the first blade 111 and the second blade 112, centered on the axis of the impeller 100, by the hub disk
130 disk is set as outer ring surface 131, middle anchor ring 132 and inner ring surface 133 from edge to center, and multiple airfoil fans 113 divide
In outer ring surface 131, first blade 111 is mounted on middle anchor ring 132 and is distributed position in one end and multiple airfoil fans 113 cloth
An airfoil fan 113 in resting against is connected, and second blade 112 is mounted on middle anchor ring 132 and inner ring surface 133, and
One end is connected with the airfoil fan 113 that distributing position in multiple airfoil fans 113 keeps to the side.
Preferably, if the centre distance of the leading edge of the second blade 112 to impeller 100 is the air inlet of R1, the first blade 111
While the centre distance to impeller 100 is R2 and the centre distance of the leading edge of airfoil fan 113 to impeller 100 is R3, then (R2-
R1)/(R3-R1)=1/4~1/2.
Preferably, if the runner exit formed between the suction surface of the first blade 111 and the pressure face of the second blade 112 extremely
The angle at the center of impeller 100 is α, the stream formed between the pressure face of the first blade 111 and the suction surface of the second blade 112
The angle that road is exported to the center of impeller 100 is β, and β is greater than α, and (β-α)/(alpha+beta)=0%~25%.
Preferably, each blade group 110 includes five airfoil fans, 113, first blades 111 and one second
Blade 112, the airfoil fan 113 between the first blade 111 and the second blade 112, by the suction surface of the first blade 111 with
The runner formed between the pressure face of second blade 112 is divided into two runners, and two runners are exported to impeller 100
The angle at center is respectively the α 1 close to the second blade 112 and α 2,1 < α 2 of angle α, and (the α 2- α close to the first blade 111
1)/(α 2+ α 1)=0~25%.
Preferably, it is equipped between the second blade 112 in the adjacent blades group 110 in the first blade 111 and downstream
Two airfoil fans 113, two airfoil fans 113 will be in the adjacent blades groups 110 in the pressure face of the first blade 111 and downstream
The runner formed between the suction surface of second blade 112 is divided into three runners, and three runners are exported to impeller 100
It is respectively β 3, β 2 and β 1,1 < β of angle β, 2 < β 3, and (β 2- β 1)/(β 2+ β 1) ≈ (β 3- β that the angle at center, which swims over to upstream from down,
2)/(β 3+ β 2)=0~25%.
Preferably, the airfoil fan 113 is towards 100 direction of rotation evagination of impeller, first blade 111 and the second leaf
It is opposite direction evagination that the bending of piece 112 is rotated towards impeller 100.
Preferably, the sidewall shape of the shroud 140 is arc or cone arc.
As shown in Figure 5 and Figure 6, the invention further relates to a kind of blower, including spiral case 200, filter 300, collector 400,
The draught fan impeller 100 and motor 700, draught fan impeller 100 is equipped in the spiral case 200, and the motor 700 is fixed
On spiral case 200, and its output shaft (not marking on the diagram) is connected with reel 120；The collector 400 is mounted on the snail
It is equipped with collector 400 close to the side wall of shroud 140 on shell 200,400 outer wall of collector is connected with filter 300.
Preferably, the radial unilateral gap of the collector 400 is the 0.5%~1% of 100 diameter of draught fan impeller, axial
Insertion is the 0.5%~1.5% of 100 diameter of draught fan impeller.
The invention further relates to a kind of train, the train includes air feed system, and the air feed system includes the wind
The spiral case 200 of machine, the blower is equipped with hanger bracket 500, and the hanger bracket 500 is mounted on train body bottom.
Preferably, the hanger bracket 500 is equipped with damper 600.
Draught fan impeller 100 of the invention may be considered the group hinge of backward an impeller and a multi-blade fan impeller
Wheel.The advantages of program is wide to the high-efficient of blower, utilizable flow range after having the characteristics that simultaneously, while having multiple wing wind
The feature that the flow of machine is big, wind pressure is high.It is used on plateau, to impeller after individually using, then wind pressure is obviously inadequate；Using multiple wing wind
Machine, then due to multi-blade fan low efficiency, power of fan is super, is all unable to satisfy application demand.
In a kind of specific embodiment, draught fan impeller of the invention by 8 second blades, 112,8 first blades 111,40
Piece airfoil fan 113 forms.Wherein 16 airfoil fans 113 link together with the second blade 112, the first blade 111 respectively.
The leading edge of first blade 111 requires to be arranged in behind the aditus laryngis of the second blade 112, and should be with a distance from aditus laryngis
It does not influence subject to impeller air inlet.Second blade, 112 leading edge is to impeller center distance R1,111 leading edge of the first blade to impeller
Centre distance R2 and airfoil fan leading edge are to, there are certain dependence, passing through three-dimensional flow field between impeller center distance R3
Simulation calculates, it is proposed that in (R2-R1)/(R3-R1)=1/4~1/2 range.
8 second the first blades of blade 112 and 8 piece 111 are respectively uniformly distributed, but the second blade 112 and the first blade 111
Between runner width it is inconsistent.The runner formed between the suction surface of first blade 111 and the pressure face of the second blade 112 goes out
The angle α of mouth to impeller center is less than the stream formed between the pressure face of the first blade 111 and the suction surface of the second blade 112
Road angle β, there are certain relationships: (β-α)/(alpha+beta)=0%~25% between the angle between two runners.Two runners
Differentiation design is conducive to the air-flow separation for inhibiting to occur in blade suction surface exit region, improves impeller adiabatic efficiency, and improve wind
Pressure.Deviate the limit value, blade flow field will deteriorate, and fan efficiency and pressure can all reduce.
40 airfoil fans 1 are not uniformly distributed.Every 5 airfoil fans 1 form one group, and every group is uniformly divided around center
Cloth.Airfoil fan 1 is again divided the runner formed between the suction surface of the first blade 111 and the pressure face of the second blade 112
At two runners, and two runner width are inconsistent, 1 < α 2 of angle α, and (α 2- α 1)/(α 2+ α 1)=0~25%.Similarly, it presss from both sides
1 < β of angle beta, 2 < β 3, and (β 2- β 1)/(β 2+ β 1) ≈ (β 3- β 2)/(β 3+ β 2)=0~25%；(β-α)/(β+α)=0~
25%.
The function of blower of the present invention is motor to be passed to the mechanical energy of impeller to be converted into the potential energy (air pressure of air
Increase) and kinetic energy (air velocity increase).There are matching relationship, radial directions between draught fan impeller 100 and the collector of front 400
Unilateral gap generally takes the 0.5%~1% of impeller diameter；The amount of being axially inserted into generally takes the 0.5%~1.5% of impeller diameter.Collection
Flowing device 400, there are approximate arc transitions with the shroud circular arc of draught fan impeller 100.The collection of spiral case 200 comes out from draught fan impeller 100
High speed and high pressure air, and it is conveyed to the equipment for needing air below.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (11)
1. a kind of integrated fan propeller of two-step supercharging, which is characterized in that the impeller include multiple blade groups, reel, after
Disk and shroud, the reel are mounted on the middle part of hub disk, and multiple blade groups are fixed between the hub disk and shroud, multiple described
The distribution of blade group circular array；Each blade group includes multiple airfoil fans, the first blade and the second blade, with the impeller
Axis centered on, the disk of the hub disk is set as outer ring surface, middle anchor ring and inner ring surface, multiple wings from edge to center
Type Leaf positional distribution is in outer ring surface, and first blade is mounted on middle anchor ring and one end is leaned on distributing position in multiple airfoil fans
In an airfoil fan be connected, second blade is mounted on middle anchor ring and inner ring surface, and one end and multiple aerofoil profiles
The airfoil fan that distributing position keeps to the side in blade is connected.
2. a kind of integrated fan propeller of two-step supercharging according to claim 1, which is characterized in that set the second blade into
The centre distance of gas side to impeller is R1, the centre distance of leading edge to the impeller of the first blade is R2 and the air inlet of airfoil fan
While the centre distance to impeller is R3, then (R2-R1)/(R3-R1)=1/4~1/2.
3. a kind of integrated fan propeller of two-step supercharging according to claim 1, which is characterized in that set the suction of the first blade
The angle at the runner exit formed between power face and the pressure face of the second blade to the center of impeller is α, the pressure of the first blade
The angle at the runner exit formed between face and the suction surface of the second blade to the center of impeller is β, and β is greater than α, and (β-α)/
(alpha+beta)=0%~25%.
4. a kind of integrated fan propeller of two-step supercharging according to claim 3, which is characterized in that each blade group
Aerofoil profile including five airfoil fans, first blade and second blade, between the first blade and the second blade
The runner formed between the suction surface of first blade and the pressure face of the second blade is divided into two runners, two institutes by blade
The angle for stating the center for being exported to impeller of runner is respectively the α 1 close to the second blade and α 2 close to the first blade, angle α 1
< α 2, and (α 2- α 1)/(α 2+ α 1)=0~25%.
5. a kind of integrated fan propeller of two-step supercharging according to claim 4, which is characterized in that be located at the first blade and
It is set between the second blade in the adjacent blades group in downstream there are two airfoil fan, two airfoil fans are by the pressure of the first blade
The runner formed between the suction surface of the second blade in the adjacent blades group in power face and downstream is divided into three runners, three institutes
It is respectively β 3, β 2 and β 1,1 < β of angle β, 2 < β 3, and (β that the angle for stating the center for being exported to impeller of runner, which swims over to upstream from down,
2- β 1)/(β 2+ β 1) ≈ (β 3- β 2)/(β 3+ β 2)=0~25%.
6. a kind of integrated fan propeller of two-step supercharging according to claim 1, which is characterized in that the airfoil fan to
Impeller direction of rotation evagination, first blade and the second blade bending towards impeller rotation be opposite direction evagination.
7. a kind of integrated fan propeller of two-step supercharging according to claim 1, which is characterized in that the side wall of the shroud
Shape is arc or cone arc.
8. a kind of blower, which is characterized in that including spiral case, filter, collector, wind as described in any one of claim 1 to 7
Machine impeller and motor are equipped with draught fan impeller in the spiral case, and the motor is fixed on spiral case, and its output shaft and axis
Disk is connected；The collector is mounted on the spiral case and is equipped with collector, the collector outer wall close to the side wall of shroud
It is connected with filter.
9. a kind of blower according to claim 8, which is characterized in that the radial unilateral gap of the collector is draught fan impeller
The 0.5%~1% of diameter, the amount of being axially inserted into are the 0.5%~1.5% of draught fan impeller diameter.
10. a kind of train, which is characterized in that the train includes air feed system, and the air feed system includes such as claim 8
Or blower described in 9, the spiral case of the blower are equipped with hanger bracket, the hanger bracket is mounted on train body bottom.
11. a kind of train according to claim 10, which is characterized in that the hanger bracket is equipped with damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810246291.0A CN110296102B (en) | 2018-03-23 | 2018-03-23 | Integrated fan impeller with two-stage supercharging, fan and train |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810246291.0A CN110296102B (en) | 2018-03-23 | 2018-03-23 | Integrated fan impeller with two-stage supercharging, fan and train |
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| CN110296102A true CN110296102A (en) | 2019-10-01 |
| CN110296102B CN110296102B (en) | 2021-10-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109099006A (en) * | 2018-07-20 | 2018-12-28 | 中车唐山机车车辆有限公司 | impeller, blower and rail vehicle |
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| CN104847692A (en) * | 2013-12-04 | 2015-08-19 | 苹果公司 | Shrouded fan impeller with reduced cover overlap |
| CN204900330U (en) * | 2015-08-06 | 2015-12-23 | 佛山市顺德区美的电热电器制造有限公司 | Fan wheel , centrifugal fan and domestic appliance |
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| CN202833298U (en) * | 2012-08-29 | 2013-03-27 | 苹果公司 | Centrifugal blower |
| CN104847692A (en) * | 2013-12-04 | 2015-08-19 | 苹果公司 | Shrouded fan impeller with reduced cover overlap |
| CN204900330U (en) * | 2015-08-06 | 2015-12-23 | 佛山市顺德区美的电热电器制造有限公司 | Fan wheel , centrifugal fan and domestic appliance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109099006A (en) * | 2018-07-20 | 2018-12-28 | 中车唐山机车车辆有限公司 | impeller, blower and rail vehicle |
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|---|---|
| CN110296102B (en) | 2021-10-22 |
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