CN110529410A - A kind of flow-mixing blower fan - Google Patents
A kind of flow-mixing blower fan Download PDFInfo
- Publication number
- CN110529410A CN110529410A CN201910735199.5A CN201910735199A CN110529410A CN 110529410 A CN110529410 A CN 110529410A CN 201910735199 A CN201910735199 A CN 201910735199A CN 110529410 A CN110529410 A CN 110529410A
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- China
- Prior art keywords
- impeller
- flow
- collector
- guide vane
- casing
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- 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
- F04D23/00—Other rotary non-positive-displacement 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
- 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
-
- 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
-
- 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
- F04D29/403—Casings; Connections of working fluid 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
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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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of flow-mixing blower fan, including motor, casing, impeller, guide vane and collector；The inner coaxial of casing one end is fixedly installed guide vane, and the hub centre of guide vane is arranged in motor；The output shaft of motor is fixedly connected with the center of impeller；It is provided with collector on the inside of the other end of casing, collector is ipsilateral with impeller；The wheel hub of guide vane and the hub diameter of impeller are identical；Change concavity and convexity casing line proposed by the present invention by one section of sunken arcs with one section of convex circular arc is tangent forms, this ensure that the angle of entrance and exit and shaft is zero, it can guarantee that impeller inlet and outlet have biggish diameter difference simultaneously, centrifugal force made full use of to increase stream pressure.Using this design, reduce the volume in non-acting region, air-flow axial admission obtains energy in impeller, and is axial flowing by oblique upper turn, and then in guide vane, a part of kinetic energy of air-flow is converted into pressure energy, improves stream pressure.
Description
Technical field
The invention belongs to blower technical field, in particular to a kind of flow-mixing blower fan.
Background technique
Flow-mixing blower fan is widely used in the industries such as mine, weaving, metallurgy, power station, aviation, building.Flow-mixing blower fan has had both axis
The advantages of flow fan and centrifugal blower, has high pressure coefficient and discharge coefficient.Air both does centrifugal movement in flow-mixing blower fan
It axially moves again, since its unique design feature makes the internal Secondary Flow full of complexity.
Flow-mixing blower fan is axial admission, is changed in Flow in Impeller direction to flow obliquely, after outflow impeller again
It needs to be changed to axially into rear guide vane or radially into spiral case.It is larger that airflow direction changes drag losses.The change that this patent proposes
Concavity and convexity meridional channel shape reduces blower flow resistance, eliminates casing side-entrance whirlpool area, improves compressor flow and efficiency.
The flow-mixing blower fan of postposition spiral case form is similar with centrifugal blower, and air-flow flows out impeller direction close to radial direction.Due to making
With spiral case, radial dimension increase is more, and the case where outlet axial for many needs, then needs to change air-flow stream again
To, using limit to it is larger.
The flow-mixing blower fan of exit guide vane form, air-flow flow out impeller direction close to axially, usually also need one section of bend will
The complete transition of air-flow is axial subsequently into the further diffusion of rear guide vane realization.
The generally-straight type or arc-shaped of traditional flow-mixing blower fan meridional channel casing line wheel hub line, linear type meridional channel are seen
It is smaller like flow resistance, but import requires to be turned to exit flow, runner has obvious turnover, so flow losses
It is larger.
Arc-shaped casing line wheel hub line can realize certain air-flow steering-effecting in impeller.But for exit guide vane
Type flow-mixing blower fan, in order to which as close possible to axial direction, arc-shaped casing line wheel hub line outlet is axial after making air-flow flow out impeller.It is right
The biggish high pressure flow-mixing blower fan of diameter change is imported and exported in impeller, arc-shaped casing line wheel hub line outlet is axial, then import
Larger with axle clamp angle, air-flow flows into after impeller in casing then low velocity eddy easy to form, weakens impeller and does work ability.
Summary of the invention
The purpose of the present invention is to provide a kind of flow-mixing blower fans, to solve the above problems.
To achieve the above object, the invention adopts the following technical scheme:
A kind of flow-mixing blower fan, including motor, casing, impeller, guide vane and collector；The inner coaxial fixation of casing one end is set
It is equipped with guide vane, the hub centre of guide vane is arranged in motor；The output shaft of motor is fixedly connected with the center of impeller；The other end of casing
Inside is provided with collector, and collector is ipsilateral with impeller；The wheel hub of guide vane and the hub diameter of impeller are identical；
Several blades are equidistantly provided on impeller, blade is arranged along the wheel hub line of impeller；Blade is relative to wheel hub
Edge is the opposite tangent arc of two sections of concavity and convexities, and one section close to collector is lower concave segment, and another section is upper convex section, lower concave segment
Circular arc and upper convex section circular arc radius ratio be 1:2.
It further, is 1.35 close to the ratio between the blade height of collector one end and the blade height of the other end.
Further, collector inner sidewall is circular arc type, and the inner wall of collector inner wall and casing is tangent.
Further, collector outer diameter and casing internal diameter cooperate, and collector outer ledge is provided with collector positioning pin, lead to
Cross collector positioning pin axial limiting.
Further, edge line of the impeller blade close to collector side leans forward, and it is antecurvature to prolong rotation direction.
Further, the other side edge line of impeller blade is vertical with the output shaft of motor.
Further, motor is fixed at the hub centre of guide vane by motor fixing frame；The output shaft of motor passes through
Impeller location nut is fixedly connected with the hub centre of impeller；The wheel hub of impeller is hollow half arc.
Further, impeller blade number is 10, and the guide vane number of blade is 13.
Compared with prior art, the present invention has following technical effect:
Change concavity and convexity casing line proposed by the present invention by one section of sunken arcs with one section of convex circular arc is tangent forms, protect in this way
The angle for having demonstrate,proved entrance and exit and shaft is zero, while can guarantee that impeller inlet and outlet have biggish diameter difference, sufficiently benefit
Increase stream pressure with centrifugal force.Using this design, reduce the volume in non-acting region, air-flow axial admission, in impeller
Interior acquisition energy, and be axial flowing by oblique upper turn, then in guide vane, a part of kinetic energy of air-flow is converted into pressure
Can, improve stream pressure.
The present invention uses exit guide vane, and the radial structure compared with postposition spiral case is more compact, and product size is small.
After modifying impeller meridional channel shape, make air-flow axially into rear guide vane, without elbow structure, axially compact.
Blower is integrally along axial admission, along axial outlet.It is more suitably applied to the air-supply of pipeline isoline.Reduce air-flow
Impact, flow losses are small, and pneumatic noise is low.
This invention ensures that impeller meridional channel streamwise is gradually reduced, flow separation can be reduced, realize low noise
High efficiency.
Impeller imports and exports diameter than that greatly, can efficiently use centrifugal force acting, and blower boosting capability is strong, can effectively overcome
Flow resistance can be competent at long pipeline, the air-supply task of the occasions such as impetuous runner.
Up concave type circular arc inducer air-flow air inlet is smooth, reduces the low regime of runner casing side.Fit circular arc type afflux
Device, runner slope rate continuity reduce flow resistance, increase fan delivery, improve efficiency.
The present invention program is reasonable, and structure is simple, easy to accomplish, can give full play to the advantage of flow-mixing blower fan.
Detailed description of the invention
Fig. 1 is side diagrammatic cross-section of the invention.
Fig. 2 is meridional channel schematic diagram of the invention.
Wherein: 1- collector, 2- casing, 3- impeller, 4- guide vane, 5- motor, 6- machine shaft, 7- motor fixing frame, 8-
Impeller location nut, 9- collector positioning pin, 10- wheel cap line, 11- impeller outlet, 12- vane inlet, the outlet of 13- guide vane, 14-
Impeller inlet, 15- impeller blade leading edge, 16- wheel hub line, 17- impeller blade rear, 18- guide vane blade inlet edge, 19- guide vane leaf
Piece rear, 20- shaft, 21- impeller blade, 22- guide vane blade.
Specific embodiment
Below in conjunction with attached drawing, the present invention is further described:
Please refer to Fig. 1 and Fig. 2, a kind of flow-mixing blower fan, including motor 5, casing 2, impeller 3, guide vane 4 and collector 1；Casing
The inner coaxial of 2 one end is fixedly installed guide vane 4, and the hub centre of guide vane 4 is arranged in motor 5；The output shaft of motor 5 is fixed to be connected
Connect the center of impeller 3；It is provided with collector 1 on the inside of the other end of casing 2, collector 1 and impeller 3 are ipsilateral；The wheel hub of guide vane 4 with
The hub diameter of impeller 3 is identical；
Several blades are equidistantly provided on impeller 3, blade is arranged along the wheel hub line of impeller 3；Blade is relative to wheel hub
Edge be the opposite tangent arc of two sections of concavity and convexities, one section close to collector 1 is lower concave segment, and another section is upper convex section, under
The radius ratio of the circular arc of the circular arc and upper convex section of concave segment is 1:2.
It is 1.35 close to the ratio between the blade height of 1 one end of collector and the blade height of the other end.
1 inner sidewall of collector is circular arc type, and collector molded line and the inner wall of casing 2 are tangent.
1 outer diameter of collector and 2 internal diameter of casing cooperate, and 1 outer ledge of collector is provided with collector positioning pin 9, passes through collection
Flow 9 axial limiting of device positioning pin.
Edge line of the impeller blade close to 1 side of collector leans forward, and it is antecurvature to prolong rotation direction.
The other side edge line of impeller blade is vertical with the output shaft of motor 5.
Motor 5 is fixed at the hub centre of guide vane 4 by motor fixing frame 7；The output shaft of motor 5 is fixed by impeller
Position nut is fixedly connected with the hub centre of impeller 3；The wheel hub of impeller 3 is hollow half arc.
Impeller blade number is 10, and the guide vane number of blade is 13.
A kind of mixed flow air interchanger of the present invention, including collector, impeller, casing, guide vane and electrical equipment；
The working process of the invention is as follows:
The flow-mixing blower fan when carrying out operation, machine shaft 5 drive draught fan impeller 4 move together, motor by bracket with
Guide vane is fixed together.
Wheel rotation after booting, air-flow, axially into draught fan impeller, smoothly enter impeller through collector.The gas in impeller
Body is flowed due to centrifugal action, gas along runner obliquely.Since runner reduces, gas flow rate increases, and switchs to axis along runner
To flowing, into guide vane, a part of kinetic energy of gas is converted into pressure energy in guide vane.Since flow-mixing blower fan imports and exports diameter
Difference can efficiently use the diffusion action of centrifugal force acting and rear guide vane, and fan outlet air-flow static pressure is high, overcomes flow resistance
Ability is strong, can be used for complicated water runner, the big application scenarios of the flow losses such as long pipeline.
Specific features: the wheel cap line tangent arc composition opposite with both ends concavity and convexity, as shown in Fig. 2, front end is lower concave segment,
Guarantee that entrance slope is zero, airflow smooth is made to enter impeller；Front end is upper convex section, guarantees that exit slope is zero, makes air-flow
Smooth outflow impeller, into guide vane；Both ends circular arc is tangent, radius ratio 1:2, while fit circular arc type collector, collector type
Line and casing line are tangent, further decrease inlet flow loss, improve efficiency, increase air quantity；Wheel hub line is circular arc line, cooperates machine
Casket wire shaped, make meridional channel section along flow direction be decrement.Impeller imports and exports outer diameter ratio about 1.35, high outer diameter
Than can use centrifugal force when air-flow being made to flow through impeller and do manual work to gas, improve exit flow pressure.
Impeller costa leans forward, and it is antecurvature to prolong rotation direction, inhibits Secondary Flow, improves efficiency, and reduces noise,
Impeller rear line is vertical with shaft, compact-sized；
Impeller blade number is 10, and the guide vane number of blade is 13.
Claims (8)
1. a kind of flow-mixing blower fan, which is characterized in that including motor (5), casing (2), impeller (3), guide vane (4) and collector (1)；
The inner coaxial of casing (2) one end is fixedly installed guide vane (4), and the hub centre in guide vane (4) is arranged in motor (5)；Motor (5)
Output shaft be fixedly connected with the centers of impeller (3)；Be provided with collector (1) on the inside of the other end of casing (2), collector (1) with
Impeller (3) is ipsilateral；The wheel hub of guide vane (4) is identical as the hub diameter of impeller (3)；
Several blades are equidistantly provided on impeller (3), blade is arranged along the wheel hub line of impeller (3)；Blade is relative to wheel hub
Edge be the opposite tangent arc of two sections of concavity and convexities, one section close to collector (1) is lower concave segment, and another section is upper convex section,
The radius ratio of the circular arc of the circular arc and upper convex section of lower concave segment is 1:2.
2. a kind of flow-mixing blower fan according to claim 1, which is characterized in that the blade height close to collector (1) one end
It is 1.35 with the ratio between the blade height of the other end.
3. a kind of flow-mixing blower fan according to claim 1, which is characterized in that collector (1) inner sidewall is circular arc type, afflux
Device inner wall and the inner wall of casing (2) are tangent.
4. a kind of flow-mixing blower fan according to claim 1, which is characterized in that collector (1) outer diameter is matched with casing (2) internal diameter
It closes, collector (1) outer ledge is provided with collector positioning pin (9), passes through collector positioning pin (9) axial limiting.
5. a kind of flow-mixing blower fan according to claim 1, which is characterized in that impeller blade is close to collector (1) side
Edge line leans forward, and it is antecurvature to prolong rotation direction.
6. a kind of flow-mixing blower fan according to claim 5, which is characterized in that the other side edge line and motor of impeller blade
(5) output shaft is vertical.
7. a kind of flow-mixing blower fan according to claim 1, which is characterized in that motor (5) is fixed by motor fixing frame (7)
Hub centre in guide vane (4) is set；The output shaft of motor (5) is solid by the hub centre of impeller location nut and impeller (3)
Fixed connection；The wheel hub of impeller (3) is hollow half arc.
8. a kind of flow-mixing blower fan according to claim 1, which is characterized in that impeller blade number is 10, and the guide vane number of blade is
13。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910735199.5A CN110529410B (en) | 2019-08-09 | 2019-08-09 | Mixed flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910735199.5A CN110529410B (en) | 2019-08-09 | 2019-08-09 | Mixed flow fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110529410A true CN110529410A (en) | 2019-12-03 |
| CN110529410B CN110529410B (en) | 2021-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910735199.5A Active CN110529410B (en) | 2019-08-09 | 2019-08-09 | Mixed flow fan |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022370A (en) * | 2019-12-31 | 2020-04-17 | 英飞同仁(江苏)风机有限公司 | Preparation method of mixed flow fan impeller |
| WO2021147595A1 (en) * | 2020-01-20 | 2021-07-29 | 珠海格力电器股份有限公司 | Whirl eliminating structure, mixed-flow fan assembly and air conditioner |
| WO2021147593A1 (en) * | 2020-01-20 | 2021-07-29 | 珠海格力电器股份有限公司 | Swirl-elimination structure, mixed flow fan assembly and air conditioner |
| CN113818935A (en) * | 2021-10-22 | 2021-12-21 | 上海工程技术大学 | Low-pressure-difference pneumatic power generation device |
| WO2023226398A1 (en) * | 2022-05-27 | 2023-11-30 | 珠海格力电器股份有限公司 | Mixed flow fan and air duct-type air conditioner |
| WO2023226363A1 (en) * | 2022-05-27 | 2023-11-30 | 珠海格力电器股份有限公司 | Mixed flow fan and duct type air conditioner |
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| CN206487647U (en) * | 2017-01-19 | 2017-09-12 | 东莞市铨达环保通风设备有限公司 | A kind of low-noise energy-saving flow-mixing blower fan |
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Patent Citations (8)
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| US5967747A (en) * | 1998-01-20 | 1999-10-19 | Tennant Company | Low noise fan |
| CN2357132Y (en) * | 1998-11-06 | 2000-01-05 | 淄博矿山节能技术研究所 | Radial shaft mixed-flow ventilator for mine |
| JP2001003894A (en) * | 1999-06-23 | 2001-01-09 | Hitachi Ltd | Electric blower and vacuum cleaner mounted with it |
| CN2592921Y (en) * | 2002-07-30 | 2003-12-17 | 倪松涛 | Mixed-flow fan |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022370A (en) * | 2019-12-31 | 2020-04-17 | 英飞同仁(江苏)风机有限公司 | Preparation method of mixed flow fan impeller |
| WO2021147595A1 (en) * | 2020-01-20 | 2021-07-29 | 珠海格力电器股份有限公司 | Whirl eliminating structure, mixed-flow fan assembly and air conditioner |
| WO2021147593A1 (en) * | 2020-01-20 | 2021-07-29 | 珠海格力电器股份有限公司 | Swirl-elimination structure, mixed flow fan assembly and air conditioner |
| CN113818935A (en) * | 2021-10-22 | 2021-12-21 | 上海工程技术大学 | Low-pressure-difference pneumatic power generation device |
| CN113818935B (en) * | 2021-10-22 | 2022-09-20 | 上海工程技术大学 | Low-pressure-difference pneumatic power generation device |
| WO2023226398A1 (en) * | 2022-05-27 | 2023-11-30 | 珠海格力电器股份有限公司 | Mixed flow fan and air duct-type air conditioner |
| WO2023226363A1 (en) * | 2022-05-27 | 2023-11-30 | 珠海格力电器股份有限公司 | Mixed flow fan and duct type air conditioner |
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| Publication number | Publication date |
|---|---|
| CN110529410B (en) | 2021-12-31 |
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