CN109973427A - A kind of multi-wing centrifugal fan blade, impeller and a kind of multi-wing centrifugal fan - Google Patents
A kind of multi-wing centrifugal fan blade, impeller and a kind of multi-wing centrifugal fan Download PDFInfo
- Publication number
- CN109973427A CN109973427A CN201910390070.5A CN201910390070A CN109973427A CN 109973427 A CN109973427 A CN 109973427A CN 201910390070 A CN201910390070 A CN 201910390070A CN 109973427 A CN109973427 A CN 109973427A
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- Prior art keywords
- blade
- circular arc
- wing centrifugal
- centrifugal fan
- airfoil
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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
- 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
- F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
- F04D29/283—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis rotors of the squirrel-cage type
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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
This application discloses a kind of multi-wing centrifugal fan blade, impeller and a kind of multi-wing centrifugal fans, and wherein multi-wing centrifugal fan blade includes: airfoil fan portion and circular arc type blade part；The tail end in the airfoil fan portion is connected with the head end of the circular arc type blade part.In the application, it is airfoil fan portion and circular arc type blade part by multi-wing centrifugal fan blade design, it can freely adjust blade inlet and outlet angle by adjusting circular arc type blade part, the best bent angle design in airfoil fan portion simultaneously, so that the bent angle of blade is not too big, and airfoil fan portion can reduce the import impact loss in circular arc vane portion and separate loss with blade trailing edge, loss is separated with blade trailing edge to reduce the import impact loss of entire blade, so that blade meets optimal aeroperformance, it is small to solve existing no bent angle, the technical issues of import impact loss is small and small blade is lost in blade trailing edge separation.
Description
Technical field
The application belong to blower technical field more particularly to a kind of multi-wing centrifugal fan blade, impeller and a kind of multiple wing from
Heart blower.
Background technique
Import and export blade angle is affected to fan performance in multi-wing centrifugal fan, existing multi-wing centrifugal fan impeller
Uniform thickness circular arc blade design is mostly used, this method can arbitrarily adjust inlet and outlet blade angle, to meet different aerodynamic performances.
But uniform thickness circular arc profile has the shortcomings that air-flow import impact loss is big, blade trailing edge separation loss is serious,
Cause to be difficult to obtain preferable aeroperformance.Air-flow can be reduced in import impact loss and blade tail using airfoil fan structure
For fate from loss, aeroperformance is relatively excellent.However, airfoil structure meet import and export angle in the case where, bent angle mistake
Greatly, airfoil structure is varied widely, it is difficult to meet optimal aeroperformance.
Therefore, the multi-wing centrifugal fan leaf that a kind of bent angle is small, import impact loss is small, blade trailing edge separation loss is small is designed
Piece is those skilled in the art's technical problem urgently to be resolved.
Summary of the invention
In view of this, being solved this application provides a kind of multi-wing centrifugal fan blade, impeller and a kind of multi-wing centrifugal fan
The technical issues of existing no bent angle is small, import impact loss is small and small blade is lost in blade trailing edge separation.
The application first aspect provides a kind of multi-wing centrifugal fan blade, comprising: airfoil fan portion and circular arc type blade part；
The tail end in the airfoil fan portion is connected with the head end of the circular arc type blade part.
Preferably,
There are following relationships by the length d in the circular arc vane portion and the length D in the airfoil fan portion:
The h is
Preferably,
The h is specially
Preferably,
The airfoil fan portion and the circular arc type blade part are integrally formed.
Preferably,
The airfoil fan portion and the circular arc type blade part are detachably connected.
Preferably,
The tail end in the airfoil fan portion offers the first groove, and the head end of the circular arc type blade part, which is equipped with, is used for intercalation
The first protrusion in first groove.
Preferably,
The head end of the circular arc type blade part offers the second groove, and the tail end in the airfoil fan portion, which is equipped with, is used for intercalation
The second protrusion in second groove.
The application second aspect provides a kind of multi-wing centrifugal fan impeller, comprising: multi-wing centrifugal wind described in first aspect
Machine blade.
The application third aspect provides a kind of multi-wing centrifugal fan, comprising: multi-wing centrifugal fan leaf described in second aspect
Wheel.
As can be seen from the above technical solutions, the embodiment of the present application has the advantage that
This application provides a kind of multi-wing centrifugal fan blades, comprising: airfoil fan portion and circular arc type blade part；The wing
The tail end of type blade part is connected with the head end of the circular arc type blade part.In the application, it is by multi-wing centrifugal fan blade design
Airfoil fan portion and circular arc type blade part can freely adjust blade inlet and outlet angle, while the wing by adjusting circular arc type blade part
The best bent angle of type blade part designs, so that the bent angle of blade is not too big, and airfoil fan portion can reduce circular arc vane
The import impact loss in portion separates loss with blade trailing edge, to reduce import impact loss and the blade trailing edge point of entire blade
From loss, so that blade meets optimal aeroperformance, solve that existing no bent angle is small, import impact loss is small and blade trailing edge
The technical issues of small blade, is lost in separation.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of multi-wing centrifugal fan blade in the embodiment of the present application；
Fig. 2 is a kind of structural schematic diagram of multi-wing centrifugal fan impeller in the embodiment of the present application；
Wherein, appended drawing reference is as follows:
O, multi-wing centrifugal fan blade；1, airfoil fan portion；2, circular arc type blade part；3, the tail end in airfoil fan portion；4,
The head end of circular arc type blade part；5, the first groove；6, the first protrusion.
Specific embodiment
The embodiment of the present application provides a kind of multi-wing centrifugal fan blade, impeller and a kind of multi-wing centrifugal fan, solves
The technical issues of existing no bent angle is small, import impact loss is small and small blade is lost in blade trailing edge separation.
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is only this
Apply for a part of the embodiment, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall in the protection scope of this application.
Referring to Fig. 1, a kind of structural schematic diagram of multi-wing centrifugal fan blade in the embodiment of the present application, comprising: aerofoil profile leaf
Piece portion 1 and circular arc vane portion 2；The tail end 3 in airfoil fan portion and the head end 4 of circular arc type blade part connect.
In the present embodiment, it is airfoil fan portion 1 and circular arc vane portion 2 by multi-wing centrifugal fan blade design, passes through tune
Pitch circle camber blade part 2 can freely adjust blade inlet and outlet angle, while the best bent angle design in airfoil fan portion 1, so that leaf
The bent angle of piece is not too big, and airfoil fan portion 1 can reduce import impact loss and the blade trailing edge point of circular arc type blade part 2
From loss, so that the import impact loss for reducing entire blade separates loss with blade trailing edge, so that blade meets optimal gas
Dynamic performance solves the technical issues of existing no bent angle is small, import impact loss is small and small blade is lost in blade trailing edge separation.
The above are a kind of first embodiments of multi-wing centrifugal fan blade provided by the embodiments of the present application, and the following are the application
A kind of second embodiment for multi-wing centrifugal fan blade that embodiment provides.
Referring to Fig. 1, a kind of structural schematic diagram of multi-wing centrifugal fan blade in the embodiment of the present application, comprising: aerofoil profile leaf
Piece portion 1 and circular arc vane portion 2；The tail end 3 in airfoil fan portion and the head end 4 of circular arc type blade part connect.
In order to enable the performance of blade is more preferably, unsuitable too long, the length in circular arc vane portion 2 of the length d in circular arc vane portion 2
There are following relationships by degree d and the length D in airfoil fan portion 1:H is
Further, h is specially
Further, airfoil fan portion 1 and circular arc vane portion 2 are integrally formed.
Further, airfoil fan portion 1 and circular arc vane portion 2 are detachably connected.
Using the present embodiment multi-wing centrifugal fan blade when, unified blade can be used in the processing mold of circular arc type blade part
Embryo material is imported and exported angle requirement design 2 length of blade of circular arc vane portion according to impeller to meet system requirements, can be greatly decreased
Mold manufacturing expense, is effectively reduced manufacturing cost.Simultaneously meet airfoil fan portion structure it is constant in the case where, can flexibly pass through
Blade inlet and outlet angle is adjusted in circular arc vane portion, to meet the design requirement of different operating conditions.
Further, the tail end 3 in airfoil fan portion offers the first groove 5, and the head end 4 of circular arc type blade part, which is equipped with, to be used for
The first protrusion 6 being intercalated in the first groove.
Preferably, the head end 4 in circular arc vane portion offers the second groove, and the tail end 3 in airfoil fan portion is equipped with for embedding
Insert in the second protrusion in the second groove.
In the present embodiment, it is airfoil fan portion 1 and circular arc vane portion 2 by multi-wing centrifugal fan blade design, passes through tune
Pitch circle camber blade part 2 can freely adjust blade inlet and outlet angle, while the best bent angle design in airfoil fan portion 1, so that leaf
The bent angle of piece is not too big, and airfoil fan portion 1 can reduce import impact loss and the blade trailing edge point of circular arc type blade part 2
From loss, so that the import impact loss for reducing entire blade separates loss with blade trailing edge, so that blade meets optimal gas
Dynamic performance solves the technical issues of existing no bent angle is small, import impact loss is small and small blade is lost in blade trailing edge separation.
Referring to Fig. 2, the embodiment of the present application also provides a kind of multi-wing centrifugal fan impeller, comprising: implement one and embodiment
Multi-wing centrifugal fan blade O in two.
In the present embodiment, multi-wing centrifugal fan blade O is designed as airfoil fan portion 1 and circular arc vane portion 2, passes through tune
Pitch circle camber blade part 2 can freely adjust blade inlet and outlet angle, while the best bent angle design in airfoil fan portion 1, so that leaf
The bent angle of piece is not too big, and airfoil fan portion 1 can reduce import impact loss and the blade trailing edge point of circular arc type blade part 2
From loss, so that the import impact loss for reducing entire blade separates loss with blade trailing edge, so that blade meets optimal gas
Dynamic performance solves the technical issues of existing no bent angle is small, import impact loss is small and small blade is lost in blade trailing edge separation.
The embodiment of the present application also provides a kind of multi-wing centrifugal fan, comprising: the multi-wing centrifugal fan impeller in embodiment three.
In the present embodiment, it is airfoil fan portion 1 and circular arc vane portion 2 by multi-wing centrifugal fan blade design, passes through tune
Pitch circle camber blade part 2 can freely adjust blade inlet and outlet angle, while the best bent angle design in airfoil fan portion 1, so that leaf
The bent angle of piece is not too big, and airfoil fan portion 1 can reduce import impact loss and the blade trailing edge point of circular arc type blade part 2
From loss, so that the import impact loss for reducing entire blade separates loss with blade trailing edge, so that blade meets optimal gas
Dynamic performance solves the technical issues of existing no bent angle is small, import impact loss is small and small blade is lost in blade trailing edge separation.
The above, above embodiments are only to illustrate the technical solution of the application, rather than its limitations；Although referring to before
Embodiment is stated the application is described in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope of each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution.
Claims (9)
1. a kind of multi-wing centrifugal fan blade characterized by comprising airfoil fan portion and circular arc type blade part；
The tail end in the airfoil fan portion is connected with the head end of the circular arc type blade part.
2. multi-wing centrifugal fan blade according to claim 1, which is characterized in that the length d in the circular arc vane portion
There are following relationships with the length D in the airfoil fan portion:
The h is
3. multi-wing centrifugal fan blade according to claim 2, the h are specially
4. multi-wing centrifugal fan blade according to claim 1, which is characterized in that the airfoil fan portion and the circular arc
Type blade part is integrally formed.
5. multi-wing centrifugal fan blade according to claim 1, which is characterized in that the airfoil fan portion and the circular arc
Type blade part is detachably connected.
6. multi-wing centrifugal fan blade according to claim 5, which is characterized in that the tail end in the airfoil fan portion opens up
There is the first groove, the head end of the circular arc type blade part is equipped with the first protrusion for being intercalated in first groove.
7. multi-wing centrifugal fan blade according to claim 5, which is characterized in that the head end of the circular arc type blade part is opened
Equipped with the second groove, the tail end in the airfoil fan portion is equipped with the second protrusion for being intercalated in second groove.
8. a kind of multi-wing centrifugal fan impeller characterized by comprising multi-wing centrifugal described in any one of claims 1 to 7
Fan blade.
9. a kind of multi-wing centrifugal fan characterized by comprising multi-wing centrifugal fan impeller described in claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910390070.5A CN109973427B (en) | 2019-05-10 | 2019-05-10 | Multi-wing centrifugal fan blade, impeller and multi-wing centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910390070.5A CN109973427B (en) | 2019-05-10 | 2019-05-10 | Multi-wing centrifugal fan blade, impeller and multi-wing centrifugal fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109973427A true CN109973427A (en) | 2019-07-05 |
| CN109973427B CN109973427B (en) | 2021-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910390070.5A Active CN109973427B (en) | 2019-05-10 | 2019-05-10 | Multi-wing centrifugal fan blade, impeller and multi-wing centrifugal fan |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6634855B1 (en) * | 1996-05-07 | 2003-10-21 | Rollo Enterprises Limited | Impeller and fan incorporating same |
| CN203463305U (en) * | 2013-09-07 | 2014-03-05 | 上海光菱机械科技有限公司 | Wing type centrifugal fan |
| CN205078497U (en) * | 2015-08-15 | 2016-03-09 | 蚌埠市蚌风风机有限公司 | Centrifugal fan single face machine airfoil fan |
| CN105793576A (en) * | 2013-12-11 | 2016-07-20 | 株式会社京滨 | Centrifugal fan |
| TW201837322A (en) * | 2017-04-10 | 2018-10-16 | 日商夏普股份有限公司 | Centrifugal fan, moulding die, and fluid feeding device |
-
2019
- 2019-05-10 CN CN201910390070.5A patent/CN109973427B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6634855B1 (en) * | 1996-05-07 | 2003-10-21 | Rollo Enterprises Limited | Impeller and fan incorporating same |
| CN203463305U (en) * | 2013-09-07 | 2014-03-05 | 上海光菱机械科技有限公司 | Wing type centrifugal fan |
| CN105793576A (en) * | 2013-12-11 | 2016-07-20 | 株式会社京滨 | Centrifugal fan |
| CN205078497U (en) * | 2015-08-15 | 2016-03-09 | 蚌埠市蚌风风机有限公司 | Centrifugal fan single face machine airfoil fan |
| TW201837322A (en) * | 2017-04-10 | 2018-10-16 | 日商夏普股份有限公司 | Centrifugal fan, moulding die, and fluid feeding device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109973427B (en) | 2021-11-26 |
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