CN2523993Y - A-style fan without axial force - Google Patents
A-style fan without axial force Download PDFInfo
- Publication number
- CN2523993Y CN2523993Y CN 01252074 CN01252074U CN2523993Y CN 2523993 Y CN2523993 Y CN 2523993Y CN 01252074 CN01252074 CN 01252074 CN 01252074 U CN01252074 U CN 01252074U CN 2523993 Y CN2523993 Y CN 2523993Y
- Authority
- CN
- China
- Prior art keywords
- axial force
- blower fan
- impeller
- style fan
- utility
- Prior art date
- 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.)
- Expired - Fee Related
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model provides an A-style fan without axial force, which is used for supplying air for the industrial furnace. The improvement is that the back of the impeller of the prior A-style fan is additionally provided with a pair of balancing vanes which overcomes the axial force of the prior A-style fan, thereby being applicable to the improvement of mass fans.
Description
(1) technical field: the utility model relates to industrial blower fan, particularly a kind of A type structure blower fan that is used for Industrial Stoves.
(2) background technique: existing blower fan structure mainly contains A, B, four kinds of forms of C, D, referring to Fig. 3,4,5,6, analyze as seen, 1. the common ground of four kinds of structures is loads of the cantilever end driving same nature of a freely-supported system, and this load is made up of four parts: 1. drives impeller is rotated the torsion load M of work done; 2. the inertial force F that produced of the throw of eccentric Δ γ that causes by the impeller foozle
13. the axial load F that forms by impeller intake grill negative pressure
22.A the difference of type and B, C, three kinds of structures of D is: the A type is to bear load by motor reel and bearing, and B, C, D bear load by blower fan axle and bearing.3. analyze each electric machine main shaft force-bearing situation (seeing the following form)
| Structural type | Moment of torsion M | Driving component deadweight (belt wheel, coupling, impeller) mg | The bending moment Mw that driving force forms | Inertial force F 1 | The axial force F that the intake grill negative pressure forms 2 | Remarks |
| A | √ | √ | √ | √ | ||
| B | √ | √ | √ | |||
| C | √ | √ | √ | |||
| D | √ | √ |
To sum up analyze, A type structure is the simplest, but to the having the greatest impact of electric machine main shaft, for inertial force F
1Can make precision by improving impeller, perform dynamic balancing, reduce Δ γ value, make it not cause actual influence, and axial force F
2Exist greatlyyer, still do not have solution at present, though so A type structure the simplest, can only be applicable to little air quantity blower fan, can only adopt B, C, three kinds of structural types of D at present for big air quantity blower fan, its relative cost increases, complex structure.
(3) summary of the invention: the purpose of this utility model is the axial force F 2 that will eliminate on the existing A type structure blower fan, and a kind of no axial force A type structure blower fan is provided.
Concrete scheme of the present utility model is: one group of balance blade is set up at the impeller back side at existing A type structure blower fan.
The utility model is simple in structure, designs ingeniously, can effectively eliminate axial force, makes big air quantity blower fan also can adopt simple A type structure.And adopt this architecture advances to have the A type blower fan of little air quantity now, then can improve its working life.
(4) description of drawings: Fig. 1 is the plan view of the utility model blade wheel structure; Fig. 2 is the left view of the utility model blade wheel structure; Fig. 3 is an A type structure blower fan schematic representation; Fig. 4 is a Type B structure blower fan schematic representation; Fig. 5 is a C type structure blower fan schematic representation; Fig. 6 is a D type structure blower fan schematic representation.
Among the figure, 1-impeller, 2-motor, 3-balance blade.
(5) embodiment: the utility model is assembled by impeller 1 and motor 2, and its structural type is referring to Fig. 3, and the six roots of sensation reinforcing bar that has been welded at the back side of the utility model impeller 1 is made balance blade 3.
Experiment shows that counterbalance effect of the present utility model is very satisfied, can produce big air quantity blower fan by this structure fully.
Claims (1)
1. industrial no axial force A type structure blower fan has motor, is contained in the impeller on the electric machine main shaft, it is characterized in that: set up one group of balance blade at the impeller back side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01252074 CN2523993Y (en) | 2001-10-01 | 2001-10-01 | A-style fan without axial force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01252074 CN2523993Y (en) | 2001-10-01 | 2001-10-01 | A-style fan without axial force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2523993Y true CN2523993Y (en) | 2002-12-04 |
Family
ID=33661866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01252074 Expired - Fee Related CN2523993Y (en) | 2001-10-01 | 2001-10-01 | A-style fan without axial force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2523993Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922469A (en) * | 2010-03-24 | 2010-12-22 | 南通大通宝富风机有限公司 | Centrifuged fan |
| CN101922468A (en) * | 2010-03-24 | 2010-12-22 | 南通大通宝富风机有限公司 | Impeller of centrifugal fan |
-
2001
- 2001-10-01 CN CN 01252074 patent/CN2523993Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922469A (en) * | 2010-03-24 | 2010-12-22 | 南通大通宝富风机有限公司 | Centrifuged fan |
| CN101922468A (en) * | 2010-03-24 | 2010-12-22 | 南通大通宝富风机有限公司 | Impeller of centrifugal fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |