CN102720698A - Fan - Google Patents
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- CN102720698A CN102720698A CN2012101694699A CN201210169469A CN102720698A CN 102720698 A CN102720698 A CN 102720698A CN 2012101694699 A CN2012101694699 A CN 2012101694699A CN 201210169469 A CN201210169469 A CN 201210169469A CN 102720698 A CN102720698 A CN 102720698A
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- impeller
- fan
- blade
- motor
- cover plate
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Abstract
The invention discloses a fan, which comprises a fan shell, a motor and an impeller, wherein the rear end of the fan shell is provided with the motor; the impeller is arranged in the fan shell and is connected with an output shaft of the motor; the impeller comprises a front cover plate, a rear cover plate and blades; a plurality of blades are arranged between the front cover plate and the rear plate in an annular array, are vertically arranged between the front cover plate and the rear plate and have an arc shape; and a connecting extension line between the center of the outer sides and the center of the inner sides of the blades penetrates through the center of a circle of the front cover plate and the rear cover plate. By the fan, in the gas exhaust process, airflow in a deviation direction is not generated, and the exhaust loss of the fan is avoided; and meanwhile, the probability of causing gas turbulence or vortex under external disturbance is reduced, fatigue crack of the blades of the impeller or a resonance phenomenon of the impeller is avoided, the phenomenon that the blades of the impeller are broken is avoided, the shutdown maintenance time of the fan is shortened, and the exhaust efficiency of the fan is improved.
Description
Technical field
The present invention relates to a kind of blower fan, particularly a kind of in the process of dispatch gas, can not produce the blower fan of the air-flow of bias direction.
Background technique
Blower fan is the mechanical energy that relies on input, improves supply gas the side by side machinery of body of gas pressure, and it is a kind of driven fluid machinery.Blower fan generally comprises Blower Housing, motor and impeller, and the Blower Housing rear end is provided with motor, and impeller is arranged in the Blower Housing, links to each other with the output shaft of motor, and during running, the output shaft impeller of motor is rotated, thereby reaches the purpose of dispatch gas.The blade of impeller was arranged between header board lid and the back plate lid in the past; The center of circle with respect to forward and backward plate lid between its blade has certain deviation; Can make like this in the process of blower fan dispatch gas; Except the airflow direction that produces dispatch as requested, also can produce the air-flow of bias direction, caused blower fan dispatch loss; Though the deviation flow that is produced simultaneously is less; But it has improved the probability that can cause under the situation that receives external disturbance that gas disorder or eddy current situation take place; Fatigue crack appears in the blade of impeller easily, the resonance phenomenon of blade perhaps occurs, and the phenomenon of leaf destruction can take place when serious; Increase the time of blower fan shutdown maintenance, and then reduced the efficiency of supply of blower fan.
Summary of the invention
Technical problem to above-mentioned existence the objective of the invention is: the blade that has proposed the little and impeller of a kind of dispatch loss is the blower fan of easy-rupturing not.
Technical solution of the present invention is achieved in that a kind of blower fan; Comprise Blower Housing, motor and impeller, said Blower Housing rear end is provided with motor, and said impeller is arranged in the Blower Housing; Link to each other with the output shaft of motor; Said impeller comprises front shroud, back shroud and blade, and circular array is shown the multi-disc blade between said front shroud and the back shroud, and said blade vertically is arranged between front shroud and the back shroud; Said blade is curved; The elongation line that the outer side center of said blade links to each other with inboard center is through the center of circle of front shroud and back shroud.
Preferably, said blade and front shroud, back shroud are welded to connect.
Preferably, be provided with electric machine support below the said motor.
Because the utilization of technique scheme, the present invention compared with prior art has advantage:
Blower fan of the present invention, because blade vertically is arranged between front shroud and the back shroud, blade is curved; The elongation line that the top center of blade links to each other with bottom centre in the process of blower fan dispatch gas, can not produce the air-flow of bias direction through the center of circle of front shroud and back shroud; Avoid blower fan dispatch loss, also reduced the probability that causes under the situation that receives external disturbance that gas disorder or eddy current situation take place simultaneously, avoided the blade of impeller fatigue crack to occur; The resonance phenomenon that blade perhaps occurs; Avoid the phenomenon of the leaf destruction of impeller more, reduced the time of blower fan shutdown maintenance, and then increased the efficiency of supply of blower fan.
Description of drawings
Below in conjunction with accompanying drawing technological scheme of the present invention is described further:
Accompanying drawing 1 is the stereogram of blower fan of the present invention;
Accompanying drawing 2 is the sectional view of blower fan of the present invention
Wherein: 1, Blower Housing; 2, motor; 3, electric machine support; 4, output shaft; 5, front shroud; 6, back shroud; 7, blade.
Embodiment
Below in conjunction with accompanying drawing the present invention is described.
Like accompanying drawing 1, the of the present invention a kind of blower fan shown in 2, comprise Blower Housing 1, motor 2 and impeller, said Blower Housing 1 rear end is provided with motor 2; Said motor 2 belows are provided with electric machine support 3; Said impeller is arranged in the Blower Housing 1, links to each other with the output shaft 4 of motor 2, and said impeller comprises front shroud 5, back shroud 6 and blade 7; Circular array is shown multi-disc blade 7 between said front shroud 5 and the back shroud 6, and said blade 7 vertically is arranged between front shroud 5 and the back shroud 6; Said blade 7 is welded to connect with front shroud 5, back shroud 6; Said blade 7 is curved; The elongation line that the outer side center of said blade 7 links to each other with inboard center is through the center of circle of front shroud 5 and back shroud 6.
During use, output shaft 4 impeller of motor 2 are rotated, thereby reach the purpose of dispatch gas.In the process of dispatch gas, can not produce the air-flow of bias direction, avoided blower fan dispatch loss; Also reduced simultaneously the probability that causes under the situation that receives external disturbance that gas disorder or eddy current situation take place; Avoid the blade 7 of impeller fatigue crack to occur, the resonance phenomenon of blade 7 perhaps occurs, avoided the phenomenon of blade 7 fractures of impeller more; Reduce the time of blower fan shutdown maintenance, and then increased the efficiency of supply of blower fan.
The foregoing description only is explanation technical conceive of the present invention and characteristics; Its purpose is to let the personage that is familiar with this technology can understand content of the present invention and implements; Can not limit protection scope of the present invention with this; All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (3)
1. blower fan; Comprise Blower Housing, motor and impeller, said Blower Housing rear end is provided with motor, and said impeller is arranged in the Blower Housing; Link to each other with the output shaft of motor; Said impeller comprises front shroud, back shroud and blade, and circular array is shown the multi-disc blade between said front shroud and the back shroud, it is characterized in that: said blade vertically is arranged between front shroud and the back shroud; Said blade is curved; The elongation line that the outer side center of said blade links to each other with inboard center is through the center of circle of front shroud and back shroud.
2. blower fan according to claim 1 is characterized in that: said blade and front shroud, back shroud are welded to connect.
3. blower fan according to claim 1 and 2 is characterized in that: said motor below is provided with electric machine support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101694699A CN102720698A (en) | 2012-05-29 | 2012-05-29 | Fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101694699A CN102720698A (en) | 2012-05-29 | 2012-05-29 | Fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102720698A true CN102720698A (en) | 2012-10-10 |
Family
ID=46946536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101694699A Pending CN102720698A (en) | 2012-05-29 | 2012-05-29 | Fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102720698A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573659A (en) * | 2013-11-05 | 2014-02-12 | 安徽工贸职业技术学院 | Gas transportation equipment |
| CN104654473A (en) * | 2014-11-21 | 2015-05-27 | 西宁科进工业设计有限公司 | Car-mounted compact-structure air purifier |
-
2012
- 2012-05-29 CN CN2012101694699A patent/CN102720698A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573659A (en) * | 2013-11-05 | 2014-02-12 | 安徽工贸职业技术学院 | Gas transportation equipment |
| CN104654473A (en) * | 2014-11-21 | 2015-05-27 | 西宁科进工业设计有限公司 | Car-mounted compact-structure air purifier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121010 |