CN204113686U - A kind of BI centrifugal blower - Google Patents
A kind of BI centrifugal blower Download PDFInfo
- Publication number
- CN204113686U CN204113686U CN201420476843.4U CN201420476843U CN204113686U CN 204113686 U CN204113686 U CN 204113686U CN 201420476843 U CN201420476843 U CN 201420476843U CN 204113686 U CN204113686 U CN 204113686U
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- CN
- China
- Prior art keywords
- blade
- cover plates
- centrifugal blower
- lower cover
- exhaust outlet
- 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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Abstract
The utility model discloses a kind of BI centrifugal blower, solve the problem that existing fan operation noise is excessive, form primarily of motor, upper and lower cover plates and blade, at least a slice blade is fixedly connected with between upper and lower cover plates, the edge of the exhaust outlet side of described blade is zigzag fashion, make the air of flowing and blade exhaust outlet edge contact area increase and realize shunting, reduce the wind speed of unit area, thus reduce operating noise.The utility model adopts " S " bayonet connection in addition, carries out the connection of blade and upper and lower cover plates, easy to assembly.
Description
Technical field
The utility model relates to a kind of blower fan, and especially a kind of blade exhaust outlet edge is zigzag BI centrifugal blower.
Background technique
Centrifugal blower is the mechanical energy relying on input, and improve gas pressure and to supply gas side by side the machinery of body, it is a kind of driven fluid machinery.
Be divided into FC centrifugal blower, BI centrifugal blower and radial centrifugal blower according to the exit angle size of fan blade, BI centrifugal blower is the centrifugal blower that the exit angle of fan blade is less than 90 degree.
The blade exhaust outlet limit of BI centrifugal blower common at present, without waveform, has pneumatic noise large, the shortcomings such as blast is low, and operational efficiency is low, and blade and upper cover, and base plate connects not firm, manufactures more difficult.
Summary of the invention
In order to solve the problem, the utility model provides a kind of BI centrifugal blower, and its blade exhaust outlet limit is zigzag fashion, makes the air of flowing and blade exhaust outlet edge contact area increase and realize shunting, thus reduces operating noise.
The scheme that the utility model solves its technical problem is:
A kind of BI centrifugal blower, primarily of motor, upper and lower cover plates and blade composition, be fixedly connected with at least a slice blade between upper and lower cover plates, the edge of the exhaust outlet side of described blade is zigzag fashion.
Preferably, the edge of the exhaust outlet side of described blade is triangular waveform or square waveform or sinusoidal waveform.
Preferably, the cross section of described upper and lower cover plates is annulus.
Preferably, described blade is arc-shaped curved surface, and its upper and lower two limits are fixedly connected with upper and lower two cover plates.
Preferably, described upper and lower cover plates adopts buckle to be fixedly connected with blade.
Preferably, the cross section of described buckle is rectangle, can through the rectangle attachment hole in upper and lower cover plates, and then the front end and back end of rotary buckle forms serpentine structure respectively, can be fixedly connected with.
Preferably, it is a fixing entirety that upper and lower cover plates and blade connect to form, and is driven rotate by motor.
The beneficial effects of the utility model are,
The utility model adopts zigzag design due to the exhaust outlet limit of blade, the air of flowing and the limit surface of contact of blade exhaust outlet is increased and realizes shunting, reduce the wind speed of unit area, thus effectively reduces the noise in blower fan work.The utility model adopts " S " bayonet connection in addition, easy to assembly.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is the utility model overall structure schematic diagram.
Fig. 2 is the buckle close-up schematic view of Fig. 1 Leaf and upper cover plate joint.
Fig. 3 is air outlet blade serrated edge close-up schematic view in Fig. 1.
Embodiment
As shown in Figure 1, the utility model forms primarily of motor 1, upper cover plate 2, lower cover plate 3 and blade 4.Be fixedly connected with multiple blade by buckle 5 between upper and lower cover plates, connect the fixing entirety of formation one with bolt or adpting flange and motor, driven by motor and rotate, air-flow enters blower interior by the circular hole of upper cover plate, and is flowed out by the space between blade.
Zigzag fashion 41 is processed on the limit of described blade exhaust outlet, makes the air of flowing and the limit engagement edge of blade exhaust outlet increase to realize shunting thus reduce and run noise.
The buckle that the utility model blade is connected with upper and lower cover plates, only needs bending buckle just can realize assembling, has manufacturing process simple, firm in structure, the little feature of computing ballance correction.
Be illustrated in figure 2 buckle structure enlarged diagram, described buckle is a part for blade top edge, after the rectangle attachment hole of upper cover plate, with spanner by bending for its front end and back end 90 degree of formation " S " types, blade can be fixed on upper cover plate.
As shown in Figure 3, the limit of the exhaust outlet of blade is zigzag fashion, also other shapes can be adopted, as triangular waveform or square waveform or sinusoidal waveform etc., reach the length increased to exhaust outlet limit, thus expand the surface of contact with air-flow, reduce the flow velocity of unit area, the noise brought thus reduction air flows.
Institute's blade uses material can select multiple, as: iron, aluminium, plastics etc., utilize cutting, punching press, the processing methods such as mould-forming process each part and blade edge waveform.
Those skilled in the art can carry out various remodeling and change to the utility model.Therefore, the utility model cover fall into appending claims and equivalent thereof scope in various remodeling and change.
Claims (7)
1. a BI centrifugal blower, primarily of motor, upper and lower cover plates and blade composition, it is characterized in that: be fixedly connected with at least a slice blade between upper and lower cover plates, the edge of the exhaust outlet side of described blade is zigzag fashion.
2. a kind of BI centrifugal blower according to claim 1, is characterized in that: the edge of the exhaust outlet side of described blade is triangular waveform or square waveform or sinusoidal waveform.
3. a kind of BI centrifugal blower according to claim 1, is characterized in that: the cross section of described upper and lower cover plates is annulus.
4. a kind of BI centrifugal blower according to claim 1 and 2, is characterized in that: described blade is arc-shaped curved surface, and its upper and lower two limits are fixedly connected with upper and lower two cover plates.
5. a kind of BI centrifugal blower according to claim 1, is characterized in that: described upper and lower cover plates adopts buckle to be fixedly connected with blade.
6. a kind of BI centrifugal blower according to claim 5, is characterized in that: the cross section of described buckle is rectangle, can through the rectangle attachment hole in upper and lower cover plates, and then the front end and back end of rotary buckle forms serpentine structure respectively.
7. a kind of BI centrifugal blower according to claim 1, is characterized in that: it is a fixing entirety that upper and lower cover plates and blade connect to form, and is driven rotate by motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420476843.4U CN204113686U (en) | 2014-08-22 | 2014-08-22 | A kind of BI centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420476843.4U CN204113686U (en) | 2014-08-22 | 2014-08-22 | A kind of BI centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204113686U true CN204113686U (en) | 2015-01-21 |
Family
ID=52331001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420476843.4U Expired - Fee Related CN204113686U (en) | 2014-08-22 | 2014-08-22 | A kind of BI centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204113686U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020175A (en) * | 2015-08-20 | 2015-11-04 | 莱克电气股份有限公司 | Rotor impeller and motor with same |
| CN112922898A (en) * | 2019-12-06 | 2021-06-08 | Lg电子株式会社 | Humidifying and purifying device |
-
2014
- 2014-08-22 CN CN201420476843.4U patent/CN204113686U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020175A (en) * | 2015-08-20 | 2015-11-04 | 莱克电气股份有限公司 | Rotor impeller and motor with same |
| CN112922898A (en) * | 2019-12-06 | 2021-06-08 | Lg电子株式会社 | Humidifying and purifying device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20150822 |
|
| EXPY | Termination of patent right or utility model |