CN2324219Y - Large and small louver sheet scavenger fan - Google Patents
Large and small louver sheet scavenger fan Download PDFInfo
- Publication number
- CN2324219Y CN2324219Y CN 97245728 CN97245728U CN2324219Y CN 2324219 Y CN2324219 Y CN 2324219Y CN 97245728 CN97245728 CN 97245728 CN 97245728 U CN97245728 U CN 97245728U CN 2324219 Y CN2324219 Y CN 2324219Y
- Authority
- CN
- China
- Prior art keywords
- blade
- utility
- model
- fan
- motor
- 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
Links
Abstract
The utility model relates to a shutter type scavenger fan which comprises a frame, a motor, fan blades, etc. The utility model is characterized in that shutter blades are in large and small structures, the middle shutter blade is a large blade, and the upper and the lower shutter blades are small blades. The utility model has the advantages of favorable sealing effect, thin integral structure, etc.
Description
The utility model relates to a kind of ventilation fan.
Ventilation fan is exhaust fan again, is used for the exchange of indoor-outdoor air, promotes the room air circulation, improves air quality.Present ventilation fan mostly is venetian blind type, is provided with shutter behind fan blade, can prevent that air from flowing backwards and prevent the invasion and attack of rainwater etc.But there is certain shortcoming in existing shutter, the one, because each blade equal and opposite in direction, weight is lighter, and sagging power is not enough, closes tight inadequately automatically; The 2nd, the position commentaries on classics of the leaf of shutter must be positioned at after the motor, causes whole ventilation fan thicker, and volume is bigger.
The purpose of this utility model is the shortcoming that overcomes prior art, provides a kind of compact conformation, volume thinner, and the leaf of shutter is closed tighter venetian blind type ventilation fan automatically.
For achieving the above object, the utility model is made big and small blade with louvre blade, and wherein, a slice that middle a slice promptly is positioned at the motor back is bigger, and upper and lower blade is less.The rotating shaft of big blade is provided with the blower fan top, and its transposition is positioned at before the blower fan end, makes the attenuation of ventilation fan overall structure; Simultaneously, the weight of big blade is heavier, and its center of gravity is also far away from rotating shaft, and therefore sagging power is bigger, and when stopping air draft, louvre blade is closed reliability automatically and improved, and is also tighter.
Below in conjunction with drawings and Examples the utility model is further described.
Accompanying drawing is the utility model structural representation.
With reference to accompanying drawing, the utility model comprises framework (1), motor (2), fan blade (3) and louvre blade (4,5), louvre blade (4,5) can be connected with trace (6) between, also comprise face shield in case of necessity, innovation part of the present utility model is: louvre blade (4,5) louvre blade in the middle of in is big blade (4), and upper and lower louvre blade is vanelets (5); The rotating shaft (7) of big blade (4) is positioned on the motor (2); Big blade (4) is positioned at motor (2) rear side when sagging.
Advantage of the present utility model is mainly reflected under the overall structure attenuation, louvre blade of ventilation fan Obturation effect is good when hanging down.
Claims (1)
1. one kind big or small louvre blade ventilation fan, comprise framework (1), motor (2), fan blade (3) and louvre blade (4,5), louvre blade (4,5) can be connected with trace (6) between, also comprise in case of necessity it is characterized in that face shield: louvre blade (4,5) louvre blade in the middle of in is big blade (4), and upper and lower louvre blade is vanelets (5); The rotating shaft (7) of big blade (4) is positioned on the motor (2); Big blade (4) is positioned at motor (2) rear side when sagging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97245728 CN2324219Y (en) | 1997-10-10 | 1997-10-10 | Large and small louver sheet scavenger fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97245728 CN2324219Y (en) | 1997-10-10 | 1997-10-10 | Large and small louver sheet scavenger fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2324219Y true CN2324219Y (en) | 1999-06-16 |
Family
ID=33954127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97245728 Expired - Fee Related CN2324219Y (en) | 1997-10-10 | 1997-10-10 | Large and small louver sheet scavenger fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2324219Y (en) |
-
1997
- 1997-10-10 CN CN 97245728 patent/CN2324219Y/en not_active Expired - Fee Related
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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 |