CN2279463Y - Pneumatic scavenger fan with continuous waveform section blades - Google Patents
Pneumatic scavenger fan with continuous waveform section blades Download PDFInfo
- Publication number
- CN2279463Y CN2279463Y CN 96238919 CN96238919U CN2279463Y CN 2279463 Y CN2279463 Y CN 2279463Y CN 96238919 CN96238919 CN 96238919 CN 96238919 U CN96238919 U CN 96238919U CN 2279463 Y CN2279463 Y CN 2279463Y
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- CN
- China
- Prior art keywords
- utility
- model
- continuous wave
- blade
- cross
- 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 relates to the improvement of the structures of scavenger fans. The utility model comprises a machine seat. The utility model has the essential structure that the top and the bottom of the central shaft of the machine seat are respectively provided with an upper bearing and a lower bearing. A hollow ball body composed of blades in the shape of half moons is arranged between a press cover out of the upper bearing and a bracket out of the lower bearing, and the cross section of each blade in the shape of a half moon is in continuous waveform. The utility model has the advantages that the utility model which does not need a power supply can avoid the return flow of rain into rooms, etc.
Description
The utility model relates to the improvement of ventilation fan structure.
Mostly the ventilation fan of using on the building is electric fan at present, and the vitiated air in factory building, bathing pool, the room is discharged in the ambient atmosphere.But this ventilation fan needs people's control, and noise, power consumption source are arranged, and uses characteristics such as inconvenience.
The purpose of this utility model is exactly at the problems referred to above, provide a kind of need not the people control, need not the pneumatic ventilation fan of power supply.
The purpose of this utility model is achieved in that the utility model comprises support, its structure outline is that the top and the bottom of the central shaft of support is respectively arranged with upper bearing (metal), lower bearing, form hollow sphere by the semilune blade between gland that upper bearing (metal) is outer and the carriage outside the lower bearing, the cross section of first quarter moon blade is a continuous wave.
Major advantage of the present utility model:
1, without power supply:
Because the top and the bottom of the central shaft of support are respectively arranged with upper bearing (metal), lower bearing, form hollow sphere by the semilune blade between gland that upper bearing (metal) is outer and the carriage outside the lower bearing, the cross section of semilune blade is a continuous wave, even under the gentle breeze situation, also can make the hollow sphere rotation, produce very strong sucking-off power, remove indoor contaminated gas or water vapor etc.
2, can avoid rainwater to pour in down a chimney to indoor:
The utility model is to form hollow sphere by the semilune blade between the gland of upper bearing (metal) and the carriage outside the lower bearing, and rainwater all can flow through from the hollow sphere outside, will not pour in down a chimney to indoor, for the user provides convenience.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the enlarged diagram of semilune blade;
Fig. 3 is that the cross section of semilune blade is the structural representation of arc continuous wave;
Fig. 4 is that cross section is the structural representation of triangle continuous wave;
Below in conjunction with accompanying drawing concrete structure of the present utility model is described further.
The utility model comprises support 1, the top of the central shaft 9 of support 1 has upper bearing (metal) 10, lower bearing 5, form hollow sphere 6 by semilune blade 7 between the carriage 4 outside gland 8 outside the upper bearing (metal) 10 and the lower bearing 5, the cross section of semilune blade 7 is a continuous wave 12.
Claims (3)
1, the pneumatic ventilation fan of continuous wave cross section blade comprises support (1), the top and the bottom that it is characterized in that the central shaft (9) of support (1) have upper bearing (metal) (10), lower bearing (5) respectively, form hollow sphere (6) by semilune blade (7) between gland (8) that upper bearing (metal) (10) is outer and the carriage (4) outside the lower bearing (5), the cross section of semilune blade (7) is continuous wave (12).
2, the pneumatic ventilation fan of continuous wave according to claim 1 cross section blade is characterized in that continuous wave (12) is arc (a 13) continuous wave.
3, the pneumatic ventilation fan of continuous wave according to claim 1 cross section blade is characterized in that continuous wave (12) is triangle (a 14) continuous wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96238919 CN2279463Y (en) | 1996-10-29 | 1996-10-29 | Pneumatic scavenger fan with continuous waveform section blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96238919 CN2279463Y (en) | 1996-10-29 | 1996-10-29 | Pneumatic scavenger fan with continuous waveform section blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2279463Y true CN2279463Y (en) | 1998-04-22 |
Family
ID=33914093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96238919 Expired - Fee Related CN2279463Y (en) | 1996-10-29 | 1996-10-29 | Pneumatic scavenger fan with continuous waveform section blades |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2279463Y (en) |
-
1996
- 1996-10-29 CN CN 96238919 patent/CN2279463Y/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 |