CN2317268Y - Axial flow roof ventilator - Google Patents
Axial flow roof ventilator Download PDFInfo
- Publication number
- CN2317268Y CN2317268Y CN 97249957 CN97249957U CN2317268Y CN 2317268 Y CN2317268 Y CN 2317268Y CN 97249957 CN97249957 CN 97249957 CN 97249957 U CN97249957 U CN 97249957U CN 2317268 Y CN2317268 Y CN 2317268Y
- Authority
- CN
- China
- Prior art keywords
- air
- model
- utility
- axial flow
- air cylinder
- 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 an axial flow ventilator for roofs, which mainly comprises a base frame 1, an air cylinder 2, an axial flow fan and an air cap 5, wherein the air cylinder 2 is fixed on the base frame 1, an axial flow fan is arranged in the air cylinder and is composed of an impeller 3 and a motor 4, and the air cap 5 is fixed on the upper part of the air cylinder. The utility model is characterized in that the middle 6 of the air cap has a streamline-shaped concave structure. When the utility model is used, air vented by the fan flows out from bottom to top in the air cylinder, is influenced by the streamline-shaped concave structure at the middle of the air cap and is vented outwards along the edge of the air cap. The utility model has better flow guide effect and can effectively reduce the damage of an exhaust segment when the fan works. The utility model has obvious energy saving effect and can increase air exhaust quantity. The utility model can be used for air exhaust in workshops of a factory and can also be matched with a hot and cold exchange cooling tower of a central air conditioner.
Description
The utility model relates to a kind of architecture advances of axial-flow type roof ventilation device, belongs to the technical field of ventilation equipment.
The blast cap that has roof ventilation device now is simple semicircle shape structure, and the air of being discharged by blower fan when work more easily circles round at the blast cap middle part and produces the resistance damage, has influenced the energy-saving and noise-reducing effect.
The purpose of this utility model provides a kind of reasonable in design, has the axial-flow type roof ventilation device of obvious energy-saving and noise-reducing effect.
The utility model is the axial-flow type roof ventilation device, mainly comprise base frame 1, be fixed in the air duct 2 on the base frame 1, place the axial flow blower that constitutes by impeller 3 and motor 4 in the air duct, be fixed in the blast cap 5 on air duct top, it is characterized in that described blast cap middle part 6 is streamline shape concave structure.During use,, influenced by the streamline shape concave structure at blast cap middle part, discharge along the blast cap edge by air bottom-up outflow in air duct that blower fan is discharged.
Another technical scheme of the present utility model is on the described impeller 3 the 4-8 sheet can be set circumferentially to be the sweepforward shape, the axially sweeping curved shape blade 7 of plunderring.Make the better energy-saving and noise-reducing effect that the utlity model has.
The utility model reasonable in design, the middle part is the blast cap of streamline shape concave structure, has guide functions preferably, discharging the resistance of section in the time of effectively reducing blower fan work decreases, energy-saving effect is obvious, can also improve exhaust air rate, change is simultaneously plunderred being provided with of shape blade and can further be reduced noise, makes the utility model more become perfect.The utility model can be applicable to the factory floor air draft, also can supporting use on the cold and hot exchange cooling tower of central air-conditioning.
Accompanying drawing has provided structural representation of the present utility model:
Fig. 1 is overall structure of the present utility model and partial sectional view;
Fig. 2 is the side structure schematic diagram of impeller described in the utility model.
Below in conjunction with embodiment the utility model is further described:
Select the high-quality macromolecular material for use, making middle part 6 on mould, to be the glass fiber reinforced plastic blast cap 5 and the cylindrical glass steel air duct 2 of streamline shape concave structure standby, by the installation requirement of common axial flow roof ventilation device respectively with assembling moulding such as blast cap 5, air duct 2, motor 4, impeller 3 and be fixed on the base frame 1 and get final product.
Claims (2)
1, a kind of axial-flow type roof ventilation device, comprise base frame (1), be fixed in the air duct (2) on the base frame, place the axial flow blower that constitutes by impeller (3) and motor (4) in the air duct, be fixed in the blast cap (5) on air duct top, it is characterized in that described blast cap middle part (6) is streamline shape concave structure.
2, by the described axial-flow type roof ventilation device of claim 1, it is characterized in that can be provided with 4～8 on the described impeller (3) circumferentially is the sweepforward shape, the axially sweeping curved shape blade (7) of plunderring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97249957 CN2317268Y (en) | 1997-11-24 | 1997-11-24 | Axial flow roof ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97249957 CN2317268Y (en) | 1997-11-24 | 1997-11-24 | Axial flow roof ventilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2317268Y true CN2317268Y (en) | 1999-05-05 |
Family
ID=33956718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97249957 Expired - Fee Related CN2317268Y (en) | 1997-11-24 | 1997-11-24 | Axial flow roof ventilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2317268Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588343A (en) * | 2012-04-01 | 2012-07-18 | 上海尔华杰机电装备制造有限公司 | Flexible hood of fan |
-
1997
- 1997-11-24 CN CN 97249957 patent/CN2317268Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588343A (en) * | 2012-04-01 | 2012-07-18 | 上海尔华杰机电装备制造有限公司 | Flexible hood of fan |
| CN102588343B (en) * | 2012-04-01 | 2016-02-24 | 上海尔华杰机电装备制造有限公司 | A kind of flexible hood of blower 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 |