CN202031845U - Centrifugal wall type fan - Google Patents
Centrifugal wall type fan Download PDFInfo
- Publication number
- CN202031845U CN202031845U CN2011201171362U CN201120117136U CN202031845U CN 202031845 U CN202031845 U CN 202031845U CN 2011201171362 U CN2011201171362 U CN 2011201171362U CN 201120117136 U CN201120117136 U CN 201120117136U CN 202031845 U CN202031845 U CN 202031845U
- Authority
- CN
- China
- Prior art keywords
- air
- centrifugal
- wall type
- square
- air duct
- 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 centrifugal wall type fan, which comprises an air barrel. The air barrel is provided with an air inlet and an air outlet, the cross section of the air barrel is square, an outer rotor motor is fixed at the center of an axis of the air barrel, a centrifugal impeller is fixed on an outer rotor of the outer rotor motor, and a flow collector is disposed between the centrifugal impeller and the air inlet. Noise reduction cotton is arranged on the inner wall of a barrel body of the air barrel. The air outlet is fixed with a rainproof elbow, and the cross section of the rainproof elbow is square. The centrifugal wall type fan adopts the outer rotor motor and the centrifugal impeller, and accordingly is lower in operation noise under the condition of meeting requirements of air quantity and air pressure. The air barrel with the square section enables the section of the rainproof elbow matching with the air barrel to be square, so that the rainproof elbow can be manufactured more conveniently.
Description
Technical field
The utility model relates to a kind of ventilation equipment, relates to a kind of wall type blower fan that adopts centrifugal blower fan blade wheel specifically.
Background technique
Existing factory building and warehouse forced ventilation system are generally selected axial flow wall type blower fan or roof ventilator for use, consider from the installation and maintenance aspect, select for use the more of axial flow wall type blower fan is installed.Though it is big to select for use axial flow wall type blower fan to have an air quantity, easy for installation, the advantage of equipment purchase less investment, but its noise is bigger, in addition, is spilled into from axial flow wall type blower fan for preventing rain, axial flow wall type blower fan also requires manufacturer to join rainproof elbow in addition, because the urceolus of axial flow wall type blower fan is circular, require rainproof elbow also for circular, but circular rainproof elbow production technology relative complex.As adopt stormproof louvre, and then can have certain inhibition to air-flow, reduce fan efficiency.
The model utility content
For overcoming above-mentioned defective, the utility model aims to provide a kind of novel centrifugal wall type blower fan fully, and it had both had air quantity advantage big, easy for installation, had low, the rainproof elbow-making of noise characteristics easily simultaneously concurrently.
For achieving the above object, the technical solution adopted in the utility model is: a kind of centrifugal wall type blower fan, comprise an air duct, described air duct has an intake grill and an exhaust outlet, the cross section of described air duct is square, the axis centre of described air duct is fixed with an external rotor electric machine, is fixed with a centrifugal impeller on the external rotor of described external rotor electric machine, is provided with slip ring between described centrifugal impeller and the intake grill.
The cylinder inboard wall of described air duct is provided with the noise reduction cotton.
Described exhaust outlet is fixed with a rainproof elbow, and the cross section of described rainproof elbow is square.
Adopted centrifugal wall type blower fan of the present utility model, owing to adopted external rotor electric machine to add centrifugal impeller, under the condition that satisfies air quantity, blast, its running noises is lower.Simultaneously, the air duct of square-section makes the cross section of the rainproof elbow supporting with it also can make the making of rainproof elbow convenient for square.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1-air duct, 2-intake grill, 3-exhaust outlet, 4-external rotor electric machine, 5-centrifugal impeller, 6-slip ring, 7-noise reduction cotton, the rainproof elbow of 8-.
Embodiment
The utility model discloses a kind of centrifugal wall type blower fan, comprise an air duct 1, described air duct 1 has an intake grill 2 and an exhaust outlet 3, its innovative point is that mainly the cross section of described air duct 1 is square, square air duct 1 is made convenient, the axis centre of described air duct 1 is fixed with an external rotor electric machine 4, be fixed with a centrifugal impeller 5 on the external rotor of described external rotor electric machine 4, be provided with slip ring 6 between described centrifugal impeller 5 and the intake grill 2, the air-flow that enters in the air duct 1 is more smooth and easy under the rectified action of slip ring 6, has effectively reduced the running noises of blower fan.Simultaneously,, the axial dimension of whole blower fan is reduced greatly, both saved cost of material, make the easier for installation of blower fan again owing to adopted external rotor electric machine 4.
In order more to advance a bit to reduce the noise of blower fan, the cylinder inboard wall of the air duct 1 of centrifugal wall type blower fan of the present utility model is provided with noise reduction cotton 7.
Described exhaust outlet 3 is fixed with a rainproof elbow 8, and the cross section of described rainproof elbow 8 is square.Because the air duct 1 of square-section makes the cross section of the rainproof elbow 8 supporting with it also can make the making of rainproof elbow convenient for square.
Claims (3)
1. centrifugal wall type blower fan, comprise an air duct (1), described air duct (1) has an intake grill (2) and an exhaust outlet (3), the cross section that it is characterized in that described air duct (1) is square, the axis centre of described air duct (1) is fixed with an external rotor electric machine (4), be fixed with a centrifugal impeller (5) on the external rotor of described external rotor electric machine (4), be provided with slip ring (6) between described centrifugal impeller (5) and the intake grill (2).
2. centrifugal wall type blower fan according to claim 1 is characterized in that the cylinder inboard wall of described air duct (1) is provided with noise reduction cotton (7).
3. centrifugal wall type blower fan according to claim 1 is characterized in that described exhaust outlet (3) is fixed with a rainproof elbow (8), and the cross section of described rainproof elbow (8) is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201171362U CN202031845U (en) | 2011-04-20 | 2011-04-20 | Centrifugal wall type fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201171362U CN202031845U (en) | 2011-04-20 | 2011-04-20 | Centrifugal wall type fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202031845U true CN202031845U (en) | 2011-11-09 |
Family
ID=44894143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201171362U Expired - Fee Related CN202031845U (en) | 2011-04-20 | 2011-04-20 | Centrifugal wall type fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202031845U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640767A (en) * | 2016-12-27 | 2017-05-10 | 四川宜宾力源电机有限公司 | Rain-proof fan cover for centrifugal fan |
-
2011
- 2011-04-20 CN CN2011201171362U patent/CN202031845U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640767A (en) * | 2016-12-27 | 2017-05-10 | 四川宜宾力源电机有限公司 | Rain-proof fan cover for centrifugal fan |
| CN106640767B (en) * | 2016-12-27 | 2023-07-28 | 四川宜宾力源电机有限公司 | Rainproof fan cover for centrifugal fan |
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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: 20111109 Termination date: 20150420 |
|
| EXPY | Termination of patent right or utility model |