CN2592920Y - Low-noise centrifugal fan for roofing - Google Patents
Low-noise centrifugal fan for roofing Download PDFInfo
- Publication number
- CN2592920Y CN2592920Y CN 02292878 CN02292878U CN2592920Y CN 2592920 Y CN2592920 Y CN 2592920Y CN 02292878 CN02292878 CN 02292878 CN 02292878 U CN02292878 U CN 02292878U CN 2592920 Y CN2592920 Y CN 2592920Y
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- CN
- China
- Prior art keywords
- electric machine
- blast cap
- type electric
- noise
- low
- 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 a low-noise centrifugal roof fan, which comprises a casing, a base, an air collecting hood, a centrifugal impeller and a disk type electric machine. The utility model is characterized in that the centrifugal impeller is connected with the disk type electric machine, and a blast cap is arranged on the disk type electric machine. The blast cap is a bowl-shaped hood which is buckled inversely, the middle part of the bowl-shaped hood is fixedly connected to the casing by a vertical post, and an air opening at the edge side of the blast cap is downward. The utility model has the advantage that the running noise of the roof fans can be greatly reduced (reduced by about 10 decibel) to meet the requirements to the low noise of the ventilation equipment of some detection laboratories and high-grade office buildings.
Description
Technical field
The utility model relates to a kind of centrifugal blower, particularly a kind of low-noise centrifugal roof ventilator.
Background technique
At present the prior roofs blower fan generally uses axial-flow blower, and it exists noise height, shortcoming that pressure coefficient is low, just can not satisfy user's requirement to the demanding occasion of noise such as laboratory, medical institutions etc. at some.
Summary of the invention
The purpose of this utility model is that the prior roofs blower fan generally uses axial-flow blower in the solution prior art, it exists noise height, shortcoming that pressure coefficient is low, just can not satisfy the problem of customer requirements to the demanding occasion of noise such as laboratory, medical institutions etc. at some.The utility model design low-noise centrifugal roof ventilator, comprise casing, base, wind-collection cover, centrifugal impeller, disc type electric machine, it is characterized in that: the centrifugal impeller on base connects a disc type electric machine, one blast cap is arranged on the disc type electric machine, blast cap is the bowl-type cover of a left-hand thread, the middle part of bowl-type cover is fixedly connected on the casing by column, and the air port of blast cap avris is downward.The utility model has the advantages that the running noise (reducing about 10 decibels) that can lower roof ventilator significantly, satisfy the requirement of some test experience chambers and senior office building for the low noise of ventilation equipment.
Description of drawings
Below in conjunction with drawings and Examples the utility model is elaborated, accompanying drawing is a structural representation of the present utility model,
Comprise casing 1, base 2, wind-collection cover 3, centrifugal impeller 4, disc type electric machine 5 among the embodiment figure, it is characterized in that: the centrifugal impeller 4 on base 2 connects a disc type electric machine 5, one blast cap 6 is arranged on the disc type electric machine 5, blast cap 6 is the bowl-type cover of a left-hand thread, blast cap 6 middle parts are fixedly connected on the casing 1 by column 7, the air port 8 of blast cap 6 avris is downward, under same air quantity and blast, and the noise that centrifugal blower can reduce greatly.
Claims (1)
1, low-noise centrifugal roof ventilator, comprise casing, base, wind-collection cover, centrifugal impeller, disc type electric machine, it is characterized in that: the centrifugal impeller on base connects a disc type electric machine, one blast cap is arranged on the disc type electric machine, blast cap is the bowl-type cover of a left-hand thread, the middle part of bowl-type cover is fixedly connected on the casing by column, and the air port of blast cap avris is downward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02292878 CN2592920Y (en) | 2002-12-31 | 2002-12-31 | Low-noise centrifugal fan for roofing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02292878 CN2592920Y (en) | 2002-12-31 | 2002-12-31 | Low-noise centrifugal fan for roofing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2592920Y true CN2592920Y (en) | 2003-12-17 |
Family
ID=33751031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02292878 Expired - Fee Related CN2592920Y (en) | 2002-12-31 | 2002-12-31 | Low-noise centrifugal fan for roofing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2592920Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102109206A (en) * | 2009-10-17 | 2011-06-29 | J·曾巴法 | Wind-powered ventilator that creates positive and negative pressures |
| CN103912509A (en) * | 2013-01-05 | 2014-07-09 | 上海涌华通风设备有限公司 | Meridionally-accelerated mixed-flow fan |
| CN106705195A (en) * | 2017-02-13 | 2017-05-24 | 李台 | Air cycle fan |
-
2002
- 2002-12-31 CN CN 02292878 patent/CN2592920Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102109206A (en) * | 2009-10-17 | 2011-06-29 | J·曾巴法 | Wind-powered ventilator that creates positive and negative pressures |
| CN102109206B (en) * | 2009-10-17 | 2015-01-14 | J·曾巴法 | Wind-powered ventilator that creates positive and negative pressures |
| CN103912509A (en) * | 2013-01-05 | 2014-07-09 | 上海涌华通风设备有限公司 | Meridionally-accelerated mixed-flow fan |
| CN106705195A (en) * | 2017-02-13 | 2017-05-24 | 李台 | Air cycle 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 |