CN201554666U - Two-stage axial-flow fan - Google Patents
Two-stage axial-flow fan Download PDFInfo
- Publication number
- CN201554666U CN201554666U CN2009201899866U CN200920189986U CN201554666U CN 201554666 U CN201554666 U CN 201554666U CN 2009201899866 U CN2009201899866 U CN 2009201899866U CN 200920189986 U CN200920189986 U CN 200920189986U CN 201554666 U CN201554666 U CN 201554666U
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- impeller
- stage
- blower
- flow
- impellers
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Abstract
The utility model discloses a two-stage axial-flow fan. The two-stage axial-flow fan comprises a fan drum; impellers, a motor and a guide vane are arranged in the fan drum; output shafts are arranged at two ends of the motor; the impellers comprise an impeller I and an impeller II; the impeller I and the impeller II are fixed on the output shafts at two ends of the motor respectively. Due to adoption of the scheme, blower pressure generated by the blower is the sum of pressure generated by the two-stage impellers; the flow rates of the two-stage impellers are similar; and the total flow rate of the blower is similar to the flow rates of the two-stage impellers. The outlet airflow of the first stage impeller and the inlet airflow of the second stage impeller can be adjusted through the guide vane with a special structure between the two-stage impellers in the blower, so that the airflow maintains smooth in the entire blower. In the improved scheme of a monaxial and single-power two-stage axial-flow fan, the pressure of the blower is improved through the two-stage impellers, but the flow rate of the blower is constant; and the two-stage impellers are mounted on the same motor, thereby simplifying the structure of the blower. The utility model has the advantages of compact structure, unique idea and novel design.
Description
Technical field
The utility model relates to a kind of axial-flow blower, and a kind of couple-stage axial-flow fans of more specifically saying so is applicable to the axial-flow blower of elevated pressures to belong to blower fan and ventilating engineering technical field.
Background technique
According to the development trend of ventilating engineering, the underground systems engineering of each big and medium-sized cities is more and more, grades as the underground part of various subways, tall building.These underground systems engineering spaces are more and more huger, and structure also becomes increasingly complex, wherein axial-flow blower in ventilation system in occupation of consequence.Because these huge and complicated underground systems engineerings have and are based upon underground particularity, for ensureing the reasonable disposition of these underground systems engineering ventilation systems, ventilation system have been proposed the requirement of high pressure and compact structure.
Existing situation generally adopts the rotating speed that increases blower fan or increases the demand that the blower fan model reaches elevated pressures.But, no matter take the sort of way all can produce different drawbacks, not that to have increased physical dimension be exactly to have influenced not matching of pressure and flow, caused waste.
The model utility content
At above-mentioned situation, the problem that the utility model quasi-solution is determined provides a kind of couple-stage axial-flow fans that had not only had elevated pressures coefficient but also compact structure, to satisfy the requirement of underground systems engineering ventilation system, and simultaneously can build-up of pressure and the unmatched waste of flow.
For achieving the above object, the utility model is by the following technical solutions: a kind of couple-stage axial-flow fans, comprise air duct, impeller, motor and stator in described air duct, the two ends of described motor have output shaft, described impeller is included as impeller one and impeller two, and described impeller one, impeller two are separately fixed on the output shaft at motor two ends.
Described impeller one can be axial-flow blower or mixed flow impeller or diagonal impeller; Described impeller two also can be axial-flow blower or mixed flow impeller or diagonal impeller.Described stator is between impeller one, impeller two.
Adopt such scheme, couple-stage axial-flow fans of the present utility model has two impellers, and the blower pressure that is produced is the pressure sum that both stage impellers produces, and the flow of both stage impellers is close, and the total discharge of blower fan and the flow of both stage impellers are also close.Blower fan passes through the adjustment of the stator of special construction between the both stage impellers to first order impeller outlet air-flow and second level impeller inlet air-flow, makes air-flow keep smooth and easy in whole blower fan.Single shaft, single action power couple-stage axial-flow fans in improvement project, have improved the pressure of blower fan and the flow of blower fan is constant by both stage impellers, and both stage impellers is installed on same the motor, has simplified the structure of blower fan.The utility model compact structure, theory uniqueness, modern design.
Description of drawings
Fig. 1 is the structural representation of the utility model couple-stage axial-flow fans.
Among the figure: 1-air duct, 2-stator, 3-motor, 4-output shaft, 5-impeller one, 6-impeller two
Embodiment
As shown in the figure, couple-stage axial-flow fans of the present utility model comprises air duct 1, impeller, motor 3 and stator 2 in described air duct 1, and said structure and prior art are similar, therefore are not described in detail here.
The characteristics of couple-stage axial-flow fans of the present utility model are: the two ends of described motor 3 have output shaft 4, and described impeller is included as impeller 1 and impeller 26, and described impeller 1, impeller 26 are separately fixed on the output shaft 4 at motor two ends.Described impeller 1 can be axial-flow blower or mixed flow impeller or diagonal impeller (Fig. 1 is example with the axial-flow blower).Described impeller 26 is axial-flow blower or mixed flow impeller or diagonal impeller (Fig. 1 is example with the axial-flow blower).Described stator 2 is between impeller 1, impeller 26.
Claims (4)
1. couple-stage axial-flow fans, comprise air duct (1), impeller, motor (3) and stator (2) in described air duct (1), the two ends that it is characterized in that described motor (3) have output shaft (4), described impeller is included as impeller one (5) and impeller two (6), and described impeller one (5), impeller two (6) are separately fixed on the output shaft (4) at motor two ends.
2. couple-stage axial-flow fans according to claim 1 is characterized in that described impeller one (5) is axial-flow blower or mixed flow impeller or diagonal impeller.
3. couple-stage axial-flow fans according to claim 1 and 2 is characterized in that described impeller two (6) is axial-flow blower or mixed flow impeller or diagonal impeller.
4. couple-stage axial-flow fans according to claim 1 is characterized in that described stator (2) is between impeller one (5), impeller two (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201899866U CN201554666U (en) | 2009-07-31 | 2009-07-31 | Two-stage axial-flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201899866U CN201554666U (en) | 2009-07-31 | 2009-07-31 | Two-stage axial-flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201554666U true CN201554666U (en) | 2010-08-18 |
Family
ID=42614348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201899866U Expired - Fee Related CN201554666U (en) | 2009-07-31 | 2009-07-31 | Two-stage axial-flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201554666U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777402A (en) * | 2012-07-10 | 2012-11-14 | 广东美的电器股份有限公司 | Air supply device and air-conditioning indoor unit |
| CN109268288A (en) * | 2018-09-20 | 2019-01-25 | 句容市江电电器机械有限公司 | A kind of axial flow blower of power distribution cabinet |
-
2009
- 2009-07-31 CN CN2009201899866U patent/CN201554666U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777402A (en) * | 2012-07-10 | 2012-11-14 | 广东美的电器股份有限公司 | Air supply device and air-conditioning indoor unit |
| CN102777402B (en) * | 2012-07-10 | 2016-01-20 | 美的集团股份有限公司 | Air-supply arrangement and indoor apparatus of air conditioner |
| CN109268288A (en) * | 2018-09-20 | 2019-01-25 | 句容市江电电器机械有限公司 | A kind of axial flow blower of power distribution cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG SHANGFENG HIGH TECHNOLOGY ZHUANFENG INDUS Free format text: FORMER NAME: SHANGYU SPECIAL FANS CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 312300 Shangyu City, Shaoxing province people's Road West, No. Patentee after: ZHEJIANG SHANGFENG GAOKE SPECIAL FAN INDUSTRY CO., LTD. Address before: 312300 No. 438 Renmin West Road, Zhejiang, Shangyu Patentee before: Shangyu Special Fans Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20170731 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |