CN206299588U - Axial flow blower with zero clearance formula fan air drum - Google Patents
Axial flow blower with zero clearance formula fan air drum Download PDFInfo
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- CN206299588U CN206299588U CN201621303518.3U CN201621303518U CN206299588U CN 206299588 U CN206299588 U CN 206299588U CN 201621303518 U CN201621303518 U CN 201621303518U CN 206299588 U CN206299588 U CN 206299588U
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- air duct
- impeller
- air
- zero clearance
- impeller blade
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Abstract
The utility model discloses a kind of axial flow blower with zero clearance formula fan air drum, including air duct, motor, electric machine support and impeller, it is characterized in that air duct wall correspondence impeller blade is circumferentially with annular groove, the impeller blade outer end coordinates with annular groove inwall gap, and the external profile diameter of the impeller blade is equal with the diameter of bore of air duct, the zero clearance of impeller blade outer end and air duct inwall is realized in air-flow approach axis, the air return at blade tip blade tip is greatly reduced, fan efficiency is improve 2%.With structure is novel, fan performance is good, the advantages of high working efficiency.
Description
Technical field
The utility model is related to blower fan technical field, specifically a kind of axle stream wind with zero clearance formula fan air drum
Machine.
Background technology
Draught fan impeller rotates in air duct, the gap between impeller and air duct, is typically designed to the 0.25%-0.5% of diameter,
Gap design purpose be mainly consideration security, can not be rubbed with static element during wheel rotation, but gap presence
Fan efficiency is caused to decline, gap is bigger, fan efficiency is lower.So actual draught fan impeller and air duct gap are smaller, blower fan effect
Rate is higher.
The content of the invention
The purpose of this utility model is to solve above-mentioned the deficiencies in the prior art, there is provided a kind of structure is novel, fan performance is good,
The axial flow blower with zero clearance fan air drum of high working efficiency.
The utility model solves the technical scheme that its technical problem used：
A kind of axial flow blower with zero clearance formula fan air drum, including air duct, motor, electric machine support and impeller, it is special
It is that air duct wall correspondence impeller blade is circumferentially with annular groove to levy, and the impeller blade outer end is matched somebody with somebody with annular groove inwall gap
Close, and the external profile diameter of the impeller blade and the diameter of bore of air duct are equal, and impeller blade is realized in air-flow approach axis
Outer end and the zero clearance of air duct inwall, greatly reduce the air return at blade tip blade tip, improve fan efficiency
2%。
The present invention due to using above-mentioned, with structure is novel, fan performance is good, the advantages of high working efficiency.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Reference：Air duct 1, motor 2, electric machine support 3, impeller 4, blade 5, annular groove 6.
Specific embodiment
The present invention is further described below in conjunction with the accompanying drawings：
As shown in drawings, a kind of axial flow blower with zero clearance formula fan air drum, including air duct 1, motor 2, motor branch
Motor 2 and impeller 4 are provided with frame 3 and impeller 4, the air duct 1, the motor 2 is fixed through electric machine support 3 and the inwall of air duct 1 and connected
Connect, the axle stretch end of the motor 2 is connected with impeller 4, the periphery circumference array of the impeller 4 is provided with blade 5, it is characterised in that wind
The cylinder 1 wall correspondence blade 5 of impeller 4 is circumferentially with annular groove 6, and the outer end of the impeller blade 5 is matched somebody with somebody with the inwall gap of annular groove 6
Close, and the external profile diameter of the impeller blade 6 is equal with the diameter of bore of air duct 1, and impeller leaf is realized in air-flow approach axis
The outer end of piece 5 and the zero clearance of the inwall of air duct 1, greatly reduce the air return at blade tip blade tip, put forward fan efficiency
It is high by 2%.
Operationally, electric motor starting, impeller rotation rotates, due to leaf the utility model in blade annular recess
The outer diameter of piece is identical with air duct inner diameter so that enter the air-flow of air duct quickly by water conservancy diversion, it is to avoid blade outer end leaf
Sharp place produces air return due to having gap between air duct inwall, drastically increases the operating efficiency of blower fan, makes blower fan
Efficiency improves 2%.
The present invention due to using above-mentioned, with structure is novel, fan performance is good, the advantages of high working efficiency.
Claims (1)
1. a kind of axial flow blower with zero clearance formula fan air drum, including air duct, motor, electric machine support and impeller, its feature
It is that air duct wall correspondence impeller blade is circumferentially with annular groove, the impeller blade outer end is matched somebody with somebody with annular groove inwall gap
Close, and the external profile diameter of the impeller blade and the diameter of bore of air duct are equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621303518.3U CN206299588U (en) | 2016-11-30 | 2016-11-30 | Axial flow blower with zero clearance formula fan air drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621303518.3U CN206299588U (en) | 2016-11-30 | 2016-11-30 | Axial flow blower with zero clearance formula fan air drum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206299588U true CN206299588U (en) | 2017-07-04 |
Family
ID=59212083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621303518.3U Active CN206299588U (en) | 2016-11-30 | 2016-11-30 | Axial flow blower with zero clearance formula fan air drum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206299588U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963461A (en) * | 2020-08-12 | 2020-11-20 | 西安陕鼓动力股份有限公司 | Novel disrotatory fan |
| CN117948290A (en) * | 2024-03-22 | 2024-04-30 | 河北冀力重型机械设备有限公司 | High-air-volume high-pressure axial flow fan |
-
2016
- 2016-11-30 CN CN201621303518.3U patent/CN206299588U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963461A (en) * | 2020-08-12 | 2020-11-20 | 西安陕鼓动力股份有限公司 | Novel disrotatory fan |
| CN117948290A (en) * | 2024-03-22 | 2024-04-30 | 河北冀力重型机械设备有限公司 | High-air-volume high-pressure axial flow fan |
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