CN2243560Y - Opposite axial blower equipped with two stage impellers with different diameters - Google Patents
Opposite axial blower equipped with two stage impellers with different diameters Download PDFInfo
- Publication number
- CN2243560Y CN2243560Y CN 96209138 CN96209138U CN2243560Y CN 2243560 Y CN2243560 Y CN 2243560Y CN 96209138 CN96209138 CN 96209138 CN 96209138 U CN96209138 U CN 96209138U CN 2243560 Y CN2243560 Y CN 2243560Y
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- impeller
- fan
- impellers
- axial
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Abstract
The utility model relates to an oppositely rotating axial flow fan device provided with two stage impellers with different diameters apparatus. In the axial flow fan of the oppositely rotating structure of the utility model, the flowing state of air flow between a two-stage impeller and a first stage impeller can be improve, when the diameter of the two stage impeller is bigger than the diameter of a one stage impeller; therefore, energy loss is reduced; moreover, the static pressure efficiency of the device of the impellers can be improved.
Description
The utility model relates to a kind of to revolving the axial-flow blower device of structure, and especially a kind of both stage impellers diameter is unequal to the axial flow rotary blower fan apparatus.
Traditional blade row system to revolving the axis of no-feathering flow fan forms with 2 grades two the identical impellers of diameter by 1 grade.The sense of rotation of both stage impellers and blade geometric shape are opposite each other.Its device static pressure efficiency is higher than the plain shaft flow fan, is efficient type.But because the equal diameters of the two poles of the earth impeller makes the air flow energy between the two-wheeled still have loss.
The purpose of this utility model is to provide a kind of the two poles of the earth impeller diameter unequal to the axial flow rotary blower fan apparatus, thereby it can effectively solve the static pressure efficiency of the problem raising device proper of flowed energy loss between the draught fan impeller.
The purpose of this utility model is achieved in that a kind of the two poles of the earth impeller diameter is unequal to the axial flow rotary blower fan apparatus, it comprises fan shroud (3), a left side, right motor (5), left and right sides electric machine support (7), fixing bolt (8), it is characterized in that a described left side, passing through respectively that right motor (5) is corresponding mutually is left, right electric machine support (7) is fixedly mounted on the interior base of fan shroud (3) with fixed bolt (8), an and left side, the axial fan hub (6) of one and two utmost points is installed respectively on right motor (5) impeller shaft (4) separately, and it takes turns one-level draught fan impeller (1) and the two polar wind machine impellers (2) that differ in the footpath to go up each self-assembly at the axial fan hub (6) of one and two utmost points.When one, the two polar wind machine impellers that differ when wheel footpath are assemblied on separately the axial fan hub, it is identical to axial flow rotary blower fan rotating speed owing to left and right motor (5) when working, and the diameter of impeller (1), (2) is inequality, therefore the air-flow situation between the two-wheeled is improved, the static pressure efficiency of device proper is improved.
Owing to adopted such scheme, particularly than the identical axial-flow blower device of the two poles of the earth impeller diameter, the good effect of this device is fairly obvious; Nothing zero is done big improvement on the whole to installing, and only needs that the diameter of the two poles of the earth impeller is done corresponding ratio adjustment and can realize reducing flowed energy loss, improves the purpose of device static pressure efficiency.
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is overall structure figure of the present utility model.
Fig. 2 is the sectional schematic diagram of an one-level axial fan hub and a utmost point impeller.
Fig. 3 is the sectional schematic diagram of two polar wind wheel hubs and sencond stage impeller.
Among the figure-the one-level draught fan impeller; 2-two polar wind machine impellers; The 3-fan shroud;
4, impeller shaft; The 5-motor; The 6-axial fan hub; The 7-electric machine support; The 8-fixing bolt; C2-is the axial flow direction of air-flow.
It comprises fan shroud 3, left and right motor 5, left and right sides electric machine support 7 by Fig. 1,2,3 the utility model, fixing bolt 8, it is characterized in that corresponding mutually being fixedly mounted on the base in the fan shroud 3 with fixed bolt 8 by left and right electric machine support 7 respectively of described left and right motor 5, and the axial fan hub 6 of one and two utmost points is installed respectively on left and right motor 5 impeller shaft 4 separately, on the axial fan hub 6 of one and two utmost points each self-assembly its take turns footpath the one-level draught fan impeller 1 and the two polar wind machine impellers 2 that differ.One and two above-mentioned polar wind wheel hubs 6, its diameter ratio is: D1 D2=(1.01～1.35)).Above-mentioned one-level draught fan impeller 1 two polar wind machine impellers 2, its diameter ratio is: d2=(0.85～1.35) d1.
This programme to the axial flow rotary blower fan in, sencond stage impeller diameter (being the outlet side impeller) greater than one-level impeller diameter (being the inlet end impeller) to revolving the axis of no-feathering flow fan.This scheme has been improved the flow condition of air-flow between both stage impellers, has reduced the energy loss of air-flow.Its device static pressure efficiency improves 2-8% than the counter-rotating fan of both stage impellers equal diameters.
Claims (3)
1, a kind of the two poles of the earth impeller diameter is unequal to the axial flow rotary blower fan apparatus, it comprises fan shroud (3), a left side, right motor (5), left and right sides electric machine support (7), fixing bolt (8), it is characterized in that a described left side, passing through respectively that right motor (5) is corresponding mutually is left, right electric machine support (7) is fixedly mounted on the interior base of fan shroud (3) with fixed bolt (8), an and left side, the axial fan hub (6) of one and two utmost points is installed respectively on right motor (5) impeller shaft (4) separately, and it takes turns one-level draught fan impeller (1) and the two polar wind machine impellers (2) that differ in the footpath to go up each self-assembly at the axial fan hub (6) of one and two utmost points.
2, the two poles of the earth according to claim 1 impeller is unequal to the axial flow rotary blower fan apparatus, it is characterized in that one and two above-mentioned polar wind wheel hubs (6), and its diameter ratio is: D2=(1.01～1.35) D1.
3, the unequal device to the axial flow rotary blower fan of both stage impellers according to claim 1 is characterized in that above-mentioned one-level draught fan impeller (1) two polar wind machine impeller (2), and its diameter ratio is: d2=(0.85～1.35) d1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96209138 CN2243560Y (en) | 1996-04-30 | 1996-04-30 | Opposite axial blower equipped with two stage impellers with different diameters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96209138 CN2243560Y (en) | 1996-04-30 | 1996-04-30 | Opposite axial blower equipped with two stage impellers with different diameters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2243560Y true CN2243560Y (en) | 1996-12-25 |
Family
ID=33892872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96209138 Expired - Lifetime CN2243560Y (en) | 1996-04-30 | 1996-04-30 | Opposite axial blower equipped with two stage impellers with different diameters |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2243560Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828977A (en) * | 2012-09-18 | 2012-12-19 | 四川高通环保科技股份有限公司 | Energy-saving fan |
| CN113480006A (en) * | 2021-07-21 | 2021-10-08 | 河南景尚环保科技有限公司 | Sewage treatment bilobed wheel backwash pump based on CRI system |
-
1996
- 1996-04-30 CN CN 96209138 patent/CN2243560Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828977A (en) * | 2012-09-18 | 2012-12-19 | 四川高通环保科技股份有限公司 | Energy-saving fan |
| CN102828977B (en) * | 2012-09-18 | 2014-12-10 | 四川高通环保科技股份有限公司 | Energy-saving fan |
| CN113480006A (en) * | 2021-07-21 | 2021-10-08 | 河南景尚环保科技有限公司 | Sewage treatment bilobed wheel backwash pump based on CRI system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |