CN201943982U - Double-layered contrarotating axial-flow fan - Google Patents
Double-layered contrarotating axial-flow fan Download PDFInfo
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- CN201943982U CN201943982U CN2011200183625U CN201120018362U CN201943982U CN 201943982 U CN201943982 U CN 201943982U CN 2011200183625 U CN2011200183625 U CN 2011200183625U CN 201120018362 U CN201120018362 U CN 201120018362U CN 201943982 U CN201943982 U CN 201943982U
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- 238000009434 installation Methods 0.000 claims abstract description 6
- 239000012530 fluid Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 2
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Abstract
The utility model discloses a double-layered contrarotating axial-flow fan. A motor holder is fixed on a casing; a first motor and a second motor are fixed on the motor holder; a first axial-flow fan is fixed on the rotating shaft of the first motor; the first axial-flow fan comprises a first hub and a first blade; the first blade is fixed on the first hub; a second axial-flow fan is fixed on the rotating shaft of the second motor; the second axial-flow fan comprises a second hub and a second blade; the second blade is fixed on the second hub; the rotating speed of the first axial-flow fan and the rotating speed of the second axial-flow fan are the same, and the rotating directions of the first axial-flow fan and the second axial-flow fan are opposite; and the installation directions of the first blade and the second blade are opposite. Because two rotors with the same blade shape and opposite rotating directions act mutually, the original speed which deviates from an axial direction is corrected and the pressure energy of fluid is increased. The fan adopts a double-layered design, the air volume and the air pressure are improved through a back installation method, so that the purpose of improving the radiating efficiency is achieved.
Description
Technical field
The utility model relates to radiation fan, relates in particular to a kind of double-deck contrarotating axial fan.
Background technique
At present, electronic parts and components such as computer, electronic instrument adopt the small-size shaft flow fan as heat-dissipating part usually.Along with the continuous increase of electrical equipment power, increasing to the low noise radiation fan demand of high ventilation.Present known radiation fan all is a single rotor, obtains more ventilations to improve the method for fan performance by gathering way, and has the problem that efficient reduces and noise increases.Double-deck counter-rotating fan can be realized high pressure ratio, high efficiency and help ventilating in less space.
Summary of the invention
The purpose of this utility model is low in order to overcome conventional fan efficient, and the shortcoming that heat dissipating capacity is little provides a kind of double-deck contrarotating axial fan.This fan is the efficient height not only, and heat dissipating capacity is big, can also realize high pressure ratio, high efficiency in less space, helps ventilating.
Double-deck contrarotating axial fan comprises a plurality of first blades, first axial fan, motor fixing frame, first motor 4, second motor, casing, a plurality of second blade, second axial fan, first wheel and second wheel hub; On casing, be fixed with motor fixing frame, fix first motor on the motor fixing frame, second motor, on the rotatingshaft of first motor, be fixed with first axial fan, first axial fan comprises the first wheel and first blade, be fixed with first blade at first wheel, on the rotatingshaft of second motor, be fixed with second axial fan, second axial fan comprises second wheel hub and second blade, be fixed with second blade at second wheel hub, described first axial fan is identical with the rotating speed of second axial fan, direction of rotation, first blade is opposite with the second blade installation direction.
The utility model adopts two blade profiles identical, and two rotors that sense of rotation is opposite interact, with original off-axis to speed correct and increase the pressure energy of fluid.Fan adopts double-deck fan design, and the mode of utilizing the back to install promotes air quantity and blast, reaches the purpose that promotes radiating efficiency.
Description of drawings
Fig. 1 is double-deck contrarotating axial fan scheme of installation
Fig. 2 is single rotor and double rotor axial fan P-Q performance curve contrast schematic representation
Fig. 3 is single rotor and double rotor axial fan efficiency curve contrast schematic representation
Fig. 4 is the P-Q performance curve schematic representation at double-deck contrarotating axial fan different chord lengths place
Among the figure, first blade 1, first axial fan 2, motor fixing frame 3, first motor 4, second motor 5, casing 6, second blade 7, second axial fan 8, first wheel 9, second wheel hub 10.
Embodiment
As shown in Figure 1, double-deck contrarotating axial fan comprises a plurality of first blades 1, first axial fan 2, motor fixing frame 3, first motor 4, second motor 5, casing 6, a plurality of second blade 7, second axial fan 8, first wheel 9 and second wheel hub 10; On casing 6, be fixed with motor fixing frame 3, fix first motor 4 on the motor fixing frame 3, second motor 5, on the rotatingshaft of first motor 4, be fixed with first axial fan 2, first axial fan 2 comprises the first wheel 9 and first blade 1, be fixed with first blade 1 at first wheel 9, on the rotatingshaft of second motor 5, be fixed with second axial fan 8, second axial fan 8 comprises second wheel hub 10 and second blade 7, be fixed with second blade 7 at second wheel hub 10, described first axial fan 2 is identical with the rotating speed of second axial fan 8, direction of rotation, first blade 1 is opposite with second blade, 7 installation directions.
Principle of the present utility model is: at the calculated flow rate scope (0.00535kg/s of institute, 0.0165kg/s) in, fluid is through behind the preceding rotor, because the effect of rotation, speed with axially an angle is arranged, enter next rotor again, double-deck counter-rotating fan (FR) can with original off-axis to speed correct and increase the pressure energy of fluid, bilayer rotary fan (RR) in the same way then makes the speed deviations angle strengthen, thereby the energy that fluid is obtained reduces.The voltage rise value that double-deck counter-rotating fan obtains is all than single rotor and double-deck homodromal fan height, and efficient is also than the homodromal fan height of bilayer.To the p-Q performance curve under situation that distance (d) is different between two rotors of the p-Q performance curve of single rotor and double-deck fan as shown in Figure 2, η-the Q efficiency curve as shown in Figure 3.
Two rotor spacings of double-deck counter-rotating fan have the voltage rise peak value to occur greater than the model of 1 times of chord length; At the intermediate flow weight range, the rotor spacing is the fan p-Q of 2 times of chord lengths; Voltage rise is different with the rotor spacing and present erratic variation along with flow, thus can obtain that higher pressure rises and the prerequisite of flow under select between rotor the distance little fan of trying one's best.The p-Q performance curve of double-deck counter-rotating fan different spacing model as shown in Figure 4.
Claims (1)
1. a double-deck contrarotating axial fan is characterized in that comprising a plurality of first blades (1), first axial fan (2), motor fixing frame (3), first motor (4), second motor (5), casing (6), a plurality of second blade (7), second axial fan (8), first wheel (9) and second wheel hub (10); On casing (6), be fixed with motor fixing frame (3), fix first motor (4) on the motor fixing frame (3), second motor (5), on the rotatingshaft of first motor (4), be fixed with first axial fan (2), first axial fan (2) comprises first wheel (9) and first blade (1), be fixed with first blade (1) at first wheel (9), on the rotatingshaft of second motor (5), be fixed with second axial fan (8), second axial fan (8) comprises second wheel hub (10) and second blade (7), be fixed with second blade (7) at second wheel hub (10), described first axial fan (2) is identical with the rotating speed of second axial fan (8), direction of rotation, first blade (1) is opposite with second blade (7) installation direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200183625U CN201943982U (en) | 2011-01-20 | 2011-01-20 | Double-layered contrarotating axial-flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200183625U CN201943982U (en) | 2011-01-20 | 2011-01-20 | Double-layered contrarotating axial-flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201943982U true CN201943982U (en) | 2011-08-24 |
Family
ID=44471326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200183625U Expired - Fee Related CN201943982U (en) | 2011-01-20 | 2011-01-20 | Double-layered contrarotating axial-flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201943982U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052339A (en) * | 2011-01-20 | 2011-05-11 | 浙江理工大学 | Double-layer reverse axial fan |
| CN106144596A (en) * | 2015-05-11 | 2016-11-23 | 盟立自动化股份有限公司 | Transport carrier for transporting plate members |
| CN106743641A (en) * | 2015-11-23 | 2017-05-31 | 盟立自动化股份有限公司 | Transport carrier for transporting plate members |
-
2011
- 2011-01-20 CN CN2011200183625U patent/CN201943982U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052339A (en) * | 2011-01-20 | 2011-05-11 | 浙江理工大学 | Double-layer reverse axial fan |
| CN106144596A (en) * | 2015-05-11 | 2016-11-23 | 盟立自动化股份有限公司 | Transport carrier for transporting plate members |
| CN106743641A (en) * | 2015-11-23 | 2017-05-31 | 盟立自动化股份有限公司 | Transport carrier for transporting plate members |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20140120 |