CN202673711U - Noise reduction fan with double fan blades - Google Patents
Noise reduction fan with double fan blades Download PDFInfo
- Publication number
- CN202673711U CN202673711U CN 201220248268 CN201220248268U CN202673711U CN 202673711 U CN202673711 U CN 202673711U CN 201220248268 CN201220248268 CN 201220248268 CN 201220248268 U CN201220248268 U CN 201220248268U CN 202673711 U CN202673711 U CN 202673711U
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- fan
- rotating shaft
- flabellum
- fan blade
- opposite
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Abstract
The utility model discloses a noise reduction fan with double fan blades, which comprises a driving motor and a first fan blade mounted on a rotating shaft of the driving motor, wherein a second fan blade of which the size is equal to that of the first fan blade is arranged on the rotating shaft and is fixed on a shaft sleeve; the rotating shaft is sleeved with the shaft sleeve, and is not contacted with the shaft sleeve; and the rotating speed of the shaft sleeve and the rotating shaft are the same while the rotating directions of the shaft sleeve and the rotating shaft are opposite, and the mounting direction of the second fan blade is opposite to that of the first fan blade. As the two fan blades rotate in opposite directions, noise generated by the two fan blades during operation can be mutually interfered and mutually offset, as a result, the noise reduction fan with the double fan blades achieves the effect of noise reduction; and meanwhile, due to the relation of opposite mounting of the first fan blade and the second fan blade, the first fan blade and the second fan blade do work and blow wind towards the same direction when rotating in opposite directions, thereby increasing the wind pressure and wind volume at an output end and enhancing suction capability at an input end of the fan.
Description
Technical field
The utility model relates to the sound deadening fan of a kind of fan, particularly a kind of Dual-blade.
Background technique
At present, fan is the household electric appliance that frequently touch in people's daily life, and fan can directly apply to and be that people blowing, fan can also be applied on the sink of computer or on the extraction fan of range hood.But more existing fans are because power is larger, and such as the extraction fan on the range hood, noise is larger during work, affects people's life.
Summary of the invention
In order to solve the problems of the technologies described above, the purpose of this utility model is to provide a kind of fan of high-power low-noise.
The technological scheme that the utility model adopts mainly is:
A kind of sound deadening fan of Dual-blade, comprise drive motor, be installed in the first flabellum in the rotating shaft of drive motor, be provided with in the described rotating shaft and equal-sized the second flabellum of the first flabellum, described the second flabellum is fixed on the axle sleeve, described axle sleeve is socketed in outside the rotating shaft and with rotating shaft and does not contact, described axle sleeve is opposite with the rotating speed equidirectional of rotating shaft, and the installation direction of described the second flabellum is opposite with the first flabellum.
As further improvement in the technical proposal, described axle sleeve preferably drives by the second drive motor; The driving mode of axle sleeve is not limited to adopt motor driving, and described axle sleeve can also be driven by rotating shaft by the gear transmission group; Perhaps by drive wheel and transmission leather strap connection rotating shaft, driven by rotating shaft.
As further improvement in the technical proposal, described the first flabellum and the second flabellum can be axial flow or centrifugal, and the setting angle of described the first flabellum and the second flabellum is fully opposite.
The beneficial effects of the utility model are: the sound deadening fan of this Dual-blade is owing to two flabellum backward rotation, and the noise that produces during two flabellums work interferes with each other, and cancels each other, and plays the effect of noise reduction; Because the first flabellum and the antipodal relation of the second flabellum setting angle during both backward rotation, are to same direction acting blowing, can increase blast and the air quantity of output terminal, and promote suction at the fan input end simultaneously.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Embodiment
With reference to Fig. 1, the sound deadening fan of a kind of Dual-blade that the utility model provides comprises drive motor 5, and the first flabellum 2 is installed in the rotating shaft 1 of drive motor 5, and described the first flabellum 2 is by drive motor 5 driven rotary; Be provided with in the rotating shaft 1 and the first flabellum 2 equal-sized the second flabellums 3, the first flabellum 2 and the second flabellum 3 can be axial flow or centrifugal, the setting angle of the first flabellum 2 and the second flabellum 3 is fully opposite, the second flabellum 3 is fixed on the axle sleeve 4, and described axle sleeve 4 is socketed in outside the rotating shaft 1 and with rotating shaft 1 and does not contact, and is preferred, axle sleeve 4 connects the second drive motor, and by the motor driving rotation, the rotating speed of axle sleeve 4 is identical with the rotating speed of rotating shaft 1, the direction of rotation of axle sleeve 4 sense of rotation and rotating shaft 1.In addition, axle sleeve 4 can also pass through driving mechanism connection rotating shaft 1, and drives rotation by rotating shaft 1, and described driving mechanism can be the gear transmission group, and driving mechanism can also be comprised of drive wheel and transmission leather strap.
The sound deadening fan of this Dual-blade is owing to two flabellums 2,3 backward rotation, and the noise that produces during two flabellums work interferes with each other, and cancels each other, and plays the effect of noise reduction; Because the relation of the first flabellum 2 and the second flabellum 3 anti-dresses during both backward rotation, is to same direction acting blowing, can increases blast and the air quantity of output terminal, and promote suction at the fan input end simultaneously.
The above only is preferential mode of execution of the present utility model, as long as realize that with basic identical means the technological scheme of the utility model purpose all belongs within the protection domain of the present utility model.
Claims (5)
1. the sound deadening fan of a Dual-blade, comprise drive motor (5), be installed in the first flabellum (2) in the rotating shaft (1) of drive motor (5), it is characterized in that: be provided with in the described rotating shaft (1) and equal-sized the second flabellum of the first flabellum (2) (3), described the second flabellum (3) is fixed on the axle sleeve (4), described axle sleeve (4) is socketed in outside the rotating shaft (1) and with rotating shaft (1) and does not contact, described axle sleeve (4) is opposite with the rotating speed equidirectional of rotating shaft (1), and the installation direction of described the second flabellum (3) is opposite with the first flabellum (2).
2. the sound deadening fan of a kind of Dual-blade according to claim 1 is characterized in that: described axle sleeve (4) drives by the second drive motor.
3. the sound deadening fan of a kind of Dual-blade according to claim 1, it is characterized in that: described axle sleeve (4) is driven by rotating shaft (1) by the gear transmission group.
4. the sound deadening fan of a kind of Dual-blade according to claim 1 is characterized in that: described axle sleeve (4) drives by drive wheel and transmission leather strap connection rotating shaft (1) and by rotating shaft (1).
5. the sound deadening fan of a kind of Dual-blade according to claim 1, it is characterized in that: described the first flabellum (2) and the second flabellum (3) can be axial flow or centrifugal, and the setting angle of described the first flabellum (2) and the second flabellum (3) is fully opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220248268 CN202673711U (en) | 2012-05-29 | 2012-05-29 | Noise reduction fan with double fan blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220248268 CN202673711U (en) | 2012-05-29 | 2012-05-29 | Noise reduction fan with double fan blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202673711U true CN202673711U (en) | 2013-01-16 |
Family
ID=47494618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220248268 Expired - Fee Related CN202673711U (en) | 2012-05-29 | 2012-05-29 | Noise reduction fan with double fan blades |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202673711U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705269A (en) * | 2012-05-29 | 2012-10-03 | 张秀英 | Silencing fan with two fan blades |
| CN104929960A (en) * | 2015-05-18 | 2015-09-23 | 德州贝诺风力机械设备有限公司 | Single-driving double-oar counter-rotating fan |
| CN105545777A (en) * | 2016-01-25 | 2016-05-04 | 珠海格力电器股份有限公司 | Fan system, air conditioner external unit and heat exchange method of air conditioner external unit |
| WO2017152694A1 (en) * | 2016-03-06 | 2017-09-14 | 淄博环能海臣环保技术服务有限公司 | Air-purification electric fan with dual-layer blades |
-
2012
- 2012-05-29 CN CN 201220248268 patent/CN202673711U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705269A (en) * | 2012-05-29 | 2012-10-03 | 张秀英 | Silencing fan with two fan blades |
| CN104929960A (en) * | 2015-05-18 | 2015-09-23 | 德州贝诺风力机械设备有限公司 | Single-driving double-oar counter-rotating fan |
| CN105545777A (en) * | 2016-01-25 | 2016-05-04 | 珠海格力电器股份有限公司 | Fan system, air conditioner external unit and heat exchange method of air conditioner external unit |
| WO2017152694A1 (en) * | 2016-03-06 | 2017-09-14 | 淄博环能海臣环保技术服务有限公司 | Air-purification electric fan with dual-layer blades |
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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: 20130116 Termination date: 20140529 |