CN213331605U - Blade for low-noise axial-flow fan - Google Patents
Blade for low-noise axial-flow fan Download PDFInfo
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- CN213331605U CN213331605U CN202021868011.9U CN202021868011U CN213331605U CN 213331605 U CN213331605 U CN 213331605U CN 202021868011 U CN202021868011 U CN 202021868011U CN 213331605 U CN213331605 U CN 213331605U
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- flow
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- 238000005265 energy consumption Methods 0.000 abstract description 11
- 241000883990 Flabellum Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model discloses a blade for low noise axial fan, including fan axis, blade pivot and fan pivot, the lower extreme of blade passes through the blade pivot and rotates to be connected in the fan is epaxial, the fan pivot connect in the centraxonial axle center of fan. The utility model discloses a blade for low noise axial fan can be through changing the flow and the velocity of flow that the blade direction controlled the air current to reduce the energy consumption, the noise reduction, current axial fan noise source is mainly the low frequency noise that motor or blade cutting air produced, through the form that changes the fan blade, contact surface with the air when changing the cutting air, can effectively improve the noise size, become the blade in the contained angle of rotation direction and can reduce the noise, and reduce flow and velocity of flow, through the energy consumption that can reduce the motor.
Description
Technical Field
The utility model relates to a technical field such as mechanical equipment, flabellum and axial fan, concretely relates to a blade for low noise axial fan.
Background
The axial flow fan has a very wide application, namely, the axial flow fan and the fan blade have the same direction of air flow, such as an electric fan, and an air conditioner outer machine fan is an axial flow type running fan. The "axial flow" is so called because the gas flows parallel to the fan axis. Axial flow fans are typically used in applications where flow requirements are high and pressure requirements are low. The axial fan fixes the position and moves the air. The axial flow fan mainly comprises a fan impeller and a casing, and is simple in structure but high in data requirement. The common axial flow fan can be used for ventilation in places such as general factories, warehouses, offices, houses and the like, can also be used for air coolers (air coolers), evaporators, condensers, spray coolers and the like, also has a mine axial flow fan, adopts anticorrosive materials and explosion-proof measures for anticorrosive and explosion-proof axial flow fans, is matched with an explosion-proof motor, and can be used for conveying explosive, volatile and corrosive gas.
The blade of the axial flow fan is particularly important as a main body part, and the blade of the axial flow fan cuts air and enables the air to move axially towards the blade so as to generate air flow, so that the shape and the size of the blade determine the flow and the flow speed of the air flow, influence on the power consumption of a motor and the like, and how to improve the flow and simultaneously reduce the energy consumption and the noise.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model provides a blade for low noise axial fan to the flow and the velocity of flow of control air current, and reduce energy consumption, noise reduction.
The blade for the low-noise axial flow fan comprises a fan middle shaft, blades, a blade rotating shaft and a fan rotating shaft, wherein the lower ends of the blades are rotatably connected to the fan middle shaft through the blade rotating shaft, and the fan rotating shaft is connected to the axis center of the fan middle shaft.
The utility model discloses a blade for low noise axial fan can be through changing the flow and the velocity of flow that the blade direction controlled the air current to reduce the energy consumption, the noise reduction, current axial fan noise source is mainly the low frequency noise that motor or blade cutting air produced, through the form that changes the fan blade, contact surface with the air when changing the cutting air, can effectively improve the noise size, become the blade in the contained angle of rotation direction and can reduce the noise, and reduce flow and velocity of flow, through the energy consumption that can reduce the motor.
Further, in order to improve the structural strength and the stability of the blade during rotation, the blade for the low-noise axial flow fan further comprises an inertia ring, and the inertia ring is connected with the upper end of the blade. The connection mode mainly adopts rotary connection, and the upper end of each blade is provided with a rotary shaft.
Furthermore, in order to conveniently control the shapes of the blades and realize simultaneous control, a conical gear set is arranged in the fan middle shaft and comprises a longitudinal conical gear and an axial conical gear, the longitudinal conical gear is meshed with the axial conical gear, the blade rotating shaft is connected with the axis of the longitudinal conical gear, and the fan middle shaft is connected with the axis of the axial conical gear.
Further, the axial direction of the longitudinal bevel gear is perpendicular to the axial direction of the axial bevel gear.
Further, the number of the blades is 2N, and N is a natural number.
Further, the blade for the low-noise axial flow fan further comprises a shell, and the blade is arranged on the inner side of the shell.
Furthermore, the blade for the low-noise axial flow fan further comprises a motor and a support frame, wherein the motor is arranged on the inner side of the shell and is connected with a fan middle shaft through a fan rotating shaft.
Further, a mounting frame is arranged on the outer side of the shell.
The beneficial effects of the utility model are embodied in:
the utility model is used for the blade of the low-noise axial flow fan, controls the flow and the flow velocity of the air flow, reduces the energy consumption and the noise; the flow and the flow velocity of the air flow are controlled by changing the direction of the blades, the energy consumption and the noise are reduced, the noise source of the existing axial flow fan is mainly low-frequency noise generated by cutting air by the motor or the blades, the contact surface between the air and the blades when the air is cut is changed by changing the shapes of the fan blades, the noise can be effectively improved, the included angle of the blades in the rotating direction is reduced, the noise can be reduced, the flow and the flow velocity are reduced, and the energy consumption of the motor can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic sectional view of the present invention;
fig. 2 is a schematic front view of the structure of the present invention;
fig. 3 is a schematic structural view of a bevel gear set.
In the drawing, 1-shell, 2-motor, 3-fan middle shaft, 31-axial bevel gear, 4-blade, 5-blade rotating shaft, 51-longitudinal bevel gear, 6-fan rotating shaft, 7-supporting frame, 8-mounting frame and 9-inertia ring.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
Examples
As shown in fig. 1-3:
the blade for the low-noise axial flow fan comprises a fan middle shaft 3, blades 4, a blade rotating shaft 5 and a fan rotating shaft 6, wherein the lower ends of the blades 4 are rotatably connected to the fan middle shaft 3 through the blade rotating shaft 5, and the fan rotating shaft 6 is connected to the axis of the fan middle shaft 3.
The utility model discloses a blade for low noise axial fan can be through changing 4 directions of blade flow and the velocity of flow that come control air current, and reduce the energy consumption, the noise reduction, current axial fan noise source is mainly the low frequency noise that motor or blade cutting air produced, through the form that changes fan blade 4, contact surface with the air when changing the cutting air, can effectively improve the noise size, become blade 4 in the contained angle of rotation direction and reduce and can the noise reduction, and reduce flow and velocity of flow, through the energy consumption that can reduce the motor.
In the present embodiment, in order to improve the structural strength and the stability of the blade 4 during rotation, the blade for a low noise axial flow fan further includes an inertia ring 9, and the inertia ring 9 is connected to the upper end of the blade 4. The connection mode mainly adopts a rotary connection, and the upper end of the blade 4 is provided with a rotary shaft. The inertia ring 9 continuously rotates the blades 4 mainly by inertia.
In this embodiment, in order to conveniently control the shapes of the blades 4 and achieve simultaneous control, a bevel gear set is disposed in the fan central shaft 3, the bevel gear set includes a longitudinal bevel gear 51 and an axial bevel gear 31, the longitudinal bevel gear 51 is engaged with the axial bevel gear 31, the blade rotating shaft 5 is connected with the axis of the longitudinal bevel gear 51, and the fan central shaft 3 is connected with the axis of the axial bevel gear 31.
In the present embodiment, the axial direction of the longitudinal bevel gear 51 is perpendicular to the axial direction of the axial bevel gear 31.
In the present embodiment, the number of the blades 4 is 2N, where N is a natural number.
In the embodiment, the blade for the low-noise axial flow fan further comprises a shell 1, and the blade 4 is arranged on the inner side of the shell 1.
In this embodiment, the blade for a low-noise axial flow fan further includes a motor 2 and a support frame 7, the motor 2 is disposed inside the housing 1, and the motor 2 is connected with the fan middle shaft 3 through the fan rotating shaft 6.
In this embodiment, a mounting frame 8 is provided outside the housing 1.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (8)
1. A blade for a low-noise axial-flow fan, characterized in that: the novel fan is characterized by comprising a fan middle shaft (3), blades (4), a blade rotating shaft (5) and a fan rotating shaft (6), wherein the lower ends of the blades (4) are rotatably connected to the fan middle shaft (3) through the blade rotating shaft (5), and the fan rotating shaft (6) is connected to the axis of the fan middle shaft (3).
2. The blade for a low-noise axial-flow fan according to claim 1, wherein: the blade is characterized by further comprising an inertia ring (9), wherein the inertia ring (9) is connected with the upper end of the blade (4).
3. The blade for a low-noise axial-flow fan according to claim 1, wherein: the fan is characterized in that a conical gear set is arranged in the fan middle shaft (3), the conical gear set comprises a longitudinal conical gear (51) and an axial conical gear (31), the longitudinal conical gear (51) is meshed with the axial conical gear (31), the blade rotating shaft (5) is connected with the axis of the longitudinal conical gear (51), and the fan middle shaft (3) is connected with the axis of the axial conical gear (31).
4. The blade for a low-noise axial-flow fan according to claim 3, characterized in that: the axial direction of the longitudinal bevel gear (51) is vertical to the axial direction of the axial bevel gear (31).
5. The blade for a low-noise axial-flow fan according to claim 1, wherein: the number of the blades (4) is 2N, and N is a natural number.
6. The blade for a low-noise axial-flow fan according to claim 1, wherein: the blade-type wind power generator further comprises a shell (1), and the blades (4) are arranged on the inner side of the shell (1).
7. The blade for a low-noise axial-flow fan according to claim 6, wherein: the fan is characterized by further comprising a motor (2) and a supporting frame (7), wherein the motor (2) is arranged on the inner side of the shell (1), and the motor (2) is connected with the fan middle shaft (3) through a fan rotating shaft (6).
8. The blade for a low-noise axial-flow fan according to claim 6, wherein: and a mounting rack (8) is arranged on the outer side of the shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021868011.9U CN213331605U (en) | 2020-08-28 | 2020-08-28 | Blade for low-noise axial-flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021868011.9U CN213331605U (en) | 2020-08-28 | 2020-08-28 | Blade for low-noise axial-flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213331605U true CN213331605U (en) | 2021-06-01 |
Family
ID=76101314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021868011.9U Expired - Fee Related CN213331605U (en) | 2020-08-28 | 2020-08-28 | Blade for low-noise axial-flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213331605U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116877174A (en) * | 2023-09-06 | 2023-10-13 | 中铁一局集团电务工程有限公司 | Tunnel ventilation device |
-
2020
- 2020-08-28 CN CN202021868011.9U patent/CN213331605U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116877174A (en) * | 2023-09-06 | 2023-10-13 | 中铁一局集团电务工程有限公司 | Tunnel ventilation device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210601 |