CN213540838U - Axial flow fan impeller with balance groove - Google Patents
Axial flow fan impeller with balance groove Download PDFInfo
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- CN213540838U CN213540838U CN202022208111.5U CN202022208111U CN213540838U CN 213540838 U CN213540838 U CN 213540838U CN 202022208111 U CN202022208111 U CN 202022208111U CN 213540838 U CN213540838 U CN 213540838U
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- blade
- balance
- axial flow
- flow fan
- impeller
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Abstract
The utility model relates to an axial flow fan impeller with a balance groove, which is provided with an impeller hub and a plurality of blades distributed outside the impeller hub, wherein one end of each blade is a root part, and the other end of each blade is a tip part; the root of the blade is fixedly connected with the impeller hub; the suction surface of the tip of the blade is provided with at least one balance groove for filling balance mud. The utility model effectively solves the problem of insufficient rigidity of the injection molding blade tip part; and provides space for blade balancing; effectively reduce the pressure surface of the tip portion and the air current reflux of the suction surface, solve the use problem of the motor under the conditions of heat dissipation and high humidity, and have good applicability.
Description
Technical Field
The utility model relates to a take axial fan impeller of compensating groove.
Background
The axial flow fan mainly comprises a fan impeller and an outer rotor motor, the outer rotor of the outer rotor motor drives the fan impeller to rotate when the axial flow fan operates, so that gas flows parallel to a fan shaft, and the axial flow fan is very wide in application due to the simple structure.
Axial flow fan blades operate in a manner similar to an aircraft wing. However, the latter act to lift the wing upwards and support the weight of the aircraft, while the axial fan is fixed in position and moves the air.
In order to ensure the stable operation of the axial flow fan, the fan impeller is often required to be balanced. The traditional balance adjusting mode is that a balance clamp is arranged on a blade of a fan impeller, and the balance degree is adjusted through the balance clamp. But the balance clamp has certain potential safety hazard and has a single adjusting mode.
When the axial flow fan works, the outer rotor motor can generate heat, and the heat dissipation problem of the outer rotor motor is always required to be considered in order to ensure the working stability. Meanwhile, the problems of production efficiency and production cost are considered in some existing axial flow fans, and fan impellers of the axial flow fans are usually made of integrated injection molding parts. However, the blades of the fan wheel of the injection-molded part often need to be considered in terms of rigidity and deformation.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an axial flow fan impeller with a balance groove, which effectively solves the problem of insufficient rigidity of the injection molding blade tip; and provides space for blade balancing; effectively reduce the pressure surface of the tip portion and the air current reflux of the suction surface, solve the use problem of the motor under the conditions of heat dissipation and high humidity, and have good applicability.
Realize the utility model discloses the technical scheme of purpose is: the utility model is provided with an impeller hub and a plurality of blades distributed outside the impeller hub, wherein one end of each blade is a root part, and the other end of each blade is a tip part; the root of the blade is fixedly connected with the impeller hub; the suction surface of the tip of the blade is provided with at least one balance groove for filling balance mud.
Preferably, a plurality of balance grooves for filling balance mud are arranged on the suction surface of the tip of the blade. So as to provide more choices for the adjustment of the degree of balance, namely, a certain balance groove or a plurality of balance grooves can be selected to be filled with the balance mud according to the balance adjustment requirement.
As a further optimization, the tip part of the blade is provided with two wing knives which are arranged in parallel and extend along the extending direction of the tip part of the blade; at least two first reinforcing ribs are arranged between the two wing knives, and concave holes are formed between the adjacent first reinforcing ribs and the two wing knives; the shrinkage pool is the compensating tank that is used for filling balanced mud.
As further optimization, a plurality of first reinforcing ribs are arranged between the two winged knives and divide the two winged knives into a plurality of balance grooves.
A plurality of ventilation through holes are distributed on the impeller hub along the circumference of the axis of the impeller hub; the ventilation through hole extends along the axial direction of the impeller hub.
As an optimized design, the inner side of the impeller hub is provided with a ring body which is inwardly reduced; the ventilation through hole is formed in the ring body.
And a metal plate flange used for being pressed with a rotor of the outer rotor motor is fixedly arranged on the inner side of the ring body.
A plurality of second reinforcing ribs are arranged between the ring body and the inner side surface of the impeller hub; impeller wheel hub, blade, ring body and second strengthening rib are injection molding as an organic whole, and the ring body links into an organic whole through the package plastic with the panel beating flange.
The blade is formed by connecting a plurality of airfoil sections with different relative curvatures in a smooth mode. The relative camber of the root of the blade is greater than the relative camber of the tip of the blade.
The utility model discloses has positive effect: (1) the utility model arranges the balance groove at the tip of the blade, and the balance clamp can be removed by filling balance mud in the balance groove, thereby avoiding the safety risk caused by the falling of the balance clamp; and simultaneously, the space can be saved.
(2) The utility model discloses a plurality of compensating tanks can provide more selections for the adjustment of equilibrium degree, can select wherein certain compensating tank or a plurality of compensating tank to fill balanced mud in order to adjust balanced needs.
(3) The utility model can effectively reduce the air current backflow between the pressure surface and the suction surface of the blade tip part through the two winged knives, and can also solve the problem of insufficient rigidity of the injection molding blade tip part; utilize the interval between two wing swoves simultaneously, combine first strengthening rib to realize the formation of compensating groove, design benefit, the effect is various.
(4) The utility model can lead a small amount of airflow to flow back through the ventilation through holes, thereby achieving good effect of heat dissipation of the motor during later installation and use; meanwhile, the effect of timely draining accumulated water can be achieved in the place with high humidity, and good guarantee is provided for normal operation of the fan.
(5) The utility model discloses a second strengthening rib can promote the intensity of ring body, when guaranteeing the pressure equipment requirement, also can promote impeller wheel hub's bulk strength.
(6) The utility model discloses well blade is formed for the smooth connection of the wing section of a plurality of different relative curvatures for injection moulding's blade has good rigidity, warp for a short time.
Drawings
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the middle wing knife and the first reinforcing rib of the present invention;
fig. 3 is a schematic view of the cross section of the blade according to the present invention.
Detailed Description
Referring to fig. 1 to 3, the present invention has an impeller hub 1 and a plurality of blades 2 distributed outside the impeller hub 1, wherein one end of each blade 2 is a root 21, and the other end is a tip 22; the root 21 of the blade 2 is fixedly connected with the impeller hub 1; two parallel winged knives 4 extending along the extending direction of the tip part 22 of the blade 2 are arranged on the suction surface of the tip part 22 of the blade 2; a plurality of first reinforcing ribs 5 are arranged between the two wing knives 4, and concave holes are formed between the adjacent first reinforcing ribs 5 and the two wing knives 4; the concave hole is a balance groove 3 for filling balance mud; the first ribs 5 partition the two blades 4 into a plurality of balance grooves 3. Wherein the fence 4 is an aerofoil, i.e. similar in cross-section to a wing.
Since the tip portion 22 of the blade 2 is provided with the fence 4, the overall thickness is increased, effectively increasing the rigidity of the tip portion 22 of the blade 2.
The inner side of the impeller hub 1 is provided with a ring body 11 which is inwardly reduced in diameter; a plurality of ventilation through holes 6 are distributed on the ring body 11 along the circumference of the axis thereof; the ventilation through-hole 6 extends in the axial direction of the impeller hub 1.
The inner side of the ring body 11 is fixedly provided with a sheet metal flange 7 used for being pressed with a rotor of an outer rotor motor through a plastic coating process.
A plurality of second reinforcing ribs 8 are arranged between the ring body 11 and the inner side surface of the impeller hub 1; the ring body 11, the impeller hub 1 and the second reinforcing ribs 8 are integrated.
The blade 2 is formed by connecting a plurality of airfoil sections with different relative curvatures in a smooth mode. The relative camber of the root 21 of the blade 2 is greater than the relative camber of the tip 22 of the blade 2. Where relative camber is the maximum distance from the chord to the mean camber line divided by the chord length multiplied by 100%.
When in balance adjustment, the single or a plurality of balance grooves 3 can be filled with balance mud according to the needs, and the balance adjustment mode is simple and various.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. An axial flow fan impeller with a balance groove is provided with an impeller hub (1) and a plurality of blades (2) distributed on the outer side of the impeller hub (1), one end of each blade (2) is a root part (21), and the other end of each blade is a tip part (22); the root part (21) of the blade (2) is fixedly connected with the impeller hub (1); the method is characterized in that: the suction surface of the tip part (22) of the blade (2) is provided with at least one balance groove (3) for filling balance mud.
2. The axial flow fan impeller with the balance groove as claimed in claim 1, wherein: and a plurality of balance grooves (3) used for filling balance mud are arranged on the suction surface of the tip part (22) of the blade (2).
3. The axial flow fan impeller with the balance groove as claimed in claim 1, wherein: the tip part (22) of the blade (2) is provided with two parallel winged knives (4) which extend along the extending direction of the tip part (22) of the blade (2); at least two first reinforcing ribs (5) are arranged between the two wing knives (4), and concave holes are formed between the adjacent first reinforcing ribs (5) and the two wing knives (4); the concave hole is a balance groove (3) for filling balance mud.
4. The axial flow fan impeller with the balance groove as claimed in claim 3, wherein: a plurality of first reinforcing ribs (5) are arranged between the two wing knives (4), and the two wing knives (4) are separated into a plurality of balance grooves (3) by the first reinforcing ribs (5).
5. The axial flow fan impeller with the balance groove as claimed in claim 1, 2, 3 or 4, wherein: a plurality of ventilation through holes (6) are distributed on the impeller hub (1) along the circumference of the axis of the impeller hub; the ventilation through hole (6) extends along the axial direction of the impeller hub (1).
6. The axial flow fan impeller with the balance groove of claim 5, wherein: the inner side of the impeller hub (1) is provided with a ring body (11) which is reduced inwards; the ventilation through hole (6) is arranged on the ring body (11).
7. The axial flow fan impeller with the balance groove as claimed in claim 2, wherein: and a sheet metal flange (7) which is used for being pressed with a rotor of the outer rotor motor is fixedly arranged on the inner side of the ring body (11).
8. The axial flow fan impeller with the balance groove as claimed in claim 6, wherein: a plurality of second reinforcing ribs (8) are arranged between the ring body (11) and the inner side surface of the impeller hub (1); the ring body (11), the impeller hub (1) and the second reinforcing ribs (8) are integrated.
9. The axial flow fan impeller with the balance groove as claimed in claim 1, 2, 3 or 4, wherein: the blade (2) is formed by connecting a plurality of airfoil sections with different relative curvatures in a smooth mode.
10. The axial flow fan impeller with the balance groove of claim 9, wherein: the relative curvature of the root (21) of the blade (2) is greater than the relative curvature of the tip (22) of the blade (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022208111.5U CN213540838U (en) | 2020-09-30 | 2020-09-30 | Axial flow fan impeller with balance groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022208111.5U CN213540838U (en) | 2020-09-30 | 2020-09-30 | Axial flow fan impeller with balance groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213540838U true CN213540838U (en) | 2021-06-25 |
Family
ID=76495709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022208111.5U Active CN213540838U (en) | 2020-09-30 | 2020-09-30 | Axial flow fan impeller with balance groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213540838U (en) |
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2020
- 2020-09-30 CN CN202022208111.5U patent/CN213540838U/en active Active
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