Light-weight high-rigidity support of axial flow fan based on topological optimization

Abstract

The utility model relates to the technical field of fans, and discloses an axial flow fan light-weight high-rigidity support based on topological optimization, which comprises a fan shell, a motor and a support assembly, the motor is fixed on the support assembly to form a complete fan main body, the fan main body is detachably mounted on the fan shell, and the fan shell is fixed on the support assembly. The support assembly comprises a flange ring and at least two support rods, the support rods are fixedly connected to the end face of one side of the flange ring, the positions of the support rods are tangent to the flange ring, and the support rods are further arranged in an arch-like mode. The connection surface between the flange ring and the support rod can be increased through tangency of the flange ring and the support rod, namely the contact surface of an installation surface is increased, so that the connection stability between the flange ring and the support rod is improved, and the whole support is more stable and not prone to disengagement.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan technical field, concretely is a kind of lightweight high-rigidity bracket of axial fan based on topology optimization. BACKGROUND

[0002] Fan is a kind of relying on input mechanical energy, improve gas pressure and send gas, belongs to driven fluid machinery. From the point of view of energy conversion, it is the mechanical energy of prime mover into the pressure energy and kinetic energy of the gas being transported equipment.

[0003] Now fan support its general stiffness, to increase its thickness, not only limited effect of strengthening, but also greatly increase its weight, make the whole fan weight is larger, and support thinner will be due to fan's vibration and load and lead to its deformation, thereby influence fan stability, and now support support rod and flange ring installation mode is support rod along the radial direction welding of flange ring, its welding surface size is limited, can appear the phenomenon of separation due to the vibration of fan. SUMMARY

[0004] To solve the above problems existing in the prior art, the utility model provides a kind of lightweight high-rigidity bracket of axial fan based on topology optimization, with the advantage of higher installation stability.

[0005] To realize the above-mentioned purpose of higher installation stability, the utility model provides the following technical scheme: including fan shell, motor and support assembly, the motor is fixed on the support assembly, forms a complete fan main body, the fan main body can be detachably installed on the fan shell;

[0006] The support assembly includes flange ring and support rod, the support rod is provided with at least two, the support rod is all fixedly connected on the side end surface of the flange ring, and the position of the support rod is tangent to the flange ring, and the support rod is also provided as arcuate.

[0007] Preferably, one side of the support rod is fixed with support mounting block, the support mounting block is located on the side end surface of the support rod, the support mounting block is installed on the fan shell by bolt, the other side bottom of the support rod is provided as plane, and it is parallel to the support mounting block.

[0008] Preferably, the other side plane bottom of the support rod is welded on the side end surface of the flange ring, and the welding surface is mounting surface, the tangent surface of the support rod is also provided as square, and auxiliary connecting rod can be detachably arranged on the support rod.

[0009] Preferably, the flange ring is provided as circular ring, and a plurality of flow guide holes and mounting holes are formed on the flange ring, wherein the mounting holes are used for fixing the motor.

[0010] Preferably, the number of the flow guide holes and the mounting holes is two, and the two flow guide holes of each group are arranged on the two sides of the mounting hole, and the connecting part of the support rod and the flange ring is arranged between the two adjacent groups of flow guide holes and mounting holes.

[0011] Preferably, the motor is fixed on the flange ring through bolts, and a rotor is arranged in the motor, and a fan impeller is arranged on the rotor shaft of the rotor, and the fan impeller is located between the support assembly and the fan shell.

[0012] Preferably, a plurality of serrated notches are arranged at one side edge of each fan blade of the fan impeller.

[0013] Preferably, a fan cover is further arranged at the bottom of the fan shell, and a fan inner cavity is arranged in the fan shell, and the motor is arranged in the fan inner cavity.

[0014] Compared with the prior art, the axial flow fan lightweight high-rigidity support based on topology optimization has the following beneficial effects:

[0015] 1. The axial flow fan lightweight high-rigidity support based on topology optimization can increase the connecting surface size between the flange ring and the support rod, that is, increase the contact surface size of the mounting surface, so as to increase the connecting stability between the flange ring and the support rod, and make the support more stable and not easy to be separated.

[0016] 2. The axial flow fan lightweight high-rigidity support based on topology optimization is provided with a flat structure, the rigidity of the flange ring in the axial direction is greatly strengthened, the anti-vibration effect is effectively improved, the contact surface area of the flat structure facing the airflow is small, the influence of the support rod on the airflow is greatly reduced, the efficiency of the fan is increased, the impact of the airflow on the support rod is reduced, and deformation of the support rod is avoided.

[0017] 3. The axial flow fan lightweight high-rigidity support based on topology optimization is provided with the mounting holes and the flow guide holes, which can remove the excess material on the flange ring, reduce the overall weight of the support under the premise of meeting the rigidity requirement, reduce the cost, ensure the lightweight of the support, improve the smoothness of the airflow channel, avoid that the flange ring completely blocks the airflow, effectively improve the airflow of the fan, and improve the efficiency of the fan.

[0018] 4. The axial flow fan lightweight high-rigidity support based on topology optimization is provided with the auxiliary connecting rod, when the fan needs high-strength operation, the auxiliary connecting rod can be installed to tension the support rod again, so as to increase the stress points of the support rod, make the motor more stable, avoid deformation, and reduce the vibration of the whole fan. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present invention;

[0020] Figure 2 This is a side view of the structure of this utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 4 This is a schematic diagram of the support assembly structure of this utility model.

[0023] In the diagram: 10, fan casing; 101, fan cover; 102, fan inner cavity; 20, motor; 201, fan impeller; 30, flange ring; 301, guide hole; 302, mounting hole; 40, support rod; 401, support mounting block; 402, mounting surface; 403, auxiliary connecting rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1-4 As shown, the fan includes a fan housing 10, a motor 20, and a support assembly. The motor 20 is fixed on the support assembly to form a complete fan body. The fan body is detachably mounted on the fan housing 10. A fan cover 101 is also installed at the bottom of the fan housing 10. Inside the fan housing 10, there is a fan cavity 102. The motor 20 is located inside the fan cavity 102. The fan cover 101 can increase the protection of the motor 20 and prevent it from being easily damaged.

[0026] The bracket assembly comprises a flange ring 30 and a bracket rod 40, the bracket rod 40 is provided with at least two and is uniformly distributed in the circumference, the bracket rod 40 is fixedly connected to one side end face of the flange ring 30, the position of the bracket rod 40 is tangent to the flange ring 30, the other side plane bottom of the bracket rod 40 is welded to one side end face of the flange ring 30, the welding surface is a mounting surface 402, the tangent of the two can increase the connecting surface between the flange ring 30 and the bracket rod 40, that is, increase the contact surface size of the mounting surface 402, thereby increasing the connecting stability between the flange ring 30 and the bracket rod 40, making the whole bracket more stable and not easy to separate, one side of the bracket rod 40 is fixed with a bracket mounting block 401, the bracket mounting block 401 is located on one side end face of the bracket rod 40, the bracket mounting block 401 is installed on the fan shell 10 through bolts, the other side bottom of the bracket rod 40 is provided with a plane, which is parallel to the bracket mounting block 401, the bracket rod 40 is provided in an arc shape, the tangent surface of the bracket rod 40 is also provided in a square shape, that is, the whole bracket rod 40 is provided in a flat structure, which greatly strengthens the rigidity of the square in the axial direction of the flange ring 30, effectively increases the anti-shock effect, and the flat structure has a smaller contact surface area facing the airflow, greatly reduces the influence of the bracket rod 40 on the airflow, increases the efficiency of the fan, and at the same time reduces the impact of the airflow on the bracket rod 40, avoids deformation, and the bracket rod 40 is also detachably provided with an auxiliary connecting rod 403, wherein the auxiliary connecting rod 403 can be selectively installed on the bracket assembly through bolts and nuts, or can be directly fixed on the bracket assembly through welding, through the setting of the auxiliary connecting rod 403, when the fan needs high-strength operation, the auxiliary connecting rod 403 is installed to tighten the bracket rod 40 again, thereby increasing the stress point of the bracket rod 40, making the motor 20 more stable and not easy to deform, and at the same time, the overall vibration of the fan can be reduced.

[0027] The flange ring 30 is provided in a circular ring shape, and a plurality of flow guide holes 301 and mounting holes 302 are formed on the flange ring 30, wherein the mounting holes 302 are used to fix the motor 20, the number of the flow guide holes 301 is 2:1 of the mounting holes 302, two flow guide holes 301 of each group are arranged on both sides of the mounting hole 302, and the connection between the bracket rod 40 and the flange ring 30 is arranged between the adjacent two groups of flow guide holes 301 and mounting holes 302. Through the opening of the mounting hole 302 and the flow guide hole 301, on the one hand, the excess material on the flange ring 30 can be removed, the overall weight of the bracket is reduced under the premise of meeting the rigidity requirement, thereby reducing the cost and ensuring the light weight of the bracket, and on the other hand, the smoothness of the airflow channel can be improved, the airflow is prevented from being completely blocked by the flange ring 30, the air volume of the fan can be effectively improved through the hole, and the efficiency of the fan is improved.

[0028] The motor 20 is fixed on the flange ring 30 by bolts, and a rotor is arranged in the motor 20, a rotor shaft of the rotor is provided with a fan impeller 201, the fan impeller 201 is located between the bracket assembly and the fan shell 10, and a plurality of serrated notches are arranged at one side edge of each fan blade of the fan impeller 201, so that the weight of the entire fan can be further reduced, and the rotation speed of the fan blade is increased under the same power of the motor, so that the air volume of the fan is improved.

[0029] Working principle: during installation, the motor 20 can be first installed on the flange ring 30, then the fan impeller 201 is installed on the rotor shaft of the motor 20, and finally the motor 20 and the bracket assembly are fixed on the fan shell 10 through the bracket mounting block 401 on the bracket rod 40, so that the installation of the fan is completed.

[0030] In summary, the light-weight high-rigidity bracket of the axial flow fan based on topology optimization can increase the connection surface size between the flange ring 30 and the bracket rod 40 by tangency, that is, increase the contact surface size of the mounting surface 402, so as to increase the connection stability between the flange ring 30 and the bracket rod 40, and make the bracket more stable and not easy to be separated; that is, the overall structure of the bracket rod 40 is flat, which greatly strengthens the rigidity of the bracket rod 40 in the axial direction of the flange ring 30, effectively increases the anti-vibration effect, and the flat structure has a small contact surface area opposite to the airflow, greatly reduces the influence of the bracket rod 40 on the airflow, increases the efficiency of the fan, and reduces the impact of the airflow on the bracket rod 40, avoiding deformation; by arranging the auxiliary connecting rod 403, when the fan needs high-strength operation, the auxiliary connecting rod 403 can be installed to tension the bracket rod 40 again, so as to increase the stress points of the bracket rod 40 and make the motor 20 more stable and not easy to be deformed, and the overall vibration of the fan can also be reduced; by arranging the installation hole 302 and the flow guide hole 301, on the one hand, the excess material on the flange ring 30 can be removed, the overall weight of the bracket is reduced under the premise of meeting the rigidity requirement, so as to reduce the cost, ensure the light weight of the bracket, and on the other hand, the smoothness of the airflow channel can be improved, the flange ring 30 is prevented from completely blocking the airflow, the hole can effectively improve the air volume of the fan, and the efficiency of the fan is improved.

[0031] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. The scope of the present application shall be limited only by the claims.

[0032] While the embodiments of the present application have been shown and described with respect to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application. Therefore, the scope of the application should not be limited by the embodiments, but should be defined only in accordance with the following claims and their equivalents.

Claims

1. A topological optimization-based lightweight high-rigidity support for an axial flow fan, comprising a fan shell (10), a motor (20) and a support assembly, characterized in that: The motor (20) is fixed on the support assembly, forming a complete fan body, which is detachably installed on the fan shell (10); The support assembly comprises a flange ring (30) and support rods (40), at least two support rods (40) are provided, and the support rods (40) are fixedly connected to one side end face of the flange ring (30), and the positions of the support rods (40) are tangent to the flange ring (30), and the support rods (40) are also provided in an arcuate shape.

2. The lightweight high-rigidity bracket of the axial flow fan based on topology optimization according to claim 1, characterized in that: One side of the support rod (40) is fixed with a support mounting block (401), the support mounting block (401) is located on one side end face of the support rod (40), the support mounting block (401) is installed on the fan shell (10) through bolts, and the other side bottom of the support rod (40) is provided in a flat shape, which is parallel to the support mounting block (401).

3. The lightweight high-stiffness support of an axial flow fan based on topology optimization according to claim 2, characterized in that: The other side flat bottom of the support rod (40) is welded to one side end face of the flange ring (30), and the welding surface is an installation surface (402), the cutting surface of the support rod (40) is also provided in a square shape, and the support rod (40) is also detachably provided with an auxiliary connecting rod (403).

4. The lightweight high-rigidity bracket of the axial flow fan based on topology optimization according to claim 1, characterized in that: The flange ring (30) is provided in a circular ring shape, and a plurality of flow guide holes (301) and mounting holes (302) are formed on the flange ring (30), wherein the mounting holes (302) are used for fixing the motor (20).

5. The lightweight high stiffness bracket of an axial flow fan based on topology optimization according to claim 4, characterized in that: The number of the flow guide holes (301) and the mounting holes (302) is (2):(1), two flow guide holes (301) of each group are arranged on both sides of the mounting hole (302), and the connecting position of the support rod (40) and the flange ring (30) is arranged between the adjacent two groups of flow guide holes (301) and mounting holes (302).

6. The lightweight high stiffness bracket of an axial flow fan based on topology optimization of claim 1, wherein: The motor (20) is fixed on the flange ring (30) through bolts, the motor (20) is provided with a rotor, a fan impeller (201) is installed on a rotor shaft of the rotor, and the fan impeller (201) is located between the support assembly and the fan shell (10).

7. The lightweight high stiffness bracket of an axial flow fan based on topology optimization according to claim 6, characterized in that: A plurality of serrated notches are arranged at one side edge of each fan blade of the fan impeller (201).

8. The lightweight high stiffness bracket of an axial flow fan based on topology optimization of claim 1, wherein: The fan shell (10) is further provided with a fan cover (101) at the bottom, the fan shell (10) is internally provided with a fan inner cavity (102), and the motor (20) is arranged in the fan inner cavity (102).

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