CN218439821U - Airborne diagonal flow fan - Google Patents

Abstract

The utility model discloses a machine carries diagonal flow fan. The device comprises a front disc, a shell, a rear disc, an impeller, a stationary blade, a flow guide cover, a motor, a bracket and a shock absorber; the front end of the shell is provided with a front disc, and the rear end of the shell is provided with a rear disc; the bracket is arranged at the lower end of the shell; the shock absorber is arranged on the bracket; the motor is arranged in the static blade, and the static blade is arranged in the shell; the impeller is arranged at the shaft end of the motor and forms a flow passage with the front disc; the guide cover is arranged at the rear side of the static blade and forms a flow passage with the rear disk. The utility model has the advantages of improve fan efficiency, noise reduction.

Description

Airborne diagonal flow fan

Technical Field

The utility model relates to a machine carries oblique flow fan.

Background

At present, fans for ventilation or heat dissipation on an airplane are mainly axial flow fans, and with the weight reduction design and the compact structure design of a system and the airplane, the diameter of a pipeline is gradually reduced, so that the resistance of the pipeline of the system is increased, the pressure rise requirement of the fans is increased, and the common axial flow fans cannot meet the requirement. The centrifugal fan is heavy due to large size and is difficult to use on the machine. The diagonal flow fan has characteristics of both axial flow and centrifugal fan, has a compact structure and a high pressure, and has been widely used on the machine.

Along with the technical development, the airborne product has higher requirement on the efficiency, the high-efficiency product can reduce the energy consumption, reduce the flight cost of the airplane and increase the endurance mileage, so the improvement of the working efficiency of the airborne fan is very critical.

Noise directly affects the comfort of airborne personnel, and airborne noise is mainly a rotating mechanical rotating product, so noise control of a fan is also particularly important.

Therefore, there is a need for an airborne fan that is compact, efficient, and low in noise.

Disclosure of Invention

The utility model aims at providing a machine carries oblique flow fan has fan compact structure, efficient, characteristics that the noise is low.

In order to realize the purpose, the technical scheme of the utility model is that: an airborne diagonal flow fan is characterized in that: the device comprises a front disc, a shell, a rear disc, an impeller, a stationary blade, a flow guide cover, a motor, a bracket and a shock absorber;

the front end of the shell is provided with a front disc, and the rear end of the shell is provided with a rear disc;

the bracket is arranged at the lower end of the shell; the shock absorber is arranged on the bracket;

the motor is arranged in the static blade, and the static blade is arranged in the shell;

the impeller is arranged at the shaft end of the motor and forms a flow passage with the front disc;

the guide cover is arranged at the rear side of the static blade and forms a flow passage with the rear disk.

In the above technical solution, the impeller includes 11 airfoil blades; the impeller is mounted at an angle of 60 °.

In the technical scheme, the included angle between the front disc and the axis is 60 degrees.

In the above technical solution, the vane includes 15 airfoil blades.

The utility model has the advantages of as follows:

the utility model relates to a diagonal flow fan, which adopts a diagonal flow structure to lead the size of the fan to be compact as much as possible, the noise to be low and the flow to be small and the pressure to be raised; the impeller adopts 11 airfoil blades, the stationary blade adopts 15 airfoil blades, the efficiency of the fan can be improved, and the noise can be reduced; the fan is provided with the vibration absorber, so that the noise generated by the vibration of the fan can be reduced; the utility model discloses can extensively use on the equipment that the space is little, to the performance requirement is high.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the impeller of the present invention.

Fig. 3 is a schematic structural view of the front plate of the present invention.

Fig. 4 is a schematic structural view of a stationary blade according to the present invention.

In fig. 2, a denotes an airfoil blade on the impeller.

In the body 3, a denotes the angle of the front disc with the axis, which is 60 °.

In fig. 4, B denotes an airfoil blade on a vane.

In the figure, 1-a front disk, 2-a shell, 3-a rear disk, 4-an impeller, 5-a stator blade, 6-a guide cover, 7-a motor, 8-a bracket and 9-a shock absorber.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings, which are not intended to limit the present invention, but are merely exemplary. While the advantages of the invention will be clear and readily appreciated by the description.

With reference to the accompanying drawings: an airborne diagonal flow fan comprises a front disc 1, a shell 2, a rear disc 3, an impeller 4, a stationary blade 5, a flow guide cover 6, a motor 7, a bracket 8 and a shock absorber 9;

the front end of the shell 2 is provided with a front disc 1, and the rear end is provided with a rear disc 3;

the bracket 8 is arranged at the lower end of the shell 2; the vibration absorber 9 is arranged on the bracket 8, and the vibration absorber is arranged on the fan, so that the noise generated by the vibration of the product can be reduced;

the motor 7 is arranged in the static blade 5, and the static blade 5 is arranged in the shell 2;

the impeller 4 is arranged at the shaft end of the motor 7 and forms a flow channel with the front disc 1;

the guide cover 6 is installed at the rear side of the stationary blade 5 to form a flow passage with the rear disk 3.

Further, the impeller 4 comprises 11 airfoil blades; the installation angle of the impeller 4 is 60 degrees, the outer diameter of the inlet of the impeller is reduced, and the pneumatic noise can be effectively controlled. The impeller adopts 11 airfoil blades, and the stator blade adopts 15 airfoil blades.

The utility model discloses a revise wheel hub and head disk inclination, blade installation angle, it is 41 with the axis contained angle to obtain optimum wheel hub, and the head disk is 60 with the axis contained angle, and blade installation angle is 60 for fan pressure rise, efficiency are the highest. Domestic and foreign machine carries diagonal flow fan efficiency and is 60% ~ 75%, the fan efficiency can reach 79.8%. The wing section blade can reduce the vortex noise, promotes the aerodynamic efficiency, the utility model provides an impeller 4 adopts 11 blades can avoid the interference of quiet leaf, can improve the fan aerodynamic efficiency 4.6% through calculating this scheme.

Furthermore, the included angle between the front disc 1 and the axis is 60 degrees, so that the loss in the flowing process can be reduced on the premise of ensuring the performance.

Further, quiet leaf 5 includes 15 airfoil blades, the utility model discloses a 15 blades are convenient for install, and static pressure recovery efficiency is higher.

The fan adopts the structure of oblique flow impeller with the quiet leaf of axial compressor, and the fan structure can be more compact under satisfying the performance requirement.

Other parts not described belong to the prior art.

Claims (4)

1. An airborne diagonal flow fan is characterized in that: comprises a front disc (1), a shell (2), a rear disc (3), an impeller (4), a stationary blade (5), a guide cover (6), a motor (7), a bracket (8) and a shock absorber (9);

the front end of the shell (2) is provided with a front disc (1), and the rear end is provided with a rear disc (3);

the bracket (8) is arranged at the lower end of the shell (2); the shock absorber (9) is arranged on the bracket (8);

the motor (7) is arranged in the static blade (5), and the static blade (5) is arranged in the shell (2);

the impeller (4) is arranged at the shaft end of the motor (7) and forms a flow channel with the front disc (1);

the guide cover (6) is arranged on the rear side of the static blade (5) and forms a flow passage with the rear disc (3).

2. The airborne diagonal flow fan of claim 1, wherein: the impeller (4) comprises 11 airfoil blades; the installation angle of the impeller (4) is 60 degrees.

3. The airborne diagonal flow fan of claim 1 or 2, wherein: the included angle between the front disc (1) and the axis is 60 degrees.

4. The airborne diagonal flow fan of claim 3, wherein: the stator blade (5) comprises 15 airfoil blades.

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