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Axial flow fan blade, fan assembly, air conditioner outdoor unit and air conditioner

An axial flow fan blade and blade technology, which is used in fan components, air conditioner outdoor units, air conditioners, and axial flow fan blades to achieve the effects of optimizing the air flow field, reducing impact, and weakening blade tip vortices

Pending Publication Date: 2022-01-04
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The fan system of the outdoor unit of the air conditioner is composed of a motor, a motor bracket, an axial fan blade, a guide ring, and a grille. The aerodynamic performance of the axial fan blade, the guide ring, and the grille directly affects the heat transfer efficiency of the fan system. Based on the idea of ​​aerodynamic noise optimization, the above three components all have a large room for improvement

Method used

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  • Axial flow fan blade, fan assembly, air conditioner outdoor unit and air conditioner
  • Axial flow fan blade, fan assembly, air conditioner outdoor unit and air conditioner
  • Axial flow fan blade, fan assembly, air conditioner outdoor unit and air conditioner

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Experimental program
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Effect test

Embodiment 1

[0087] This embodiment proposes an axial-flow fan blade, such as Figure 1-Figure 9 As shown, it includes a hub 9 and a plurality of blades 8 arranged on the outer surface of the hub 9. The plurality of blades 8 are evenly distributed on the outer surface of the hub 9 at a certain installation angle. The plurality of blades 8 are centered on the center of the hub 9, and the blades The length of 8 is rotating within the circumference of the radius, and the direction of rotation is as follows figure 1 direction indicated by the arrow. Set the radius of the circle as R, optional R=576mm; for example figure 2 As shown, the thickness of the axial fan blade 1 is set to H, and optionally, the thickness of the blade 8 is H=203mm. The blade 8 includes a first end face 14 and a second end face 15 arranged on the back, the first end face 14 faces away from the motor 4 connection end of the hub 9, and the second end face 15 faces the motor 4 connection end of the hub 9; the first end f...

Embodiment 2

[0116] This embodiment also proposes a fan assembly, which includes the axial flow blade 1 of the first embodiment above. Such as Figure 10-Figure 14 As shown, the fan assembly of the present embodiment includes a guide ring 2, and the axial fan blade 1 is located in the annular space formed by the guide ring 2; Figure 12 As shown, the guide ring 2 includes a collector part 18, a throat part 19 and a diffuser part 20 connected in sequence along the airflow direction; the guide ring 2 is a semi-closed guide ring 2, that is, the guide ring 2 only covers the axial flow wind. A part of the blade 1, the direction of the airflow flows from the collecting part 18 to the direction of the diffusing part 20; The velocity direction changes at the point, and the backflow of air can be attenuated through the arc section to improve the flow field.

[0117] Such as Figure 12 As shown, the line shape of the header 18 in the radial section of the guide ring 2 is a circular arc; the line ...

Embodiment 3

[0131] The third purpose of this embodiment also proposes an air conditioner outdoor unit, such as Figure 18-Figure 20 As shown, the air conditioner includes a housing 7, and the fan assembly of Embodiment 2 is arranged in the housing 7.

[0132] The outdoor unit of the air conditioner in this embodiment includes an axial flow vane 1, a guide ring 2, a grille, a motor 4, a motor bracket 5, a condenser 6, and a housing 7. The axial flow vane 1 is installed on the motor 4, and the motor 4 is installed on the motor bracket 5, the motor bracket 5 is connected and fixed with the condenser 6 and the casing 7, the guide ring 2 is installed inside the casing 7, coaxial with the axial fan blade 1, and the grille is installed outside the casing 7, Coaxial with the axial fan blade 1;

[0133] Further optionally, a ventilation hole is provided on the casing 7, the fan assembly is located at the ventilation hole, and a grid structure 3 is installed on the ventilation hole, such as Figu...

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Abstract

The invention relates to the technical field of air conditioners, in particular to an axial flow fan blade, a fan assembly and an air conditioner outdoor unit. The axial flow fan blade comprises a hub and a plurality of blades arranged on the outer side face of the hub, each blade comprises a first end face and a second end face which are arranged back to back, the first end face is back to a motor connecting end of the hub, and the second end face faces the motor connecting end of the hub. and a plurality of base circles with the center of the hub as the circle center and with the radiuses gradually increased or decreased in sequence are set, and the first end face and the second end face are formed by fitting coordinate points of contour lines on the sections of the base circles correspondingly. According to the axial flow fan blade, the heat exchange efficiency can be remarkably improved, and noise can be remarkably reduced.

Description

technical field [0001] The invention belongs to the field of air conditioners, and in particular relates to an axial fan blade, a fan assembly, an outdoor unit of an air conditioner and an air conditioner. Background technique [0002] The fan system is the main part of the outdoor unit of the air conditioner for heat dissipation and air supply. When the fan system is working, the motor drives the motor shaft to rotate and pulls the fan impeller to rotate at high speed, and the mechanical energy of the rotating shaft is converted into the pressure energy and kinetic energy of the air through the fan system, thereby accelerating heat dissipation. In the above energy conversion process, there are often mechanical losses, volume losses and flow losses. The efficiency of the fan system is usually measured by the impeller efficiency (that is, the ratio of the actual effective energy obtained by the fan system to transport the gas per unit time to the impeller power). When the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/38F04D29/58F04D29/66F24F1/38F24F1/0003F24F13/08
CPCF04D29/388F04D29/582F04D29/663F24F1/38F24F1/0003F24F13/082
Inventor 杨锦文肖彪李彬陈成胡佳伟
Owner GREE ELECTRIC APPLIANCES INC
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