Fan blade capable of blowing air in diffused mode and fan blade support

Abstract

The invention provides a fan blade capable of blowing air in a diffused mode and a fan blade support. The fan blade capable of blowing air in the diffused mode is provided with five blade bodies and is designed according to the data parameters such as the blade root curve, the blade tip curve, the front edge curve, the rear edge curve, a hub external diameter and the blade external diameters. According to the fan blade capable of blowing air in the diffused mode, the external diameter is small, the blast capacity is high, and noise generated by the fan blade is low; through the designed blade curved surface structure, air is blown by the fan blade in the diffused mode instead of the focused mode; in addition, due to the fact that blade bodies with even thicknesses are replaced by the blade bodies with gradually-changed thicknesses, deformation of the blade bodies when the blade bodies operate can be reduced; furthermore, turbulent air flow is generated on the tip of the blade when the fan blade rotates, noise generated by the fan blade can be lowered. By the adoption of the fan blade support which is used in cooperation with the fan blade capable of blowing air in the diffused mode, the blast capacity of the fan blade can be effectively improved, the air blown by the fan blade can be better diffused around, and electric elements which are arranged around the fan blade can be better cooled by the fan blade.

Description

technical field [0001] The present invention relates to the field of home appliances, and more specifically relates to a diffused blowing fan blade and a fan blade bracket used in conjunction with the diffused blowing fan blade. Background technique [0002] With the improvement of people's living standards, microwave ovens with large air volume and low noise are urgently needed by people. The design of the fan blades on the microwave oven needs to meet the heat dissipation function and at the same time control the noise within the tolerance range of people. [0003] Such as figure 1 As shown, the microwave oven includes: U board 100', top board 101', rear board 102', bottom board 103', magnetron 104', waveguide 105', DC power supply board, fan assembly (including motor, fan blade and fan blade Bracket) 107', frequency converter assembly (including frequency converter and frequency converter IGBT) 108', air guide cover 109', etc. The waveguide is welded on the outside of ...

AI Technical Summary

Problems solved by technology

[0004] The wind direction of the wind blown by the fan blades in the prior art is difficult to achieve sufficient heat dissipation for the magnetron and transformer components separately arranged up and down at the same time

The fan blade (4-blade fan blade) tends to cause resonance when it rotates, causing the fan blade to shake, generate noise, and cause the wind direction to be unstable, reducing the heat dissipation performance of the fan blade

The specific reasons include: the design of the fan blade adopts the method of increasing the outer diameter to increase the air volume (the outer diameter is 124m), and the curved surface design of the blade is relatively simple (the leading edge curve, the trailing edge curve, the blade root curve and the blade tip curve are all Curve of a single radian), in addition, the thickness of the designed blade is uniform (1mm), the fan blade of this structure will produce a lot of aerodynamic noise when it is working, and the microwave oven seriously affects people's daily life and produces disgust

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