Air conditioner axial flow fan and air duct

Abstract

The invention discloses an air duct of an air conditioner axial flow fan. The air duct comprises an inlet diversion segment, a straight segment and a diffusion segment. Air flow enters through the inlet diversion segment, flows in the axial direction and is output of the diffusion segment. The inlet diversion segment, the straight segment and the diffusion segment are integrally prepared. The inlet diversion segment is a hollow and smooth conical arc-shaped circular truncated cone body. The diameter of the inner wall of the inlet diversion segment successively decreases in the axial directionwith an air inlet as the start. The straight segment is a hollow cylinder with all the cross sections equal. The cross sectional area of the diffusion segment successively increases in the axial direction with the an air outlet of the straight segment as the start. The sum of the axial height of the inlet diversion segment and the axial height of the straight segment is larger than the axial height of the diffusion segment. With the air conditioner axial flow fan with the air duct, the noise of the flow fan can be obviously reduced, the performance and the efficiency of the flow fan can be improved, the integrated making technology of the air duct is simple, and the flow fan is easy and convenient to install and maintain.

Description

technical field [0001] The invention relates to a ventilator, in particular to an axial flow fan and a blower used for air conditioning. Background technique [0002] With the development of the national economy, the living standards of our people are improving day by day, and refrigeration and air conditioning equipment are inseparable from people's daily work and life. The ventilator is an essential part of the air conditioner, and its performance greatly affects the quality of the entire air conditioner unit. Therefore, it is of great significance to select the appropriate ventilator product for the air conditioner manufacturing enterprise. The air flow of the axial flow fan flows along the axial direction in the flow channel of the rotating blade, and has the characteristics of small pressure coefficient, high specific speed, relatively small structural size, and easy installation. Therefore, the axial flow fan is suitable for occasions with large air volume and small i...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned technical solution 1: Usually, the diffuser pipe section is connected with the outlet of the ventilator cylinder by means of bolt connection, which will add a pair of connecting flanges and several sets of connecting bolts, making the structure more complex and increasing the cost of materials and processes ;

[0005] The second technical solution above: Although this solution has a simple structure and will not increase the cost of materials and processes, the improvement effect produced is not significant enough

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