Blower fan integral wheel and method of manufacture

Abstract

The invention relates to the technical field of ventilators, in particular to a ventilator integral impeller and method for preparation. An impeller angle is not accurate, which is caused by the affect of many reasons which are machining error, blade installation angle measurement error, electric welding thermal deformation error and worker processing technical level and the like, thereby the intensity of a ventilator fan is reduced, the noise is increased, the work efficiency is low, the power consumption is large and the maintenance ratio is high. In order to overcome the above defects, the invention uses the technical scheme that the ventilator integral impeller comprises a blade, a hub, a spoke and a bearing sleeve, wherein the blade, the hub, the spoke and the bearing sleeve are a whole body which are connected together through casting in one time. The ventilator integral impeller is made through casting in one time, the problems which are common in processing of the impellers such as rosin joint and unclosed riveting and the like do not exist, the intensity is high, the security is excellent, the production cost is low, the energy consumption is saved, the environmental condition is improved, and the economic benefit is increased.

Description

technical field [0001] The invention relates to the technical field of ventilators, in particular to an integral fan impeller and a manufacturing method thereof. Background technique [0002] The energy consumption and noise of the ventilator are directly related to its core component - the fan blade, and the blade technology determines the final performance of the ventilator. The small deviations in the connection method between the fan blade and the hub, the installation angle, and the processing method will have a major impact on the performance of the fan. [0003] The fan blades of the existing ventilator are individually processed for each fan blade, and are formed in a single piece by processing methods such as wrenching, welding, and die-casting, because each blade of the existing high-pressure, high-air-volume fan fan There are overlapping projections along the axial direction of the impeller. The traditional mold processing method cannot proces...

AI Technical Summary

Problems solved by technology

[0003] The fan blades of the existing ventilator are individually processed for each fan blade, and are formed in a single piece by processing methods such as wrenching, welding, and die-casting, because each blade of the existing high-pressure, high-air-volume fan fan There are overlapping projections along the axial direction of the impeller. The traditional mold processing method cannot process the entire impeller. Therefore, current fan manufacturers use the blades to be formed separately and then fixed on the hub by riveting. This processing method is because the hub and the blades are processed separately. During combined welding, due to the influence of many reasons such as processing error, blade installation angle measurement error, electric welding thermal deformation error, and worker processing technology level, the blade will be deformed and the blade angle will be inaccurate, which will reduce the strength of the fan fan, increase the noise, and work. Low efficiency, huge power consumption and high maintenance rate

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