High temperature resistant inserted type centrifugal fan

Abstract

Disclosed is a high temperature resistant inserted type centrifugal fan. The centrifugal fan comprises a drive motor with a long drive shaft, and a main fan with a main fan impeller and a main fan volute. The centrifugal fan is technically characterized in that the main fan is arranged at the front end of the long drive shaft, a cooler is arranged at the portion, between the drive motor and the main fan, of the long drive shaft, and the cooler is composed of a heat dissipation disc set and a structure cavity; the heat dissipation disc set is comb-shaped concentric heat dissipation pieces composed of a plurality of concentric wafers of different diameters, wherein the concentric wafers are made of heat conducting metal plates and are in pressing connection with the long drive shaft, and thestructure cavity is a cylindrical metal component provided with a heat dissipation air inlet and a heat dissipation air outlet; an air supply pipeline is composed of a pipeline, wherein one end of the pipeline is connected with the other end of an air supply fan, and the other end of the pipeline is connected with a heat dissipation air inlet; the drive motor with the long drive shaft is sequentially provided with a cooler and the main fan impeller on the long shaft and is coaxial with the cooler and the main fan impeller; a fixing disc is further arranged between the structure cavity and themain fan volute. When the motor stops rotation, the centrifugal fan is subjected to forced air cooling, and it is ensured that the motor drive shaft is cooled.

Description

technical field [0001] The invention relates to the technical field of high-temperature circulating fans, in particular to a wind-radiating and high-temperature-resistant plug-in centrifugal fan with direct-coupled shafts and low-temperature air as cooling mesons. Background technique [0002] The inventor applied for an invention patent on June 19, 2018: forced air-cooled high temperature resistant plug-in centrifugal fan. The inventor has assembled the 6.3# centrifugal main wind wheel and the 2# centrifugal auxiliary wind wheel on the same motor shaft on the 29th, the main wind wheel works under the temperature condition of 300°C, and is responsible for the selection of the auxiliary fan for forced air cooling 2# centrifugal wind wheel, when the air flow of the auxiliary fan reaches 500m³ / h, the shaft temperature of the motor is lower than 45°C. Through the prototype verification, the technical requirements of the invention patent of the forced air-cooled high-temperature...

AI Technical Summary

Problems solved by technology

However, in actual operation, it is also found that this scheme also has shortcomings. When the motor stops, the cooling capacity of the forced air-cooled auxiliary fan cannot meet the requirements. The measures to return from the working environment of 300°C to below 100°C cannot use this solution to solve the problem of motor cooling

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