Electric blowing fan and electric vacuum cleaner equipped therewith

Abstract

The invention relates to an electrical blower and an electric dust collector equipped with it. The invention aims to solve the problem that: the shell is distorted while the fan casing is pressed into; and the fan casing can not be kept on the set position, and the eccentricity and inclined installation of the fan casing can reduce the efficiency of the electrical blower. The electrical blower in the invention comprises: a shell for containing the motor, a fan casing installed on the shell covering the centrifugal fan and the diffuser; an extruding part is formed on the opening edge of one end of the shell; a fan casing installing component disposed from the extruding part to the centrifugal fan side or its opposite side; and an installing part contacting with the installing component and a non-installing part not connecting with the installing component are disposed on the inner surface of the fan casing.

Description

technical field [0001] The present invention relates to an electric blower and an electric vacuum cleaner equipped with it. Background technique [0002] In an existing electric blower for an electric vacuum cleaner, a diffuser is arranged between a centrifugal fan installed on a rotor shaft protruding from the motor housing and an air passage in the motor housing, and the diffuser and the fan motor housing are covered and the motor is covered. The fan cover is attached to the outer peripheral protrusion of the one-end opening edge of the housing. [0003] The edge portion of one end opening of the motor housing on which the fan cover is installed includes: an annular plane portion integrally protruding outward from the opening edge of one end of the housing main body; the front end of the plane portion is bent parallel to the main body to the opposite side of the fan and an outer peripheral protrusion bent outward from the front end of the cylindrical portion, and notches ...

AI Technical Summary

Problems solved by technology

[0009] However, since the diffuser is molded from synthetic resin, it is difficult to obtain the dimensional accuracy of the outer circumference. Furthermore, since the tail bracket and the screws of the sheet metal processed product are used to fix it, it is difficult to obtain the same degree of accuracy between the outer circumference of the tail bracket pressed into the fan cover and the outer circumference of the diffuser. axis

Therefore, there is a danger of damaging the diffuser or the tailstock when pressing the fan cover, and there is a problem that the fan cover cannot be maintained at a predetermined position.

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