JPS5881399U

JPS5881399U - electric blower

Info

Publication number: JPS5881399U
Application number: JP17672681U
Authority: JP
Inventors: 桜井　照男; 文夫常楽
Original assignee: 株式会社日立製作所
Priority date: 1981-11-30
Filing date: 1981-11-30
Publication date: 1983-06-02

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来の電動送風機を示す縦断面図、第２図は第
１図ディフューザの軸方向視図（ＩＩ−ｎ矢視図）、第
３図は第１図戻り案内翼の軸方向視図（ＩＩ−１矢視図
）、第４図は第１図電動機吸気口の軸方向視図（ＩＶ−
ＩＶ矢視図）、第５図はこの考案の仕切板及び戻り案内
翼の縦断面図、第６図はこの考案の他の実施例の部分的
縦断面図である。３・・・羽根車、６・・・エンドブラケット、７・・・
仕切板、９・・・ディフューザ翼、１０・・・戻り案内
翼。Fig. 1 is a longitudinal sectional view showing a conventional electric blower, Fig. 2 is an axial view of the diffuser in Fig. 1 (viewed from arrow II-n), and Fig. 3 is an axial view of the return guide vane in Fig. 1. Figure 4 is an axial view of the motor intake port in Figure 1 (IV-1).
5 is a longitudinal sectional view of the partition plate and return guide vane of this invention, and FIG. 6 is a partial longitudinal sectional view of another embodiment of this invention. 3... Impeller, 6... End bracket, 7...
Partition plate, 9... Diffuser blade, 10... Return guide blade.

Claims

[Claims for Utility Model Registration] A centrifugal impeller is coupled to the rotating shaft of an electric motor, a cylindrical casing is provided on the outside of i, the casing is coupled to the electric motor by a disk-shaped end bracket, and the impeller is A disk-shaped partition plate is arranged on the back surface 1, and a diffuser blade is provided on the front surface of the partition plate and the outer periphery of the impeller, and a return guide blade is provided protruding from the rear surface of the partition plate. In the case where an annular gap is formed between The thickness of the outer peripheral portion is made thicker than the inner peripheral portion, and the cross-sectional shape is rounded, and the width of the flow path in the meridional cross section of the flow path formed between the partition plate and the end bracket is made within the meridional plane. An electric blower characterized in that the blower decreases as it goes around the outer periphery of the partition plate.