HIGH-STRENGTH CENTRIFUGAL IMPELLER SUITABLE FOR DUST COLLECTOR AND ELECTRIC MOTOR

WIPO Patent Application WO/2020/108363

A1

Disclosed is a high-strength centrifugal impeller suitable for a dust collector, comprising an impeller upper cover (1), an impeller lower cover (2), and centrifugal blades (3). The impeller lower cover (2) and the impeller upper cover (1) are concentric and have the same center axis. The centrifugal blades (3) are circumferentially arranged along the center axis at equal intervals. Each of the upper edge surface (31) and the lower edge surface (32) of each centrifugal blade (3) is provided with at least two connecting points (5) so as to realize fixed connection with the impeller upper cover (1) and the impeller lower cover (2) respectively, and the distance between each connecting point (5) and the corresponding outer end part of the upper edge surface (31) or the lower edge surface (32) is less than or equal to 0.2mm. The distribution density of the connecting points (5) does not need to be increased, the vibration amplitudes of the end parts of the upper edge surfaces (31) and the lower edge surfaces (32) of the centrifugal blades (3) can be reduced merely by limiting the relative positions of the connecting points (5), so that connecting strength and fatigue durability are improved.

ZHU YUNFANG (CN)

PCT/CN2019/119686

June 04, 2020

November 20, 2019

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SUZHOU IND PARK XINGDESHENG MOTOR CO LTD (CN)

F04D29/28; A47L9/28; F04D29/30; F04D29/66

CN109340179A	2019-02-15
CN209370151U	2019-09-10
CN104806565A	2015-07-29
CN201225318Y	2009-04-22
DE102011000208A1	2012-07-19
JP2013007339A	2013-01-10
JPS6060300A	1985-04-06
JPH1073097A	1998-03-17
JP2008121650A	2008-05-29

SUZHOU HUABO INTELLECTUAL PROPERTY AGENCY CO.LTD (CN)

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