Motor and vacuum cleaner

US12294282B2 · kind B2 · utility

Assignees

• GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI · CN
• ZHUHAI KAIBANG MOTOR MANUFACTURE CO., LTD · CN

Inventors

• Bin Chen · Nanhu, CN
• Yusheng Hu · Beijing, CN
• Shengyu Xiao · Tangxia, CN
• Lin Tang · Sichuan, CN
• Shaoxuan Zhu · Longbeilingcun, CN
• Weili SUN · Beijing, CN
• Guomang Yang · Zhuhai, CN
• Jinlong Wang · Dongguan, CN
• Zhidong Zhang · Nanhu, CN

Key dates

• Filing date: Sep 4, 2020
• Grant date: May 6, 2025
• Expiry date: Sep 4, 2041

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F05D2250/52
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A motor includes a housing, an impeller and a diffuser in the housing, a rotor assembly and a stator assembly, the motor has an air inlet on the housing and an air outlet, the impeller is disposed adjacent to the air inlet and is connected to the rotor assembly, the diffuser is located downstream of the impeller, the stator assembly is located downstream of the diffuser, the housing includes a front housing and a rear housing connected to each other, a first air duct is enclosed among a rear inner wall of the front housing, a front inner wall of the rear housing and the diffuser and in communication with an outlet of the impeller and the air outlet, and an inner diameter size of the rear end of the rear inner wall is less than or equal to that of the front end of the front inner wall.