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1. (WO2018203366) ELECTRIC BLOWER, ELECTRIC VACUUM CLEANER, AND HAND DRIER

Pub. No.:    WO/2018/203366    International Application No.:    PCT/JP2017/017142
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Tue May 02 01:59:59 CEST 2017
IPC: F04D 29/58
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
MITSUBISHI ELECTRIC HOME APPLIANCE CO., LTD.
三菱電機ホーム機器株式会社
Inventors: ADACHI, Naho
安達 奈穂
IKEDA, Takashi
池田 尚史
TSUCHIDA, Kazuchika
土田 和慶
HAYATSU, Mamoru
早津 守
HAMAZAKI, Mitsumasa
浜崎 光将
TERAMOTO, Masaya
寺本 昌也
Title: ELECTRIC BLOWER, ELECTRIC VACUUM CLEANER, AND HAND DRIER
Abstract:
Provided are: an electric blower in which air blowing efficiency and cooling efficiency with respect to an electric motor part are improved; and an electric vacuum cleaner and a hand drier that are provided with the electric blower. An electric blower (1) is provided with: an electric motor part (2); a shaft (5); a centrifugal impeller (6); a fan cover (14) that contains the centrifugal impeller (6); an electric motor part case (19) that contains the electric motor part (2) and has a ventilation hole (32) disposed therein; and a bracket (20) that is disposed on the electric motor part (2) side with respect to the centrifugal impeller (6) in a direction in which the center axis line (O) of the shaft (5) extends. The bracket (20) includes: a first section (21) that is located on the outer circumferential side with respect to the ventilation hole (32) in a radial direction around the center axis line (O); and a second section (22) that is located on the outer circumferential side with respect to the first section (21) and on the outer circumferential side with respect to the outer circumference of the electric motor part case (19) in the radial direction. The bracket (20) has a first air passage and a second air passage formed therein, both of which are connected to an air passage formed by the centrifugal impeller (6) and the fan cover (14). The first air passage is demarcated at least by the inner circumferential surface of the first section (21), and the second air passage is demarcated at least by the outer circumferential surface of the first section (21) and the inner circumferential surface of the second section (22).