Title:
ELECTRIC BLOWER, ELECTRIC VACUUM CLEANER, AND HAND DRIER
Document Type and Number:
WIPO Patent Application WO/2018/203366
Kind Code:
A1
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).
Inventors:
ADACHI NAHO (JP)
IKEDA TAKASHI (JP)
TSUCHIDA KAZUCHIKA (JP)
HAYATSU MAMORU (JP)
HAMAZAKI MITSUMASA (JP)
TERAMOTO MASAYA (JP)
IKEDA TAKASHI (JP)
TSUCHIDA KAZUCHIKA (JP)
HAYATSU MAMORU (JP)
HAMAZAKI MITSUMASA (JP)
TERAMOTO MASAYA (JP)
Application Number:
PCT/JP2017/017142
Publication Date:
November 08, 2018
Filing Date:
May 01, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
MITSUBISHI ELECTRIC HOME APPLIANCE CO LTD (JP)
MITSUBISHI ELECTRIC HOME APPLIANCE CO LTD (JP)
International Classes:
F04D29/58
Foreign References:
| JP2001342996A | 2001-12-14 | |||
| JP2011080427A | 2011-04-21 | |||
| JPS50119006U | 1975-09-29 | |||
| US20160053775A1 | 2016-02-25 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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