EP 2000070 A3 20091014 - Motor blower and electric vacuum cleaner using same
Title (en)
Motor blower and electric vacuum cleaner using same
Title (de)
Motorgebläse und elektrischer Staubsauger damit
Title (fr)
Ventilateur électrique et aspirateur électrique l'utilisant
Publication
Application
Priority
JP 2007151937 A 20070607
Abstract (en)
[origin: EP2000070A2] A motor blower (1) includes an electric motor (4) having a rotating shaft (3), a centrifugal blower (2) having a plurality of blower blades (34) and attached to the rotating shaft (3) of the electric motor (4), and a diffuser (21) having a plurality of diffuser blades (25) each of which is positioned at an outer peripheral portion of the centrifugal blower (21) so as to be opposed to air outlet portions formed to a circumferential surface of the centrifugal blower (21). Each of the blower blades (34) has a front end portion (34b) which is formed to almost linearly incline from one end portion toward another end portion of the blower blade (34). Due to the above structure, the motor blower (2) and the electric vacuum cleaner using the motor blower (2) can suppress or reduce a generation of abnormal noise even under operational conditions of low airflow rate and high frequency region.
IPC 8 full level
A47L 5/36 (2006.01); A47L 9/00 (2006.01); F04D 29/44 (2006.01); F04D 29/66 (2006.01)
CPC (source: EP KR)
A47L 5/22 (2013.01 - EP); A47L 9/0081 (2013.01 - EP); A47L 9/22 (2013.01 - KR); A47L 9/28 (2013.01 - KR); F04D 29/282 (2013.01 - EP); F04D 29/288 (2013.01 - EP); F04D 29/30 (2013.01 - EP); F04D 29/44 (2013.01 - KR); F04D 29/441 (2013.01 - EP); F04D 29/666 (2013.01 - EP)
Citation (search report)
- [X] US 2005169750 A1 20050804 - KIM WOOK [KR], et al
- [X] NL 7015615 A 19720426
- [X] JP S52112507 U 19770826
- [X] EP 1669014 A2 20060614 - SAMSUNG KWANGJU ELECTRONICS CO [KR]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
EP 2000070 A2 20081210; EP 2000070 A3 20091014; EP 2000070 B1 20120201; CN 101319682 A 20081210; JP 2008303793 A 20081218; KR 20080108021 A 20081211; RU 2008122877 A 20091220; RU 2388400 C2 20100510
DOCDB simple family (application)
EP 08251979 A 20080606; CN 200810108306 A 20080606; JP 2007151937 A 20070607; KR 20080052572 A 20080604; RU 2008122877 A 20080606