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1. EP1134423 - A blower

Office
European Patent Office
Application Number 00308797
Application Date 05.10.2000
Publication Number 1134423
Publication Date 19.09.2001
Publication Kind B1
IPC
F04D 29/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
04Shafts or bearings, or assemblies thereof
F04D 29/056
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
05Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
056Bearings
F04D 25/06
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
25Pumping installations or systems specially adapted for elastic fluids
02Units comprising pumps and their driving means
06the pump being electrically driven
F04D 25/08
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
25Pumping installations or systems specially adapted for elastic fluids
02Units comprising pumps and their driving means
08the working fluid being air, e.g. for ventilation
F04D 29/059
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
05Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
056Bearings
059Roller bearings
F04D 29/32
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
26Rotors specially adapted for elastic fluids
32for axial-flow pumps
CPC
F04D 29/0563
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
05Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
056Bearings
0563Bearings cartridges
F04D 29/059
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
05Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
056Bearings
059Roller bearings
Applicants MINEBEA KK
Inventors OBARA RIKURO
Priority Data 2000070058 14.03.2000 JP
Title
(DE) L├╝fter
(EN) A blower
(FR) Ventilateur
Abstract
(EN)
A blower or fan for cooling office automation equipment comprising an impeller with blades (11) and a base (3) with a bearing member (4) extending therefrom on which a stator (5) is mounted including an iron core (5a) and coils (5b). A rotor yoke (8) with magnets (9) on an inwardly facing surface of a yoke flange (8b) is mounted for rotation with respect to the stator (5) by means of a bearing assembly including a shaft (7) with a larger diameter portion (7a), an inner race member mounted on a smaller diameter shaft portion (7b), a sleeve (6) and first and second rows of balls respectively running between a race formed around the larger diameter portion (7a) and one formed around the inner race member and complementary races in the sleeve (6). The sleeve (6) may be secured in the bearing member (4) and the yoke (8) connected to an end of the shaft (7) with the stator mounted directly around the bearing member (4) or around a sleeve portion extending therefrom.