EP 1704792 B1 20080827 - Hair dryer
Title (en)
Hair dryer
Title (de)
Haartrockner
Title (fr)
Sèche-cheveux
Publication
Application
Priority
JP 2005087419 A 20050325
Abstract (en)
[origin: EP1704792A1] A hair dryer (1) comprises a housing (2) having a substantially cylindrical air tunnel (3), a fan (6) provided in the air tunnel (3), a motor (7) for revolving the fan (6), and a heater (5). The fan (6) is a centrifugal fan having a revolution shaft (61), a circular disc (62) perpendicular to the revolution shaft (61), and a plurality of impeller blades (63) each provided substantially perpendicular to the circular disc (62) but curved with respect to a radial line passing the center axis of the revolution shaft (61). The outer diameter D1 of the fan (6) and the inner diameter D2 of the outlet (9) of airflow of the air tunnel (3) are selected so that the value D1/D2 in the region equal to or larger than 1.0 and equal to or smaller than 1.45, (1.0_D1/D2_1.45). Thereby, the hair dryer (1) can generate strong airflow with a constant volume without increasing rotation number of the motor (7) and without enlarging the outer diameter of the fan (6) by reducing the pressure loss due to the air tunnel.
IPC 8 full level
A45D 20/12 (2006.01)
CPC (source: EP KR US)
A45D 20/12 (2013.01 - EP KR US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1704792 A1 20060927; EP 1704792 B1 20080827; AT E406124 T1 20080915; CN 100438799 C 20081203; CN 1846560 A 20061018; DE 602006002411 D1 20081009; HK 1093141 A1 20070223; JP 2006263249 A 20061005; KR 100693085 B1 20070312; KR 20060103175 A 20060928; RU 2006108170 A 20071020; RU 2320248 C2 20080327; US 2006213074 A1 20060928
DOCDB simple family (application)
EP 06006042 A 20060323; AT 06006042 T 20060323; CN 200610067648 A 20060322; DE 602006002411 T 20060323; HK 06113944 A 20061219; JP 2005087419 A 20050325; KR 20060026459 A 20060323; RU 2006108170 A 20060315; US 37727706 A 20060317