EP 1703138 A2 20060920 - Blower
Title (en)
Blower
Title (de)
Gebläse
Title (fr)
Ventilateur
Publication
Application
Priority
JP 2005048370 A 20050224
Abstract (en)
A blower includes a multiblade fan (3) and a scroll casing (4) accommodating the multiblade fan (3) therein. The scroll casing (4) has two side walls (13) opposed to each other, a curved peripheral wall (12a, 12b), and a tongue (9) continuous with the curved peripheral wall (12a, 12b). The scroll casing (4) also has an intake opening defined in one of the two opposed side walls (13) and a discharge opening (8) delimited by the two side walls (13), the curved peripheral wall (12a, 12b), and the tongue (9). The curved peripheral wall (12a, 12b) has a first peripheral wall (12a) continuous with the tongue (9) and a second peripheral wall (12b) formed on a downstream side of the first peripheral wall (12a) with respect to the direction of travel of air so as to be continuous with the first peripheral wall (12a). The first peripheral wall (12a) is concentric with the multiblade fan (3) and has a constant radius of curvature, while the second peripheral wall (12b) has an expansion angle such that a distance (L) between a center (11) of the multiblade fan (3) and the second peripheral wall (12b) increases towards the discharge opening (8).
IPC 8 full level
F04D 29/44 (2006.01)
CPC (source: EP)
F04D 29/4226 (2013.01); F04D 29/441 (2013.01); F04D 29/602 (2013.01); F05D 2250/52 (2013.01)
Designated contracting state (EPC)
ES FR IT
DOCDB simple family (publication)
EP 1703138 A2 20060920; EP 1703138 A3 20100324; JP 2006233835 A 20060907
DOCDB simple family (application)
EP 06003542 A 20060222; JP 2005048370 A 20050224