EP 0153452 B1 19871125 - AXIAL BLOWER
Title (en)
AXIAL BLOWER
Publication
Application
Priority
DE 3403674 A 19840203
Abstract (en)
[origin: EP0153452A1] 1. Axial flow fan with a fan wheel (2) having holes through which adjustable-pitch blades (4) are passed and which are sealed by sealing rings (15, 16, 17, 27, 28), the root (11) of each blade (4) being connected by screws (12) to a shaft (5) arranged inside the fan wheel, characterized in that the screws (12) are passed from the fan wheel inside through a flange (14) of shaft (5) into the root (11) of blade (4), that the sealing rings (15, 16, 17, 27, 28) are prestressed radially to the fan wheel (2) by resilient elements and pressed against a sliding face (21) at the root (11) of blade (4) located perpendicular to the line of force of the resilient elements and that the prestress deflection of the resilient elements is greater than the displacement caused by centrifugal forces in the area of the sealing rings (15, 16, 17, 27, 28).
IPC 1-7
IPC 8 full level
F04D 29/08 (2006.01); F04D 29/32 (2006.01); F04D 29/36 (2006.01)
CPC (source: EP)
F04D 29/08 (2013.01); F04D 29/362 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0153452 A1 19850904; EP 0153452 B1 19871125; AT E31106 T1 19871215; CA 1282752 C 19910409; DE 3403674 C1 19850605; DE 3467796 D1 19880107; ES 540017 A0 19870401; ES 8704593 A1 19870401; JP S6134399 A 19860218; MX 161116 A 19900731; ZA 849876 B 19851224
DOCDB simple family (application)
EP 84113344 A 19841106; AT 84113344 T 19841106; CA 473453 A 19850201; DE 3403674 A 19840203; DE 3467796 T 19841106; ES 540017 A 19850131; JP 25389084 A 19841130; MX 20419485 A 19850131; ZA 849876 A 19841219