EP 3553320 A4 20200722 - PROPELLER FAN
Title (en)
PROPELLER FAN
Title (de)
PROPELLERLÜFTER
Title (fr)
VENTILATEUR HÉLICOÏDAL
Publication
Application
Priority
- JP 2016255373 A 20161228
- JP 2017080267 A 20170414
- JP 2017044226 W 20171208
Abstract (en)
[origin: EP3553320A1] In a blade (20) of a propeller fan (10), a position on a chord line (31) where the camber becomes maximum is set as a maximum camber position A, and a ratio of a distance d between a leading edge (23) and the maximum camber position A to a chord length c is set as a maximum camber position ratio (d/c). The end portion on the hub side of the blade (20) is set as a blade root, and the end portion on the outer circumferential side of the blade (20) is set as a blade end. In the blade (20), the maximum camber position ratio (d/c) monotonically increases in the direction from the reference blade cross section located between the blade root and the blade end toward the blade end and becomes maximum at the blade end. Thus, fan efficiency of the propeller fan is improved.
IPC 8 full level
F04D 29/00 (2006.01); F04D 29/38 (2006.01)
CPC (source: EP US)
F04D 29/00 (2013.01 - EP); F04D 29/38 (2013.01 - EP); F04D 29/384 (2013.01 - EP US); F04D 29/667 (2013.01 - US)
Citation (search report)
- [XY] JP 2010275986 A 20101209 - MITSUBISHI ELECTRIC CORP
- [Y] JP 2012052443 A 20120315 - DAIKIN IND LTD
- [A] JP 2005307788 A 20051104 - MITSUBISHI ELECTRIC CORP
- [A] CN 102341603 A 20120201 - MITSUBISHI ELECTRIC CORP
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3553320 A1 20191016; EP 3553320 A4 20200722; EP 3553320 B1 20230913; CN 110036209 A 20190719; CN 110036209 B 20201120; JP 2018109393 A 20180712; JP 2018112196 A 20180719; JP 6414268 B2 20181031; JP 6544463 B2 20190717
DOCDB simple family (application)
EP 17888019 A 20171208; CN 201780075312 A 20171208; JP 2017080267 A 20170414; JP 2018085437 A 20180426