EP 1063479 A2 20001227 - Ventilating system
Title (en)
Ventilating system
Title (de)
Belüftungssystem
Title (fr)
Système de ventilation
Publication
Application
Priority
JP 17769399 A 19990624
Abstract (en)
A ventilating system is proposed which comprises an air passage communicating between an outdoor side and an indoor side. In order to prevent noise entering from the outdoor side and sound escaping from the indoor side and to prevent outdoor air invading at wind speed over a specific value, a part of the air passage is defined by a hexagonal frame main body whose cross section is reduced gradually from outdoor side to indoor side. Further, it is provided a sound deadening member which is a hexagonal sound absorbing cone member comprising an outside sound deadening portion which is a first hexagonal cone whose apex is directed to the outdoor side and an inside sound deadening portion which is a second hexagonal cone whose apex is directed to the indoor side, so that the cross section of the air passage is reduced gradually from the apex of the first hexagonal cone to a bottom surface portion thereof and increased gradually from the bottom surface portion thereof to the apex of the second hexagonal cone. Furthermore, an opening and shutting mechanism is provided in the air passage to close the air passage when wind speed of the outdoor side exceeds a specific value. <IMAGE>
IPC 1-7
IPC 8 full level
E04B 1/70 (2006.01); E04F 17/04 (2006.01); F24F 7/00 (2006.01); F24F 7/04 (2006.01); F24F 11/047 (2006.01); F24F 11/75 (2018.01); F24F 13/24 (2006.01)
CPC (source: EP US)
F24F 11/75 (2017.12 - EP); F24F 13/24 (2013.01 - EP US); F24F 2007/0025 (2021.01 - EP US)
Citation (applicant)
Designated contracting state (EPC)
SE
DOCDB simple family (publication)
EP 1063479 A2 20001227; EP 1063479 A3 20020522; EP 1063479 B1 20041013; CA 2300441 A1 20001224; JP 2001003552 A 20010109; JP 3522158 B2 20040426
DOCDB simple family (application)
EP 00105253 A 20000314; CA 2300441 A 20000310; JP 17769399 A 19990624