EP 0785362 A1 19970723 - Cross flow fan impeller
Title (en)
Cross flow fan impeller
Title (de)
Laufrad für Querstromlüfter
Title (fr)
Roue pour une soufflante à courant traversal
Publication
Application
Priority
JP 644796 A 19960118
Abstract (en)
To reduce its rotational noise in a particular frequency band, the cross flow fan impeller (4) comprises a plurality of division plates (3) perpendicular to the rotational axis and a plurality of blades (1) provided between each pair of division plates (3). The angular location (θk) of the blades is varied cyclically based on a specific equation. <IMAGE>
IPC 1-7
IPC 8 full level
F04D 17/04 (2006.01); F04D 29/28 (2006.01); F04D 29/30 (2006.01); F04D 29/66 (2006.01)
CPC (source: EP KR)
F04D 17/04 (2013.01 - EP KR); F04D 29/283 (2013.01 - EP); F04D 29/666 (2013.01 - EP)
Citation (applicant)
JP S6017296 A 19850129 - MATSUSHITA ELECTRIC IND CO LTD
Citation (search report)
- [XY] US 5266007 A 19931130 - BUSHNELL PETER R [US], et al
- [Y] DE 2322734 A1 19741121 - BUDERUS EISENWERK
- [A] DE 4421604 C1 19950413 - SIEMENS AG [DE]
- [AD] US 4538963 A 19850903 - SUGIO TAKASHI [JP], et al
- [A] R.C. MELLIN: "Controlling the Tonal Characteristics of the AerodynamicNoise Generated by Fan Rotors.", TRANSACTIONS A.S.M.E; JOURNAL OF ENGINEERING FOR BASIC ENGINEERING., vol. 92d, no. 1, March 1970 (1970-03-01), pages 143 - 154, XP002030072
Designated contracting state (EPC)
BE DE ES FR GB IT
DOCDB simple family (publication)
EP 0785362 A1 19970723; EP 0785362 B1 20021211; AU 680173 B1 19970717; CN 1076448 C 20011219; CN 1164619 A 19971112; DE 69625322 D1 20030123; DE 69625322 T2 20031016; ES 2191080 T3 20030901; HK 1000496 A1 20030425; JP 3484854 B2 20040106; JP H09195979 A 19970729; KR 100216104 B1 19990816; KR 970059509 A 19970812
DOCDB simple family (application)
EP 96307582 A 19961018; AU 7055796 A 19961101; CN 97102053 A 19970115; DE 69625322 T 19961018; ES 96307582 T 19961018; HK 97101945 A 19971017; JP 644796 A 19960118; KR 19970000872 A 19970114