EP 1594152 A3 20061108 - Magnetron for microwave oven.
Title (en)
Magnetron for microwave oven.
Title (de)
Magnetron für Mikrowellenherd
Title (fr)
Magnétron pour four à micro-ondes
Publication
Application
Priority
JP 2004069109 A 20040311
Abstract (en)
[origin: EP1594152A2] A magnetron for microwave oven can suppress undesirable noises, especially the sixth harmonic and the seventh harmonic. <??>The magnetron for microwave oven having an oscillating frequency of 2450 MHz band comprises: a cathode 12 placed inside an anode cylinder 11; a plurality of vanes 13 arranged radially toward the cathode 12 from an inner wall of the anode cylinder 11; a pair of first strap rings 14a connecting alternately every other vane at top ends and bottom ends of the plurality of vanes 14; a pair of second strap rings 14b placed inside the first strap rings 14a and connecting alternately every other vane at top ends and bottom ends of the plurality of vanes, wherein an inner diameter of the second strap ring 14b is 1.45 times to 1.53 times as large as a distance between inner ends of two vanes 13 placed on a diameter of the anode cylinder 11. <IMAGE>
IPC 8 full level
H01J 23/20 (2006.01); H01J 23/22 (2006.01); H01J 23/10 (2006.01); H01J 23/54 (2006.01); H01J 25/50 (2006.01); H01J 25/587 (2006.01)
CPC (source: EP KR)
H01J 23/16 (2013.01 - KR); H01J 23/22 (2013.01 - EP KR); H01J 23/54 (2013.01 - KR); H01J 25/587 (2013.01 - EP KR)
Citation (search report)
- [A] US 4720659 A 19880119 - AIGA MASAYUKI [JP], et al
- [PA] EP 1441378 A2 20040728 - LG ELECTRONICS INC [KR]
- [A] EP 1391908 A2 20040225 - SAMSUNG ELECTRONICS CO LTD [KR]
- [A] EP 1316984 A2 20030604 - MATSUSHITA ELECTRIC IND CO LTD [JP]
- [A] JP 2000077004 A 20000314 - SANYO ELECTRIC CO
- [A] JP H08153472 A 19960611 - TOSHIBA CORP
- [A] JP H06223730 A 19940812 - MATSUSHITA ELECTRONICS CORP
- [A] GB 2243018 A 19911016 - SANYO ELECTRIC CO [JP]
- [A] EP 0327116 A1 19890809 - SANYO ELECTRIC CO [JP]
- [A] EP 0263491 A2 19880413 - TOSHIBA KK [JP] & JP S61281435 A 19861211 - SANYO ELECTRIC CO
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR LV MK YU
DOCDB simple family (publication)
EP 1594152 A2 20051109; EP 1594152 A3 20061108; CN 1677609 A 20051005; JP 2005259508 A 20050922; KR 20060043802 A 20060515
DOCDB simple family (application)
EP 05290528 A 20050309; CN 200510071748 A 20050311; JP 2004069109 A 20040311; KR 20050019866 A 20050310