US 6,982,401 B2
Microwave oven
Jin Yul Hu, Seoul (Korea, Republic of); Kwong Yong Kim, Seoul (Korea, Republic of); Won Hui Lee, Seoul (Korea, Republic of); and Eung Su Kim, Seoul (Korea, Republic of)
Assigned to LG Electronics Inc., Seoul (Korea, Republic of)
Filed on Aug. 13, 2004, as Appl. No. 10/917,365.
Claims priority of application No. 10-2004-0011018 (KR), filed on Feb. 19, 2004.
Prior Publication US 2005/0184067 A1, Aug. 25, 2005
Int. Cl. H05B 6/72 (2006.01); H05B 6/74 (2006.01)
U.S. Cl. 219—746 10 Claims
OG exemplary drawing
 
1. A microwave oven comprising:
a cavity for placing food therein;
a magnetron for generating a microwave;
a waveguide having at least two slots for guiding the microwave from the magnetron into the cavity, the at least two slots being formed near peak points of intensity of a magnetic field in the waveguide, respectively, an interval of approximately λg/2 being between two adjacent slots of the at least two slots, λg denoting a wavelength of the microwave in the waveguide; and
a stirrer fan rotatably mounted on one side of the cavity for varying an interfered state of the microwaves, periodically, the stirrer fan having a rotation shaft located near a peak point of intensity of an electric field in the waveguide, the rotation shaft of the stirrer fan having a distance of approximately λg/4 to a closest slot of the at least two slots.