Patent ID: 6909079

Claim:
A microwave oven, comprising: an outer case forming a top and sides of a cabinet; a base plate forming a bottom of the cabinet; a front panel and a rear panel mounted in a front part and a rear part of the base plate for forming a front surface and a rear surface, respectively; an inner case forming a cooking chamber on the base plate; first and second transformers mounted at corners of one side of the base plate; a fan positioned above the second transformer for drawing external air into the inner case via the first and second transformers; a fan motor connected to the fan for providing a driving power to the fan; a fan housing for protecting the fan; an air duct positioned at least partially between the first and second transformers so that the air duct is at least partially interposed between the transformers, the air duct having one end in communication with the fan housing and the other end branched to form first and second branch ducts; and first and second magnetrons positioned on an outside surface of the inner case, wherein the first and second magnetrons are connected to the first and second branch ducts, respectively.