| 摘要 |
PURPOSE:To reduce a cost by reducing the volume of a body, by a method wherein cooling structure is formed such that two magnetrons, two high voltage transformers, one centrifugal fan, and one propeller fan are arranged to the one side of a heating chamber. CONSTITUTION:Cold air sucked through a suction port 15 with the aid of a centrifugal fan cools a high voltage transformer 9, and is sucked in a centrifugal fan 7. Since cold air exhausted from the centrifugal fan 7 passes an air guide 8 and independently cools magnetrons 5 and 6, it passes exhaust guides 11 and 12 and is exhausted by means of exhaust ports 13 and 14 formed in the back of a body. Another high voltage transformer 10 is situated in a position in the vicinity of an exhaust port 14b formed at the lower part of the back of the body. A part of cold air sucked with the aid of the centrifugal fan 7 is discharged against the high voltage transformer 10 by means of a propeller fen 17 and a fan heater 18, and after the high voltage fan 10 is cooled thereby, the cold air is exhausted through the exhaust port 14b to the outside of the body. This constitution enables all source perts to be situated to the one side of a heating chamber, resulting in reduction of the volume of the body.
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