| 摘要 |
A heating appliance such as a hot-air circulating microwave oven using a shape memory alloy as the damper spring for driving the damper unit. The damper lid a capable of switching the direction of air to be supplied into the heating chamber and the damper spring, made of shape memory alloy drives the damper lid in the air path inside a duct, delivering air cooled by a cooling fan to both the heating chamber and a magnetron.
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