| 摘要 |
<p>An apparatus (11) for rotatably supporting a temperature probe (7) incorporated in an oven which employs a turntable (5), the temperature probe (7) being adapted to sense the temperature of the object being heated. To prevent any leakage of microwaves and enable the extraction of a stable electric output, the rotatable support apparatus (11) retains a plug (10) of the temperature probe (7) by four or more contactors (24) provided on resilient contact pieces (25), and any inclination of the plug (1) during rotation is limited by the inner surface of a sleeve portion (30). The contact portions are made of metal, and one of the contact portions is formed by employing a soft, electrically conductive material impregnated with a vegetable oil. In addition, to prevent any increase in the contact resistance and any drop in the insulation resistance owing to contamination or condensation, a vapor hole (36) is provided at the top of a body (26) of the support apparatus (11), to form a passage for the escape of vapor. To prevent the vapor which has passed through the vapor hole (36) striking against a casing (18) and condensing thereon, a heat-transfer plate (38) is provided immediately above the support apparatus (11). Alternatively, a conical condensation plate (39) can be provided to prevent water droplets falling on the support apparatus (11) and into an oven chamber (1).</p> |
