| 摘要 |
<p>A heat cooking oven for heating the atmosphere in a heating chamber (5) by an electric heater to a high temperature for cooking food. The electric heater has a heating element (1) in a container (3) and the lead part (11) of a lead wire (2) as sealed at the container in such a manner that the lead part (11) is disposed within the chamber (5) and is projected out of the chamber (5). Since the element (1) is sealed in the container (3), it can be prevented from oxidizing and can heat at high temperature, thereby accelerating the cooking speed. Since the sealed lead part (11) is cooled by the outer atmosphere and retained at a low temperature, this invention can prevent damage to the lead wire due to the difference of thermal expansion coefficients between the container (3) and the lead wire (2) and can prolong its lifetime.</p> |
