| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive and space-saving hot air circulating type oven easily installable even in any place such as a laboratory in which a facility for supplying cooling water does not exist. SOLUTION: Silicon packing (a seal member) 8 is arranged in a frame shape inside a throat door 3 for contacting with a contact surface 2a arranged on the furnace body 2 side when closing a throat A to seal the inside of a furnace body 2. A frame-shaped part (a cooling air duct) 10b of an air pipe (a cooling means) is arranged on the reverse side of the contact surface 2a, and outside air from a blower (a cooling means) 9 is introduced as cooling air to cool the contact surface 2a and the silicon packing 8. COPYRIGHT: (C)2004,JPO
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