Patent ID: 11865645
Assignee: SENJU METAL INDUSTRY CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B  H | IPC B  H

Claim 4:
5. The soldering apparatus according to claim 1, wherein:
the upper vent hole is provided in a furnace side wall surface serving as a side wall surface of the cooling zone; and
the blower unit includes:
a blower fan provided on a furnace ceiling wall surface serving as a ceiling wall surface of the cooling zone;
a fan inlet zone extending from the upper vent hole to a wall surface facing the furnace side wall surface, and configured to cause gas to flow toward the blower fan from the upper vent hole; and
a fan outlet zone provided surrounding the fan inlet zone, and configured to cause gas to flow toward the cooling zone from the blower fan.