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

Claim 0:
1. A soldering apparatus comprising:
a cooling zone configured to cool a board subjected to a soldering process;
an upper vent hole provided above a pair of rails configured to transport the board in the cooling zone;
a lower vent hole provided below the pair of rails in the cooling zone;
an external channel that connects the upper and lower vent holes with each other outside the cooling zone;
a blower unit that is communicated with the upper vent hole, and configured to cause gas in the external channel to flow through the upper vent hole, the cooling zone, and the lower vent hole in order and return to the external channel;
a heat exchanger provided in a lower opening linked to the lower vent hole below the pair of rails, and configured to cool gas passing through the lower opening;
a pair of bypass channels provided in parallel to the pair of rails on lateral sides of the pair of rails, and configured to draw in gas above the pair of rails through inlet ports, discharge the gas through discharge ports while bypassing locations of the pair of rails, and thereby deliver the gas to the lower opening; and
a ventilation plate provided in a space formed between the pair of bypass channels below the pair of rails, and provided with a slit used to send gas below the pair of rails to the lower opening.