Patent ID: 6466440
Filing Date: 2002-10-15
Classification: B23K,F27D,H05K

Abstract:
A circuit board cooling apparatus for use with a solder bath disposed close to the apparatus and a circuit board to which electronic parts are soldered, comprising:a cooling compartment having an open top and a bottom with a plurality of openings for taking in cooling air, the cooling compartment defining one end that is close to the solder bath and an opposite end that is opposite to the one end, the circuit board to which the electronic parts are soldered being transported in a transporting direction over the open top of the cooling compartment from the one end of the cooling compartment toward the opposite end of the cooling compartment, soldered portions on the circuit board being cooled by the cooling air taken in through the openings of the cooling compartment and flowing from the bottom of the cooling compartment toward the open top of the cooling compartment with inclination towards the transporting direction of the circuit board; at least one plane rectifier plate disposed above the openings of the cooling compartment in parallel with the circuit board, the at least one plane rectifier plate having a plurality of holes, and adapted to rectify the cooling air; a plurality of inclined rectifier plates defining distal ends and being disposed on the at least one plane rectifier plate in a plurality of lines in the transporting direction of the circuit board, the plurality of inclined rectifier plates being inclined at a given angle in the transporting direction, and adapted to rectify the cooling air from the plane rectifier plate; and a plurality of air guide plates defining distal ends and being made of a heat-resistant flexible material, the plurality of air guide plates being disposed on the distal ends of the inclined rectifier plates at intervals in the transporting direction, and allowing the distal ends of the plurality of air guide plates to reach the circuit board.