公开(公告)号：US20200001386A1

公开(公告)日：2020-01-02

申请号：US16275218

申请日：2019-02-13

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： NAOSHI YAMAGUCHI ,  TOSHIRO KANDA ,  YASUYUKI TAKANO ,  KOICHI NAGAI

IPC: B23K3/08 ,  B23K1/008 ,  H05K3/34

Abstract: A reflow furnace that can reduce both the flux clinging defect in a circuit board, and the thermal cracking defect in an electronic component has a heat zone in which a circuit board with a mounted electronic component is heated, and a cooling zone in which the heated circuit board is cooled, and includes: a shield disposed between the heat zone and the cooling zone and having an opening for passage of the circuit board; and a tunnel-like cover physically coupled to the opening and extending along a transport direction of the circuit board.

公开(公告)号：US20220203471A1

公开(公告)日：2022-06-30

申请号：US17543640

申请日：2021-12-06

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YOSHIKI MATSUMOTO ,  NAOSHI YAMAGUCHI ,  TOSHIRO KANDA ,  YASUYUKI TAKANO

IPC: B23K1/018 ,  B03C3/013 ,  B03C3/38 ,  B03C3/36 ,  H01T19/04

Abstract: A product removing method of introducing an atmospheric gas into a product remover including a corona discharge space to remove a product from the atmospheric gas, the product being generated inside a processing chamber under a low oxygen atmosphere, the method including: mixing the atmospheric gas with a high electric resistance gas to generate a mixed gas in a pipe or the corona discharge space, the pipe being connected between the processing chamber and the corona discharge space, the atmospheric gas being discharged from the processing chamber via the pipe, the high electric resistance gas having an electric resistance higher than an electric resistance of the atmospheric gas; and removing the product from the mixed gas by a corona discharge method in the corona discharge space into which the mixed gas is introduced via the pipe or in which the mixed gas is generated.

公开(公告)号：US20190388991A1

公开(公告)日：2019-12-26

申请号：US16274126

申请日：2019-02-12

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： NAOSHI YAMAGUCHI ,  KOICHI NAGAI ,  YASUYUKI TAKANO ,  TOSHIRO KANDA

IPC: B23K3/08 ,  B23K1/012 ,  B01D47/06 ,  B03C3/41

Abstract: A method and an apparatus for collecting flux in a way that improves the cleanliness inside a furnace by improving flux collection efficiency, reduces flux viscosity to maintain a liquid state even at ordinary temperature, and makes the flux collection unit more easily serviceable includes a rosin particle contained in an atmosphere gas, and vapor of a solvent or an atomized solvent particle are mixed in a mixing section provided upstream of a flux collection unit-side inlet, and a gas containing a mixed particle is cleaned by means of electrostatic precipitation. The solvent particle adheres to the rosin particle, and forms an aggregate of large particle size that can be more easily charged by corona discharge. This improves the flux collection rate of electrostatic precipitation collection, and, because the rosin particle dissolves in the solvent particle, the collected flux can have reduced viscosity.