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    • 2. 发明申请
    • HEATING FURNACE
    • US20210254894A1
    • 2021-08-19
    • US17275876
    • 2019-04-11
    • NIPPON STEEL TEXENG. CO., LTD.
    • Shinjiro KUWAYAMATetsuya IRIE
    • F27D11/02F27B17/00
    • This heating furnace includes a housing having a pair of side walls, a workpiece support material configured to support a workpiece having a flat plate shape in a horizontal posture between the pair of side walls, a planar heater configured to heat the workpiece supported by the workpiece support material from above or below, a power feeding device configured to feed power to the planar heater, and a heater support material configured to support the planar heater in a horizontal posture. The planar heater has a plurality of heating bodies disposed side by side in a conveyance direction and in a left-right direction orthogonal to the conveyance direction in a plan view, the plurality of heating bodies each have a heating wire and a sintered body configured to accommodate the heating wire, include two or more kinds of heating bodies having different dimensions or shapes, and include an intermediate heating body alongside which other heating bodies are disposed at both end portions in the left-right direction, and the power feeding device has a feeding unit configured to feed power to each of the heating bodies from the side wall.
    • 3. 发明申请
    • REFLOW FURNACE
    • US20210180867A1
    • 2021-06-17
    • US17115435
    • 2020-12-08
    • ILLINOIS TOOL WORKS INC.
    • Yuwei WANGYuexin CHEN
    • F27D21/04F27B9/30F27D11/02B23K1/008
    • The present disclosure discloses a reflow oven, comprising a heating zone, a cooling zone, a barrier and exhaust zone, a gas exhaust passage, a gas exhaust power device, and a detection device. The heating zone comprises a heating zone inlet and a heating zone outlet. The cooling zone comprises a cooling zone inlet and a cooling zone outlet. The barrier and exhaust zone is located between the heating zone outlet and the cooling zone inlet. An inlet of the gas exhaust passage is communicated with the barrier and exhaust zone. The gas exhaust power device is disposed on the gas exhaust passage. The detection device is disposed on the gas exhaust passage and used for detecting parameters of gas in the gas exhaust passage, wherein the parameters of the gas reflect a blockage condition of the gas exhaust power device. The reflow oven according to the present disclosure can ensure that the gas containing soldering flux is sufficiently drawn out from the barrier and exhaust zone, thereby ensuring the production quality of a circuit board and improving the qualified rate of the circuit board.