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    • 6. 发明申请
    • REFLOW OVEN
    • US20210176867A1
    • 2021-06-10
    • US17115426
    • 2020-12-08
    • ILLINOIS TOOL WORKS INC.
    • Yuexin CHENDong ZHANG
    • H05K3/34F27B9/40B23K1/008B23K3/047
    • The present disclosure discloses a reflow oven for processing a circuit board, the reflow oven comprising a heating zone, a plurality of heating devices and a start-stop device. The heating zone comprises a plurality of heating sub-zones, the plurality of heating devices are arranged in corresponding heating sub-zones of the plurality of heating sub-zones, and each of the plurality of heating devices is configured such that a working temperature of the corresponding heating sub-zone is in a predetermined temperature interval. The start-stop device is configured to activate or deactivate the plurality of heating devices, and the start-stop device is configured in such a way that the start-stop device activates or deactivates the plurality of heating devices according to predetermined time intervals in a process during which the circuit board sequentially passes through the plurality of heating sub-zones, such that a working temperature of each of the plurality of heating sub-zones is in a corresponding predetermined temperature interval. The reflow oven according to the present disclosure can perform soldering and processing of large-sized circuit boards and prevent the occurrence of overheating in a hearth of the reflow oven.