Patent ID: 11946696
Assignee: ILLINOIS TOOL WORKS INC.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 0:
1. An end barrier box for blocking ambient gases from entering a hearth of a reflow oven, comprising:
a box body, wherein the box body comprises a bottom, the bottom has a mounting bottom plate, the box body forms a top opening, the box body further comprises a pair of side walls, and the side walls are oppositely disposed; and
a plurality of deflectors, wherein each of the plurality of deflectors is mounted between the pair of side walls, each of the plurality of deflectors comprises at least three fins, and the at least three fins are mounted on the mounting bottom plate and extend upward from the mounting bottom plate, wherein adjacent ones of the plurality of deflectors are spaced apart to form gas flow passages,
wherein the mounting bottom plate comprises a plurality of holes to allow fluid communication between the gas flow passages and a space between the mounting bottom plate and the bottom of the box body.