Electromagnetically shielded inductor assembly

摘要

An openable induction coil is provided. An electromagnetically shielded inductor assembly can be formed from the openable induction coil and an electromagnetically shielded enclosure into which the coil can be inserted. The induction coil can be pivoted open while in the shielding enclosure without complete disassembly of the enclosure. In some examples of the invention, a dynamic “curtain” of a gas is injected through spaces between opening portions of the coil and adjacent sections of the shielding enclosure, and into the interior of the induction furnace formed by the openable induction coil when it is in the closed position.

主权项

1. An electromagnetically shielded inductor assembly comprising:
an openable box-like induction coil forming at least one single turn coil when in a closed position to form an induction furnace in an interior furnace volume of the induction furnace with an entry perimeter and an exit perimeter, the openable box-like induction coil having a pair of pivot connections to allow a pivot opening of at least two opposing moveable sides of the openable box-like induction coil, an opposing longitudinal ends of the at least two opposing moveable sides of the openable box-like induction coil respectively forming the entry perimeter and the exit perimeter, the openable box-like induction coil having at least one pair of electric power terminal connections; a box-like electromagnetically shielded enclosure surrounding the openable box-like induction coil, the box-like electromagnetically shielded enclosure having a separate movable side section facing each of the at least two opposing moveable sides of the openable box-like induction coil to allow the pivot opening of the at least two opposing moveable sides of the openable box-like induction coil at least partially through an installed plane of each of the separate moveable side sections of the box-like electromagnetically shielded enclosure when the separate moveable side sections of the box-like electromagnetically shielded enclosure are at least partially removed from the installed planes of the separate moveable side sections; a workpiece entry passage and a workpiece exit passage within the box-like electromagnetically shielded enclosure, the workpiece entry passage and the workpiece exit passage respectively disposed at the opposing longitudinal ends of the openable box-like induction coil, the workpiece entry passage, the workpiece exit passage and the interior furnace volume of the induction furnace forming a path for a workpiece through the box-like electromagnetically shielded enclosure; and at least one gap in a region respectively between the entry and exit perimeters of the at least two opposing moveable sides of the openable box-like induction coil and an inner perimeter of the workpiece entry passage and the workpiece exit passage.